Ephedrine (EC/ECA stack)

Evidence: ★★★★☆ · Status: Prescription, Controlled

In plain English

Flips your "fight or flight" system on a little, which curbs hunger and burns more calories. Effective but raises heart rate and blood pressure — restricted for that reason.

How it works

Non-selective adrenergic agonist and norepinephrine releaser (ADRB1/2/3); centrally suppresses appetite and peripherally raises thermogenesis. Synergistic with caffeine (which blocks the negative-feedback of adenosine and phosphodiesterase).

Molecular target & official sources

ADRB2 beta-2 adrenergic receptor (NCBI Gene) · Ephedrine (PubChem CID 9294)

Protocol

Classic ECA = 20 mg ephedrine + 200 mg caffeine + aspirin, 2–3×/day.

Watch out

Hypertension, arrhythmia, anxiety. Restricted/controlled in many places.

Bottom line

Genuinely works; cardiovascular risk got it pulled from most shelves.

Helps with: Lose Fat · Cardiovascular

Stacks with

Shares a pathway — often paired with: Caffeine, Semaglutide (Ozempic / Wegovy / Rybelsus), Tirzepatide (Mounjaro / Zepbound), Modafinil / Armodafinil.

Availability & where to buy

Controlled substance. A controlled substance in most countries — illegal to buy, sell or possess without authorisation (in Singapore: HSA / CNB). Education only.

How it works: the GPCR → cAMP pathway →

Compare Ephedrine (EC/ECA stack)

• Ephedrine (EC/ECA stack) vs Caffeine
• Ephedrine (EC/ECA stack) vs Semaglutide (Ozempic / Wegovy / Rybelsus)
• Ephedrine (EC/ECA stack) vs Tirzepatide (Mounjaro / Zepbound)
• Ephedrine (EC/ECA stack) vs Testosterone (TRT)
• Ephedrine (EC/ECA stack) vs Retatrutide
• Ephedrine (EC/ECA stack) vs Liraglutide (Saxenda / Victoza)
• Ephedrine (EC/ECA stack) vs Caffeine (thermogenic)
• Ephedrine (EC/ECA stack) vs Omega-3 (EPA/DHA)