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Ketamine / Esketamine (Spravato)

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

💡 Did you know? Ketamine, an old anaesthetic, can lift severe depression in hours — not weeks — through a completely different mechanism than antidepressants.

In plain English

Rapidly regrows brain connections lost in depression — works in hours where SSRIs take weeks. Dissociative and controlled, used under supervision.

How it works

NMDA-receptor (GRIN) antagonist triggering a glutamate surge → rapid synaptogenesis via BDNF/mTOR — antidepressant within hours, not weeks. Esketamine is FDA-approved for treatment-resistant depression.

Molecular target & official sources

GRIN1 NMDA receptor (NCBI Gene) · Ketamine (PubChem CID 3821)

Bottom line

Breakthrough for resistant depression; clinic-administered.

Helps with: Stress & Anxiety

Stacks with

Shares a pathway — often paired with: Whey / Casein Protein, Rapamycin (Sirolimus), L-Theanine, Magnesium.

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 mTOR pathway →

Common questions

Does Ketamine / Esketamine (Spravato) actually work?

Human-evidence rating: 4 of 5. Breakthrough for resistant depression; clinic-administered.

Is Ketamine / Esketamine (Spravato) legal or approved?

Regulatory status: Prescription, Controlled.