This page shows what was measured, who it was measured in, and what that does not settle.
What Ropinirole does in the body
The signs and symptoms of idiopathic Parkinson’s disease
From the FDA-approved label: Ropinirole is a non-ergoline dopamine agonist. The precise mechanism of action of ropinirole as a treatment for Parkinson’s disease is unknown, although it is thought to be related to its ability to stimulate dopamine D 2 receptors within the caudate-putamen in the brain. The precise mechanism of action of ropinirole as a treatment for Restless Legs Syndrome is unknown, although it is thought to be related to its ability to stimulate dopamine receptors.
What happened in people
RNAWiki has not yet published a reviewed conclusion for this use.
§ A fixed RNAWiki sentence
Where this came from
Wording RNAWiki always uses, not a finding about this substance.
No reviewed claim names a result for any goal on this record.
No source is stored against this line.
The limit that matters most
Not recorded.
Where it acts
Not recorded.
Kind of result
No result is published, so no kind of result applies yet
Supervision
RNAWiki has not recorded a supervision or regulatory status for this substance.
What the registries record it as
Its recorded molecular formula is C16H24N2O•HCl, weighing 296.84.
US prescribing information · 5823b3a2-3256-4d94-97b4-ec6b940312f4 · read 2026-08-30
Where each sentence above came from
No recorded sentence describes the change this makes in a way that stands on its own. The page opens with what it is taken for instead, and the recorded explanation follows below.
Shown as the opening line on this page.
No statement of the main limit is recorded.
The four opening statements run to 98 words.
Words this page uses
Four words worth knowing first
Chosen from what this page shows, with each one explained before the word it depends on.
Biomarker
A biomarker is a number from a test that stands in for something about health.
A picture of it, and where the picture fails
A biomarker is like a fuel gauge.
Where that stops being true. A gauge is wired to the tank. Many biomarkers are only loosely tied to health.
What people get wrong. A better number is read as a better life. Several medicines improved a number and helped nobody.
A measurable indicator used as a substitute for a clinical outcome of interest.
Placebo
A placebo is a dummy treatment given so the real one can be compared with it.
A picture of it, and where the picture fails
A placebo is like a blank control in an experiment.
Where that stops being true. A blank does nothing. People given a placebo often do get better.
What people get wrong. A placebo effect is read as imaginary. The improvement is measured and real.
An inactive intervention matched in appearance to the test intervention, used to control for non-specific effects.
Comparator
A comparator is whatever the treatment was measured against.
A picture of it, and where the picture fails
It is like the other runner in a race.
Where that stops being true. A race has one winner. A study can show both arms improved.
What people get wrong. Results are read without asking what the other group got. Beating nothing is not beating a treatment.
The control condition against which the experimental intervention is assessed.
What happened in people◇Read from sources, not yet reviewed
What was measured, goal by goal
One row for each goal a registered study measured something for. One column for each kind of thing that could be measured.
Registered studies list 14 outcome measures that RNAWiki could read. A registered study says what someone planned to measure. It does not say what they found. 0 of the matched studies tested this substance, and 0 posted a result.
There is no single score. A strong test result and a weak life result are different facts.
Goals down the side, kinds of measurement across the top. Each cell says what kind of thing was registered, not what was found.
Goal
Life outcome
What a body can do
How a person feels
A test result
A step in the body
Harms
How long
Who was studied
Mood
∅Nothing in the sources checkedNo registered study lists a life outcome for this goal.
∅Nothing in the sources checkedNo registered study lists a performance measure for this goal.
…Waiting for a reviewer1 registered symptom measure.
∅Nothing in the sources checkedNo registered study lists a test result for this goal.
∅Nothing in the sources checkedNo registered study lists a body-step measure for this goal.
—Not recordedHarms were not a registered measure for this goal.
—Not recordedNo finished study window is recorded.
…Waiting for a reviewerWho was studied is listed further down the page.
Which registered measures put each goal on this table
Mood
hamilton depression rating scale
Sorted by fixed word lists, version v1. A name the rules do not recognise stays unsorted rather than moving to the nearest column.
What each mark on this table means
∅ Nothing in the sources checked
No registered study lists a life outcome for this goal.
… Waiting for a reviewer
1 registered symptom measure.
— Not recorded
Harms were not a registered measure for this goal.
What happened in people◇Read from sources, not yet reviewed
What happened in people
Each card is one study: the exact question it asked, who was in it, and whether it showed what it set out to show.
Evaluate the changes from baseline to W24 in motor symptoms (UPDRS Section III).
✗ The study did not show it
Who was studied
NCT00605683
How many people
679
Study design
Phase 3
Compared against
Not recorded for this study
Kind of result
A number that stands in for health
What was found
Result not recorded on this page
Repeated elsewhere
Unreplicated
What this does not prove. A study that did not show an effect does not show that no effect exists anywhere.
The limits of this study, and where it came from
Main limit. No limitation is recorded for this study.
How far it carries. This study is recorded from the curated record, not from the registry match.
Form and route. Oral
Interval reported. Not recorded in this summary
Written into the record, not signed off as a reviewed claim.
openFDA Drugs@FDA · a recorded source, not a stored snapshot
openFDA NDC Directory · a recorded source, not a stored snapshot
openFDA SPL label · a recorded source, not a stored snapshot
PubChem PUG-REST · a recorded source, not a stored snapshot
Change from baseline in UPDRS (Unified Parkinson's Disease Rating Scale) II + III total scores at end of maintenance, for sumanirole compared to placebo
✗ The study did not show it
Who was studied
NCT00036218
How many people
600
Study design
Phase 3
Compared against
Not recorded for this study
Kind of result
A number that stands in for health
What was found
Result not recorded on this page
Repeated elsewhere
Unreplicated
What this does not prove. A study that did not show an effect does not show that no effect exists anywhere.
The limits of this study, and where it came from
Main limit. No limitation is recorded for this study.
How far it carries. This study is recorded from the curated record, not from the registry match.
Form and route. Oral
Interval reported. Not recorded in this summary
Written into the record, not signed off as a reviewed claim.
openFDA Drugs@FDA · a recorded source, not a stored snapshot
openFDA NDC Directory · a recorded source, not a stored snapshot
openFDA SPL label · a recorded source, not a stored snapshot
PubChem PUG-REST · a recorded source, not a stored snapshot
To demonstrate the superior tolerability of ropinirole extended release compared to ropinirole immediate release in adult subjects with RLS requiring evening and night-time coverage of RLS symptoms
✗ The study did not show it
Who was studied
NCT00314860
How many people
568
Study design
Phase 3
Compared against
Not recorded for this study
Kind of result
A number that stands in for health
What was found
Result not recorded on this page
Repeated elsewhere
Unreplicated
What this does not prove. A study that did not show an effect does not show that no effect exists anywhere.
The limits of this study, and where it came from
Main limit. No limitation is recorded for this study.
How far it carries. This study is recorded from the curated record, not from the registry match.
Form and route. Oral
Interval reported. Not recorded in this summary
Written into the record, not signed off as a reviewed claim.
openFDA Drugs@FDA · a recorded source, not a stored snapshot
openFDA NDC Directory · a recorded source, not a stored snapshot
openFDA SPL label · a recorded source, not a stored snapshot
PubChem PUG-REST · a recorded source, not a stored snapshot
Incidence/severity of adverse events Changes in vital signs Labs ECG Assessment of augmentation and rebound (worsening of RLS symptoms).
✗ The study did not show it
Who was studied
NCT00355641
How many people
450
Study design
Phase 3
Compared against
Not recorded for this study
Kind of result
A number that stands in for health
What was found
Result not recorded on this page
Repeated elsewhere
Unreplicated
What this does not prove. A study that did not show an effect does not show that no effect exists anywhere.
The limits of this study, and where it came from
Main limit. No limitation is recorded for this study.
How far it carries. This study is recorded from the curated record, not from the registry match.
Form and route. Oral
Interval reported. Not recorded in this summary
Written into the record, not signed off as a reviewed claim.
openFDA Drugs@FDA · a recorded source, not a stored snapshot
openFDA NDC Directory · a recorded source, not a stored snapshot
openFDA SPL label · a recorded source, not a stored snapshot
PubChem PUG-REST · a recorded source, not a stored snapshot
Unified Parkinson's Disease Rating Score (UPDRS) Part 3 Sum Score
✗ The study did not show it
Who was studied
NCT01628926
How many people
420
Study design
Phase 3
Compared against
Not recorded for this study
Kind of result
A number that stands in for health
What was found
Result not recorded on this page
Repeated elsewhere
Unreplicated
What this does not prove. A study that did not show an effect does not show that no effect exists anywhere.
The limits of this study, and where it came from
Main limit. No limitation is recorded for this study.
How far it carries. This study is recorded from the curated record, not from the registry match.
Form and route. Oral
Interval reported. Not recorded in this summary
Written into the record, not signed off as a reviewed claim.
openFDA Drugs@FDA · a recorded source, not a stored snapshot
openFDA NDC Directory · a recorded source, not a stored snapshot
openFDA SPL label · a recorded source, not a stored snapshot
PubChem PUG-REST · a recorded source, not a stored snapshot
Number of Participants With the Indicated Number of Adverse Events (AEs) and Serious Adverse Events (SAEs)
✗ The study did not show it
Who was studied
NCT00632736
How many people
419
Study design
Phase 3
Compared against
Not recorded for this study
Kind of result
A number that stands in for health
What was found
Result not recorded on this page
Repeated elsewhere
Unreplicated
What this does not prove. A study that did not show an effect does not show that no effect exists anywhere.
The limits of this study, and where it came from
Main limit. No limitation is recorded for this study.
How far it carries. This study is recorded from the curated record, not from the registry match.
Form and route. Oral
Interval reported. Not recorded in this summary
Written into the record, not signed off as a reviewed claim.
openFDA Drugs@FDA · a recorded source, not a stored snapshot
openFDA NDC Directory · a recorded source, not a stored snapshot
openFDA SPL label · a recorded source, not a stored snapshot
PubChem PUG-REST · a recorded source, not a stored snapshot
What we know
RNAWiki holds 6 written-up human studies for this substance, each with the question it asked.
How we know it
Each card names the study, the number of people and what the study set out to measure.
What this does not prove
These summaries were written by a person and have not been signed off as reviewed claims.
Why it matters
A study that failed is as informative as one that worked, and both are here.
What we still do not know
No reviewed claim exists, so no exact population, effect size or interval is published yet.
What happened in people◇Read from sources, not yet reviewed
How close this is to real life
The top step is something a person would feel or care about. The bottom is a guess from software. Filled steps are where evidence exists for this substance.
□Living longer, or avoiding a major eventNo evidence recorded. Death, a heart attack, a stroke, a hospital stay.No registered study measures this.
■What a body can do day to dayEvidence recorded. Walking, dressing, breathing, recovering.1 registered measure of this kind.
■Measured performanceEvidence recorded. How much was lifted, how far was run, how fast.1 registered measure of this kind.
■Symptoms and quality of lifeEvidence recorded. Pain, tiredness, mood, sleep, as the person rated it.1 registered measure of this kind.
□A number that stands in for healthNo evidence recorded. Cholesterol, blood sugar, bone density. A stand-in, not the thing itself.No registered study measures this.
■A step measured inside a personEvidence recorded. Something measured in human tissue or human cells.A human record sits on the stored organism ladder.
□AnimalsNo evidence recorded. Mice, rats, dogs. Useful for ideas, not proof about people.No animal record is stored.
■Cells in a dishEvidence recorded. Cells or chemistry on a bench, far from a whole body.Stored mechanism abstracts describe steps measured in cells or tissue.
□A guess from softwareNo evidence recorded. Nobody measured it. RNAWiki never publishes one as a finding.RNAWiki stores no prediction for this record. Software can suggest a link. RNAWiki does not publish one as a finding.
Higher on these steps means closer to something a person would feel. It does not mean better done.
What it would be like to take◇Read from sources, not yet reviewed
Felt, measured, or meaningful
Three different things that get called the same word. Registered studies measured all three, and mixing them is how a blood test becomes a health claim.
Felt
Things a person could notice without a test.
hamilton depression rating scale
Measured
Things only a test, a scale or a device shows.
No registered study measured anything of this kind.
Meaningful
Things that change how a life goes, not only a number.
gait speed
A registered study says what someone planned to measure. It does not say what they found. A number moving is not the same as a life going better. The two are shown apart here.
Felt, but not shown to help. A person notices a change. No study showed it leads anywhere good.
Measured, but not felt. A number moves. The person notices nothing. Both can be true.
Measured, but not shown to matter. A number moves in the good direction. Nobody showed that lives went better.
Matters, but takes years. The result that counts may take longer than anyone would keep watching.
Names that fit none of the three (12)
expert panel overall assessment following 2 years on drug
international index of erectile function
bioequivalence
cmax
auc0 t
auc0 inf
any adverse event
profile of pharmacokinetics
area under curve
unified parkinson s disease rating part 3 sum
pharmacokinetic parameters
frequency of muscle cramps as assessed by survey
These are harms, study-process measures, or names the rules did not recognise. They are shown rather than dropped.
What it would be like to take◇Read from sources, not yet reviewed
How long anything takes
Nine different lengths of time that get confused with each other. None of them is worked out from another.
Before anything is noticed.RNAWiki does not store this separately, and never works it out from another figure on this page.
Before a test result moves.RNAWiki does not store this separately, and never works it out from another figure on this page.
Before performance moves.RNAWiki does not store this separately, and never works it out from another figure on this page.
How long the result was watched.No finished study window is recorded for a study that tested this substance.
How long people took it.How long people actually took it is not stored. The study window is not the same thing.
How long people were followed.Follow-up length is not stored separately. It is never read off the study window, which would be a different thing.
How fast the body clears it. 6 hours hours
Read from the label, which states: “Elimination The clearance of ropinirole after oral administration is 47 L/h and its elimination half-life is approximately 6 hours.”
How long effects linger.RNAWiki does not store this separately, and never works it out from another figure on this page.
Beyond the studies. Nothing is recorded about the long term.
The longest finished study sets the edge of what anyone measured.
A study window is not how long people took it, and neither is how long they were followed. Where RNAWiki holds only one of the three, it shows one.
What is missing or unclear◇Read from sources, not yet reviewed
Were people like you studied?
RNAWiki cannot tell whether a study fits you. It can show who was in it, and where the result stops carrying.
Who was studied
People similar to this profile were included.
& USAGE Parkinson’s Disease Ropinirole Tablets are indicated for the treatment of the signs and symptoms of idiopathic Parkinson’s disease. The effectiveness of Ropinirole Tablets were demonstrated in randomized, controlled trials in patients with early Parkinson’s disease who were not receiving concomitant L-dopa therapy as well as in patients with advanced disease on concomitant L-dopa (see CLINICAL PHARMACOLOGY:…
Who is missing from the studies
Which groups were under-represented in the studies has not been recorded for this substance. Pregnancy, breastfeeding, children, older adults, and people with liver or kidney conditions are commonly excluded from trials; nothing here says whether they were.
What the label states about particular groups
On pediatric, the label states: “Safety and effectiveness in pediatric patients have not been established.”
US prescribing information · 5823b3a2-3256-4d94-97b4-ec6b940312f4 · read 2026-08-30
On older people, the label states: “Dose adjustment is not necessary in elderly (65 years and older) patients, as the dose of ropinirole tablets is individually titrated to clinical therapeutic response and tolerability .”
US prescribing information · 5823b3a2-3256-4d94-97b4-ec6b940312f4 · read 2026-08-30
On people who are pregnant, the label states: “Risk Summary There are no adequate data on the developmental risk associated with the use of ropinirole tablets in pregnant women.”
US prescribing information · 5823b3a2-3256-4d94-97b4-ec6b940312f4 · read 2026-08-30
On people who are breastfeeding, the label states: “Risk Summary There are no data on the presence of ropinirole in human milk, the effects of ropinirole on the breastfed infant, or the effects of ropinirole on milk production.”
US prescribing information · 5823b3a2-3256-4d94-97b4-ec6b940312f4 · read 2026-08-30
On people with reduced liver function, the label states: “The pharmacokinetics of ropinirole have not been studied in patients with hepatic impairment.”
US prescribing information · 5823b3a2-3256-4d94-97b4-ec6b940312f4 · read 2026-08-30
On people with reduced kidney function, the label states: “No dose adjustment is necessary in patients with moderate renal impairment (creatinine clearance of 30 to 50 mL/min).”
US prescribing information · 5823b3a2-3256-4d94-97b4-ec6b940312f4 · read 2026-08-30
Where the result stopped carrying
This is a scope explorer, not a diagnosis engine.
It shows who was studied so you can see whether people similar to you were included.
RNAWiki cannot tell whether a study fits you. It can show who was in it.
What it would be like to take◇Read from sources, not yet reviewed
Why it might seem to do nothing
A real effect and a noticed effect are different things. These are the recorded reasons the two come apart.
It was studied for a different goal
The studies measured something else entirely.
On this record: Some registered studies measured things that match no goal on this page.
It was studied in different people
The people in the studies were not much like the reader.
On this record: Which groups were under-represented in the studies has not been recorded for this substance. Pregnancy, breastfeeding, children, older adults, and people with liver or kidney conditions are commonly excluded from trials; nothing here says whether they were.
The evidence may simply be wrong
Small early studies often do not hold up.
On this record: RNAWiki has not yet published a reviewed conclusion for this use.
Other reasons RNAWiki checked and found nothing for (10)
A different form was studied
The studied form is not the form on the shelf. Nothing in this record points to this reason.
There was nothing to correct
Where a level is already normal, topping it up may change nothing. Nothing in this record points to this reason.
Something else had to happen too
In the studies it was paired with training, a diet or another treatment. Nothing in this record points to this reason.
The change is too small to feel
A real change can still sit below what a person notices. Nothing in this record points to this reason.
Day-to-day swing hides it
Sleep, food, stress and time of day move most numbers more than this would. Nothing in this record points to this reason.
Not enough time yet
The studies ran longer than the person has waited. Nothing in this record points to this reason.
It was not taken as studied
Missed days change the result, and studies count them. Nothing in this record points to this reason.
Something else changed at the same time
Two changes at once cannot be told apart afterwards. Nothing in this record points to this reason.
The product may not be what it says
Contents of a sold product are not always what the label states. Nothing in this record points to this reason.
No recorded reason
RNAWiki has nothing stored that would explain it. Nothing in this record points to this reason.
None of these is a reason to take more. Taking more is not a step this page ever suggests.
What it would be like to take◇Read from sources, not yet reviewed
What taking it involves
The recorded facts about getting hold of it and using it. Nothing here is a suggestion about what you should do.
How it is supplied
Prescription only
❝ Quoted from a source
Where this came from
Copied from a source RNAWiki stored, with the source named.
Read from the recorded approval status.
No source is stored against this line.
Form and route
Oral
✎ Source-linked record
Where this came from
A person wrote this into the record with the study named beside it. No reviewer has signed it off.
The form and route recorded on this substance.
No source is stored against this line.
Who oversees it
RNAWiki has not recorded a supervision or regulatory status for this substance.
❝ Quoted from a source
Where this came from
Copied from a source RNAWiki stored, with the source named.
No register row and no identity class settled the question.
No source is stored against this line.
What is in the pack
Sold as tablet, extended release, tablet, tablet, film coated, tablet, film coated, extended release, given by the oral route.
✎ Source-linked record
Where this came from
A person wrote this into the record with the study named beside it. No reviewer has signed it off.
Recorded notes on how this is sold and what that means for what is in the pack.
No source is stored against this line.
Where it is registered
Regulatory records are listed in the technical disclosure at the foot of this page.
# Counted from records
Where this came from
A count of rows RNAWiki holds. It describes our records, not your body.
Register entries are stored per jurisdiction and shown with their dates.
No source is stored against this line.
Why people stop
Not recorded.
∅ Nothing recorded
Where this came from
RNAWiki holds nothing here and says so rather than guessing.
No record of why people stopped taking it is stored for this substance.
No source is stored against this line.
What it would be like to take∅Nothing found in the sources checked
What can go wrong
Sorted by where each line came from. A regulator's label and a report somebody sent in are not the same kind of fact.
∅Nothing found in the sources checked
No harm is recorded against this substance in the sources RNAWiki checked. Finding nothing is not the same as showing there is nothing.
The sources listed were searched and held nothing. That is not the same as nothing existing.
Reports sent to a regulator
These are reports people sent to a regulator. They do not show the medicine caused the reaction.
Nobody counted how many people took the medicine and reported nothing.
The same event can be reported more than once, and many reports are incomplete.
News coverage, lawsuits and new warnings change how often people report.
A count is not a rate and not a risk.
Ropinirole appears in spontaneous reports to regulators. Across the 10 most-reported reaction terms, 1877 reaction mentions were counted. One report can name several reactions.
open-targets-adr · recorded 2026-06-24 · a recorded source, not a stored snapshot
Over a long time. No completed tested study window is recorded, so long-term effects are not established by the registry record.
Groups the studies covered thinly. Which groups were under-represented in the studies has not been recorded for this substance. Pregnancy, breastfeeding, children, older adults, and people with liver or kidney conditions are commonly excluded from trials; nothing here says whether they were.
What is missing or unclear◇Read from sources, not yet reviewed
Does the exact form matter?
Evidence belongs to the exact thing that was tested. A different salt, a different mixture or a different preparation is a different question.
The form that was studied
Oral
✎ Source-linked record
Where this came from
A person wrote this into the record with the study named beside it. No reviewer has signed it off.
The form used in the studies cited on this page.
No source is stored against this line.
What is sold
Not recorded.
∅ Nothing recorded
Where this came from
RNAWiki holds nothing here and says so rather than guessing.
Nothing further is recorded about which forms are sold.
No source is stored against this line.
What is recorded as being sold
158 products list this as an active ingredient in the United States drug directory. 158 of them contain it and nothing else.
FDA National Drug Code directory · 72162-2602 · read 2026-08-29
They are sold as powder, tablet, extended release, tablet, film coated and tablet, film coated, extended release, taken oral.
FDA National Drug Code directory · 72162-2602 · read 2026-08-29
The regulator's established pharmacologic class for it is dopamine agonists [moa] and nonergot dopamine agonist [epc].
FDA National Drug Code directory · 72162-2602 · read 2026-08-29
59 published labels name it as an active ingredient. 59 of them describe this substance alone, which is where its own label text on this page comes from.
US prescribing information · 5823b3a2-3256-4d94-97b4-ec6b940312f4 · read 2026-08-29
Those labels are classed as human prescription drug.
US prescribing information · 5823b3a2-3256-4d94-97b4-ec6b940312f4 · read 2026-08-29
ropinirole hydrochloride is oral at 3 DOSAGE FORMS AND STRENGTHS Tablets: 0.25 mg, 0.5 mg, 1 mg, 2 mg, 3 mg, 4 mg, and 5 mg ( 3 ) • 0.25 mg: White color coated, round, biconvex tablets debossed with "595" on one side and "S" on the other side • 0.5 mg: Ye…, recorded as fda label in effect 2025-05-28 in the United States.
US prescribing information · 5823b3a2-3256-4d94-97b4-ec6b940312f4 · read 2026-08-30
Recorded price in US: 0.04302–0.08322 USD per one unit as the pricing file counts it — a tablet, capsule, patch or single item, across 49 priced products whose strengths and pack forms differ, as of 2026-08-26, paid by retail pharmacies buying the product, as surveyed by the Centers for Medicare & Medicaid Services. It is not a list price, an insurance price, or what anyone pays at a counter..
Recorded source · 2026-08-26 · read 2026-08-28
Evidence carries across two names for one substance. It does not carry across a salt, a mirror form or a mixture.
What it would be like to take◇Read from sources, not yet reviewed
What you could measure
This one is decided with a clinician, so this section holds questions to ask rather than a plan to run.
RNAWiki could not confidently classify this substance, so no self-experiment plan is offered.
Questions worth asking
Which of the trials of Ropinirole studied people like me?
What was measured, and for how long?
Was the result a laboratory value or a health outcome?
What would we watch for, and when would we stop?
Tracking can show whether something changed for you. It cannot show what caused it.
RNAWiki records evidence. It does not say whether this substance is right for you.
What is missing or unclear◇Read from sources, not yet reviewed
What nobody knows yet
Open questions, each with why it is open and what would close it.
Missing populations
Which groups were under-represented in the studies has not been recorded.
Why it matters. Recorded by the evidence model as a gap on this record.
What would answer it
A study that measures it, and a reviewer to sign it off.
Last checked 2026-09-04. Searched: The sources listed in the receipts at the foot of this page.
Missing long-term data
No completed tested study window is recorded.
Why it matters. Recorded by the evidence model as a gap on this record.
What would answer it
A study that measures it, and a reviewer to sign it off.
Last checked 2026-09-04. Searched: The sources listed in the receipts at the foot of this page.
No reviewed conclusion
RNAWiki has not yet published a reviewed conclusion for this use.
Why it matters. Recorded by the evidence model as a gap on this record.
What would answer it
A study that measures it, and a reviewer to sign it off.
Last checked 2026-09-04. Searched: The sources listed in the receipts at the foot of this page.
Missing interaction studies
No interaction was found in the registers checked. Not finding one is not the same as showing there is none.
Why it matters. Recorded by the evidence model as a gap on this record.
What would answer it
A study that measures it, and a reviewer to sign it off.
Last checked 2026-09-04. Searched: The sources listed in the receipts at the foot of this page.
Formulation uncertainty
Several salts, forms or products of Ropinirole are recorded. Results from one form may not transfer to another.
Why it matters. Recorded by the evidence model as a gap on this record.
What would answer it
A study that measures it, and a reviewer to sign it off.
Last checked 2026-09-04. Searched: The sources listed in the receipts at the foot of this page.
Mechanism not reviewed
No reviewed mechanism story exists for this substance.
Why it matters. Recorded by the evidence model as a gap on this record.
What would answer it
A study that measures it, and a reviewer to sign it off.
Last checked 2026-09-04. Searched: The sources listed in the receipts at the foot of this page.
What happened in people◇Read from sources, not yet reviewed
Check any of this yourself
Every line above traced back to the study it came from. This is the technical layer, and the vocabulary changes here.
◇Read from sources, not yet reviewed
No traced study record is stored for this substance.
Built from stored sources by fixed rules. No reviewer has signed it off.
How many documents were read
59 documents were read for this substance.
RNAWiki source record
59 of them state the same halfLife, and they agree.
RNAWiki source record
59 of them state the same volumeOfDistribution, and they agree.
RNAWiki source record
Checks this page had to pass
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How this medicine reached us
Kept near the foot of the page. A historical event moves up only when it changes something about this substance today.
What the approval register records
23 approved applications cover products containing this substance. The earliest was NDA020658, approved 19970919 to GLAXOSMITHKLINE LLC.
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5 questions this page could not answer
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Recorded evidence blocks (15)
Q1
What did Ropinirole's largest trial (755 people) and its longest (11 years) measure?
755 people in Ropinirole's largest registered study, 11 years in its longest registered window, measuring Ropinirole AUC (area under the plasma concentration-time curve) over the dosing interval Ropinirole maximum plasma concentration. ClinicalTrials.gov · 2026-09-01
10 phase1, 10 phase3, 8 phase2, 6 phase4, 3 na, 2 na or unstated; NCT02994719; 2027-07-07; no ageing endpoint recorded. Last human test completed 2024, NCT06468371.
Interpretation These counts include studies where Ropinirole was a comparison treatment, a background treatment or an exposure in an observational study, and the longest window may be a planned end date. Trial roles have not yet been classified for this record.
Show the evidence
phase1
10
phase3
10
phase2
8
phase4
6
na
3
na or unstated
2
1 more recorded row
Last recorded human testNCT06468371
2024-02-01
recorded 2026-09-01 · last checked 2026-09-04
Q2
Ropinirole was tested only in human — what did it show?
Interpretation Ropinirole AUC (area under the plasma concentration-time curve) over the dosing interval Ropinirole maximum plasma concentration — the recorded outcome words.
Show the evidence
humanNCT00419692
biomarker; Ropinirole AUC (area under the plasma concentration-time curve) over the dosing interval Ropinirole maximum plasma concentration; 37
recorded 2026-09-01 · last checked 2026-09-04
Q3
2 of Ropinirole's trials stopped: safety, accrual/recruitment?
Ropinirole's half-life is 6 hours — which schedules were studied?
6 hours, the half-life Ropinirole's label states. openfda-label · 4e6b070c-50a6-4742-af3c-59b45c45735e · 2026-08-30
bioavailability 45% %.
Show the evidence
half life
6 hours hours; Elimination The clearance of ropinirole after oral administration is 47 L/h and its elimination half-life is approximately 6 hours.
tmax
Food does not affect the extent of absorption of ropinirole, although its Tmax is increased by 2.5 hours and its Cmax is decreased by approximately 25% when the drug is taken with a high-fat meal.
bioavailability
45% %; In clinical trials, more than 88% of a radiolabeled dose was recovered in urine and the absolute bioavailability was 45% to 55%, indicating approximately 50% first-pass effect.
metabolism
Metabolism Ropinirole is extensively metabolized by the liver.
recorded 2026-08-30 · last checked 2026-09-04
Q6
Could one person measure Ropinirole's effect on expert panel overall assessment following 2 years on drug?
Expert panel overall assessment following 2 years on drug: measured in Ropinirole's trials.
expert panel overall assessment following 2 years on drug is the recorded endpoint.
Show the evidence
biomarkers
expert panel overall assessment following 2 years on drug; 2026-09-01
international index of erectile function; 2026-09-01
hamilton depression rating scale; 2026-09-01
bioequivalence; 2026-09-01
cmax; 2026-09-01
auc0 t; 2026-09-01
8 more recorded rows
biomarkers
auc0 inf; 2026-09-01
biomarkers
any adverse event; 2026-09-01
biomarkers
profile of pharmacokinetics; 2026-09-01
biomarkers
area under curve; 2026-09-01
biomarkers
unified parkinson s disease rating part 3 sum; 2026-09-01
biomarkers
pharmacokinetic parameters; 2026-09-01
biomarkers
gait speed; 2026-09-01
biomarkers
frequency of muscle cramps as assessed by survey; 2026-09-01
half life
2026-09-04; halfLife; hours; 6 hours; 2026-08-30
human trials at or under30
12
smallest human trial
3; NCT03708237; PHASE2; the smallest recorded human enrolment at or below 30; the registry states no direction of its result; TERMINATED
Q7
Which of any adverse event, area under curve and auc0 inf did Ropinirole's trials measure?
any adverse event, area under curve and auc0 inf lead 14 outcome terms across Ropinirole's trials. ClinicalTrials.gov · 2026-09-01
bioequivalence, cmax, auc0 t, auc0 inf, any adverse event and profile of pharmacokinetics follow.
Show the evidence
expert panel overall assessment following 2 years on drug
1
international index of erectile function
1
hamilton depression rating scale
1
bioequivalence
1
cmax
1
auc0 t
1
8 more recorded rows
auc0 inf
1
any adverse event
1
profile of pharmacokinetics
1
area under curve
1
unified parkinson s disease rating part 3 sum
1
pharmacokinetic parameters
1
gait speed
1
frequency of muscle cramps as assessed by survey
1
recorded 2026-09-01 · last checked 2026-09-04
Q8
What will the one ongoing trial of Ropinirole report, and when?
"Gait Analysis in Neurological Disease"; n 120; "Gait speed"; 2027-07-07
recorded 2026-09-01 · last checked 2026-09-04
Q9
Which running trial of Ropinirole could settle function?
NCT02994719 measures Gait speed, reading out 2027-07-07.
1 open trial; n 120; "Gait Analysis in Neurological Disease"
Show the evidence
TrialNCT02994719
"Gait Analysis in Neurological Disease"; n 120; "Gait speed"; 2027-07-07
Q10
Which 20 trials of Ropinirole posted no result?
Posted no result
20 of 20 completed trials
Registrations
NCT00036218, NCT00673088, NCT00674310, NCT00363857, NCT00381472 and NCT00256893, and 14 more
Completion dates
oldest 2003-04; newest 2024-02-01
Show the evidence
Trial
NCT00036218
2003-04
NCT00673088
2004-02
NCT00674310
2004-02
NCT00363857
2004-05
NCT00381472
2004-12
NCT00256893
2005-07
14 further recorded trials
NCT00225862
2005-12
NCT00419692
2006-12-12
NCT00221390
2007-05
NCT00460148
2007-08
NCT00334048
2007-09
NCT00314821
2008-03-17
NCT01712568
2008-10
NCT01714856
2008-11
NCT01627834
2009-11
NCT01627847
2009-11
NCT01435915
2010-08-05
NCT00605683
2012-03
NCT03806530
2022-07-19
NCT06468371
2024-02-01
Q11
At the median, Ropinirole's trials enrolled 48 people — anything larger?
Median enrolment
48
Largest enrolment
755
Registered trials counted
37
Q12
What do 1877 spontaneous reports say about Ropinirole — and not say?
These are reports people sent to a regulator. They do not show the medicine caused the reaction. Nobody counted how many people took the medicine and reported nothing. The same event can be reported more than once, and many reports are incomplete. News coverage, lawsuits and new warnings change how often people report. A count is not a rate and not a risk.
Ropinirole appears in spontaneous reports to regulators. Across the 10 most-reported reaction terms, 1877 reaction mentions were counted: hallucination 288; somnolence 254; pathological gambling 207; condition aggravated 185. open-targets-adr · CHEMBL1200411 · 2026-06-24
Show the evidence
hallucination
288
somnolence
254
pathological gambling
207
condition aggravated
185
hallucination, visual
175
insomnia
172
4 more recorded rows
dyskinesia
166
confusional state
161
parkinson's disease
135
obsessive-compulsive disorder
134
recorded 2026-06-24 · last checked 2026-09-04
Q13
Ropinirole and CYP1A2 and P-GLYCOPROTEIN: shared by which compounds?
CYP1A2 and P-GLYCOPROTEIN appear in Ropinirole's recorded interaction sentences, 4 in all. openfda-label+europepmc · 2026-08-30
Interpretation pharmacokinetics
Show the evidence
CYP1A2
pharmacokinetics
In vitro studies indicate that the major cytochrome P450 enzyme involved in the metabolism of ropinirole is CYP1A2, an enzyme known to be induced by smoking and omeprazole and inhibited by, for example, fluvoxamine, mexiletine, and the older fluoroquinolones such as ciprofloxacin and norfloxacin.
pharmacokinetics
Cigarette Smoking: Smoking is expected to increase the clearance of ropinirole since CYP1A2 is known to be induced by smoking.
pharmacokinetics
Ciprofloxacin: Coadministration of ciprofloxacin (500 mg twice daily), an inhibitor of CYP1A2, with ropinirole tablets (2 mg 3 times daily) increased ropinirole AUC by 84% on average and C max by 60% (n = 12 patients).
pharmacokinetics
Theophylline: Administration of theophylline (300 mg twice daily), a substrate of CYP1A2, did not alter the steady-state pharmacokinetics of ropinirole (2 mg 3 times daily) in 12 patients with Parkinson's disease.
recorded 2026-08-30 · last checked 2026-09-04
Q14
Was Ropinirole studied with exercise?
exercise is named in Ropinirole's label sentences: "The interventions studied included aerobic resistance exercise, gabapentin, ropinirole, levodopa, iron dextran, and vitamins C and E (individually and in combination).Aerobic resistance exercise showed a significant reduction in severity of RLS compared to no exercise (2 studies, 48 participants:…" openfda-label+europepmc · 2026-08-30
1 recorded statement; exercise
Show the evidence
exercise
The interventions studied included aerobic resistance exercise, gabapentin, ropinirole, levodopa, iron dextran, and vitamins C and E (individually and in combination).Aerobic resistance exercise showed a significant reduction in severity of RLS compared to no exercise (2 studies, 48 participants: MD -7.56, 95% CI -14.20 to -0.93; I<sup>2</sup> = 65%), and when compared to exercise with no…
recorded 2026-08-30 · last checked 2026-09-04
Q15
What is recorded about Ropinirole and mTOR?
"Furthermore, connectivity map–based analysis prioritized PI3K-Akt-mTOR inhibitors as candidates for reversing TDP-43 iMGL signatures, and ropinirole was found to modulate mTOR signaling." — where Ropinirole and mTOR appear together. Europe PMC · pathway abstract search · 2026-03-10
mTOR; PMID 29531524
Show the evidence
mTOR
"Furthermore, connectivity map–based analysis prioritized PI3K-Akt-mTOR inhibitors as candidates for reversing TDP-43 iMGL signatures, and ropinirole was found to modulate mTOR signaling."
"These converging lines of evidence support a mechanistic role for ropinirole in restoring microglial homeostasis via PI3K-mTOR pathway regulation."
PMID 29531524
"Ropinirole and pramipexole produced dose-dependent increases of dendritic arborization and soma size after 3 days of culture, effects antagonized by the selective D3R antagonists SB277011-A and S33084 and by the mTOR pathway kinase inhibitors LY294002 and rapamycin."
recorded 2026-03-10 · last checked 2026-09-04
Where it is registeredIdentifiers, relations and other names
ClinicalTrials.gov — US Government work · Europe PMC — metadata only, under the recorded legal gate · Open Targets 26.06 — CC0 · derived from this page's own recorded fields; no external licence · mixed register set; per-register licences in docs/specs/corpus-20k-sources.md · openFDA / DailyMed — US Government work
✗ required summary fields resolved: 5 required field(s) not terminal: Why people use it, Best-supported result, Most important common problem, Biggest unanswered question, Human evidence
✓ public claims reviewed: 0 reviewed claim(s); drafts are never rendered
✓ source coverage passed: 11 source rows
✓ no critical contamination: no quarantine open
✓ canonical metadata passed: slug and display name present
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This is a record of evidence. It is not medical advice, and it does not say this substance suits you. Nothing here says any substance on RNAWiki is appropriate for a child.