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CognitivePreliminary grade

Dihexa

A potent synaptogenic compound in animals with zero human trials, and an HGF/c-Met mechanism that carries a real proliferation concern.

Verdict, D · Speculative

A mechanistically interesting compound with real preclinical signal but essentially no human evidence, and a c-Met/HGF mechanism that raises a legitimate proliferation question. Speculative, high caution, and not appropriate for casual experimentation.

Overview

Dihexa (N-hexanoic-Tyr-Ile-(6) aminohexanoic amide) is an angiotensin-IV-derived small molecule that acts as an HGF/c-Met potentiator, producing striking synaptogenesis in preclinical neurodegeneration models. The hype around it far outruns the data: there are no published human trials, so its efficacy and, critically, its long-term safety in people are unknown. The same HGF/c-Met pathway that drives synapse formation is also implicated in tumour growth, making the absence of human safety data a genuine, not theoretical, concern.

PepScore Breakdown, the four axes

Evidence

35% weight
17/100

How strong is the published human science?

Human data depth4/40
Regulatory & registry status2/30
Reproducibility & consistency6/20
Mechanism characterized in humans5/10

Sourcing & COA

30% weightOur moat
44/100

Can a buyer obtain an independently-verified, high-purity version?, our proprietary layer.

Independent + portal-verifiable testing15/35
Method transparency (HPLC + MS + endotoxin/sterility, methods stated)11/25
Lot-matched + recent11/25
Independent corroboration7/15

Safety & Risk

25% weight
45/100

What is the real-world harm potential?

Documented AEs / toxicity14/40
Contraindication breadth12/25
Regulatory warnings11/20
Therapeutic index / margin8/15

Practicality

10% weight
58/100

How easy is it to actually run a verified version?

Verified-source availability18/35
Cost / value per cycle15/25
Reconstitution & administration16/25
Storage & stability9/15

Sources & Citations

Every claim cites a primary source. Citations are machine-audited against NCBI, see methodology.

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PepScore36/100 · D
Last gradedJune 28, 2026
Next re-grade triggerFirst-in-human safety/pharmacokinetic data would be required to move this off Speculative.

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Educational only, not medical advice. PepScore is an educational research grade, not a prescription or dosing recommendation. Some vendor links are affiliate links, this never affects grades. Consult a licensed healthcare provider before using any compound.