# Dihexa

> Dihexa is a synthetic small molecule derived from angiotensin IV, designed to mimic and amplify neurotrophic activity through the hepatocyte growth factor (HGF)/c-Met signaling pathway. It has attracted research interest for its reported potency in promoting synapse formation at very low doses in preclinical models, positioning it as a candidate for cognitive and neurodegenerative research rather than an established therapeutic. Human clinical data are essentially absent, with almost all available evidence coming from cell culture and animal studies. Original research characterized it as active via non-injectable routes in animal models, though it is supplied and discussed here as an injectable research compound. Given the early stage of research, claims about cognitive benefit in humans should be treated with substantial caution.

- URL: https://www.lifeconverted.com/peptides/dihexa
- Primary category: Cognitive & Neuro
- Effectiveness rank: #5 in Cognitive & Neuro
- Evidence level: Emerging research
- Route: Subcutaneous (Some early research examined oral and transdermal delivery; this profile reflects subcutaneous injection, consistent with standard research administration on this site.)
- Dose range: 5-20 mcg
- Dose tiers: low 5 mcg; moderate 10 mcg; high 20 mcg
- Half-life: Specific human pharmacokinetic data are not available; animal studies suggest activity at very low systemic exposure, but a defined half-life has not been established in humans.
- Timing: Morning
- Cycle: 3-4 weeks on, 4 or more weeks off (No validated cycling protocol exists; any schedule discussed in research or vendor contexts is speculative given the near-absence of human trial data.)
- Storage: Store lyophilized peptide frozen or refrigerated prior to reconstitution, protected from light; refrigerate reconstituted solution and use within a few weeks.

## Mechanism of action

Dihexa is proposed to potentiate HGF/c-Met signaling, a pathway involved in synaptogenesis and neuronal survival during development and in response to injury. By amplifying this pathway at concentrations far lower than HGF itself, it is theorized in animal models to promote formation of new synaptic connections relevant to learning and memory. The relevance and safety of chronically activating this growth-factor pathway in humans has not been established.

## Reported benefits

- Preclinical models report potent effects on synapse formation at very low doses
- Explored as a research tool for models of cognitive impairment
- Investigated for potential neuroregenerative activity after neuronal injury in animal studies
- Proposed as a candidate compound for neurodegenerative disease research

## Reported side effects

- Human safety data are essentially unavailable
- Theoretical concern regarding unchecked growth-factor pathway activation
- Injection site irritation with subcutaneous use
- Unknown long-term risk profile given its potency at low doses

## Common protocols

- Very low-dose daily research use for short periods, as discussed in community and vendor sources rather than clinical literature

## Stacking notes

Sometimes mentioned alongside other neurotrophic-focused peptides in research discussions; no data exist on interactions or combined effects.

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