Peptide library

Tesofensine

Human trialsWeight & metabolic

An oral triple reuptake inhibitor (dopamine, noradrenaline, serotonin), first tested for Parkinson’s and Alzheimer’s, that cut appetite strongly.

Not approved in the US or Europe; sold as a research chemical.

Used for

  • Weight loss
  • Appetite and cravings

How it works

Keeps more dopamine, noradrenaline and serotonin active in the brain, which lowers hunger and raises fullness; it quiets appetite-driving neurons in the hypothalamus in rats.

Half-life: about 9 days (steady levels take weeks)

What the research shows

  • Phase 2 (24 weeks, 203 people, with diet): weight fell 4.5% on 0.25 mg, 9.2% on 0.5 mg and 10.6% on 1 mg daily, vs 2.0% on placebo.
  • Heart rate rose about 7 beats a minute on 0.5 mg; the authors later published a correction for under-reported side effects.
  • In people, it lowered hunger and raised fullness in appetite studies.

Dosing

Dosing isn’t listed on the public site. In the app, each published option is shown with its source (a drug label, a clinical guideline, a trial or community reports) and can be turned into a protocol you review.

Work out the units to draw for your vial →

Side effects

  • Dry mouth
  • Insomnia (take it in the morning)
  • Nausea, constipation or diarrhea
  • Faster heart rate, higher blood pressure
  • Mood changes, anxiety

Cautions

  • Not with MAO inhibitors, SSRIs/SNRIs, stimulants or other serotonin drugs.
  • Watch resting heart rate and blood pressure; avoid with heart disease or uncontrolled blood pressure.
  • The long half-life means side effects linger for weeks after stopping.
  • Research-chemical vials have no quality control: purity, dose and sterility vary. Third-party testing helps but is no guarantee.

Storage

Unmixed powder: freezer or fridge, away from light.

Once mixed with bacteriostatic water: fridge; the common rule is to use it within 28 days.

There is no label or published stability data for this one, so treat these as habits, not limits.

Reference only, not medical advice. Written for this app from the cited research. Doses marked community-reported are not from trials.