Dihexa dose guide

Dihexa dosage

An experimental nootropic that increased new synaptic connections between neurons in rat studies from one lab. Its proposed mechanism, the HGF/MET growth-factor system, rests on a paper retracted in 2025 for fabricated data, and it has never been tested in humans. Commonly reported: sharper word-finding and verbal fluency within the first days, overstimulation or poor sleep at higher doses, and for many, little or no effect. It stays in the body for weeks (long half-life in rats). Very experimental — approach with caution.

Dose range

10–30 mg (research range). Studied in research — not a recommendation.

How often

Daily: Daily (cycle 4–8 weeks)

A typical run

4–8 week cycles maximum. It has a long half-life in rats (~12.7 days), so it stays in the body for weeks after the last dose.

How it’s taken

Taken by mouth: Oral, Topical (DMSO carrier)

Evidence

Emerging: Primarily preclinical / limited human data

Half-life

Very long (weeks) — accumulates

Dihexa on your syringe

Taken by mouth, so there’s nothing to draw.

Dihexa in the peptide libraryThe Dose Guide: every peptide

More cognitive peptides

• Selank 250–500 mcg
• Semax 200–900 mcg
• NSI-189 40–80 mg
• P21 100–300 mcg
• Cerebrolysin 5–10 mL
• N-Acetyl Semax Amidate 100–600 mcg
• Adamax No reference dose

A community reference, not medical advice. Each range is what has been studied or is commonly run, never a dose for you.