Dihexa
Also known as: N-hexanoic-Tyr-Ile-(6) aminohexanoic amide, PNB-0408
By GLPeptideSciences Editorial Team · How we evaluate evidence · Reviewed by Dr. George S. Watson, MD, Cardiothoracic Surgeon · Updated 2026-06-02
An angiotensin-IV-derived compound studied in preclinical models for unusually potent synapse-forming (synaptogenic) activity.
What it is & how it works
What it is
Dihexa is a small compound derived from angiotensin IV, studied for unusually potent synaptogenic activity — the formation of new synaptic connections — in lab models.
How it is thought to work
It’s associated with the hepatocyte growth factor / c-Met system, which is involved in synapse formation. The reported potency in preclinical models is what generated interest.
The evidence and the caveat
The catch is simple: this is almost entirely preclinical. Human data is effectively absent, and a compound that potently rewires synapses deserves caution precisely because its long-term effects in people are unknown.
What it's discussed & studied for
- Cognition and neuroplasticity (preclinical)
- Neuroprotection discussion
Discussion of a use is not a claim that it works or is approved.
Research status
Preclinical. Striking potency in animal/cell models drew attention, but there is essentially no human trial data. Not approved.
Evidence quality
Mechanistically notable but almost entirely preclinical. Confident human claims are not supported.
Dosing discussion
No human protocol exists; anything circulating is extrapolated from animal work.
Educational summary of what is discussed in the literature and community — not a dosing recommendation or medical advice.
Safety & harm reduction
Human safety is effectively uncharacterized. A compound that potently drives synapse formation warrants caution precisely because its long-term effects are unknown.
Sourcing literacy
No approved product; research-market material is unverified.
Selected literature
FAQ
Is there human evidence for Dihexa?
Essentially none. The attention comes from potent preclinical (animal and cell) results; it has not been validated in human trials.