What is Dihexa used for in research?

Research on Dihexa has focused on: Enhances memory and learning capacity; Supports neuroplasticity and synaptic growth; Improves cognitive processing speed; Promotes neuroprotection against damage; Enhances NGF and BDNF signaling; Supports long-term potentiation; May improve attention and focus.

What is the typical dose of Dihexa?

Typical research doses are 50-100 mcg, administered 1x daily. Commonly timed: Morning or evening, consistent timing preferred. These are research figures only — not clinical recommendations.

What are the known side effects of Dihexa?

Side effects reported in research include: Headache (uncommon, mild); Dizziness or lightheadedness (uncommon, mild); Injection site irritation (uncommon, mild); Insomnia or sleep disturbance (uncommon, mild); Anxiety or restlessness (rare, mild); Nausea (rare, mild); Allergic reaction (rare, serious). Always consult a qualified professional before use.

How is Dihexa administered?

Dihexa is typically administered via Subcutaneous.

Can Dihexa be injected?

In the research literature, Dihexa is described with subcutaneous administration. This is research information only, not medical advice.

What is the evidence quality for Dihexa?

Dihexa carries an evidence grade of C. Grade C — supported by animal studies or in-vitro research.

Cognitive Enhancement / Subcutaneous

Dihexa

A hexapeptide that enhances neuroplasticity and cognitive function by modulating neurotrophic signaling pathways, particularly through NGF and BDNF mechanisms.

What is Dihexa used for? Research has focused on enhances memory and learning capacity; supports neuroplasticity and synaptic growth; improves cognitive processing speed.

Compare with other peptides studied forcognitive performance

Evidence grade CResearch only

Dihexa injection at a glance

Figures from the published research literature. Research use only.

Dose range: 50-100 mcg
Route: Subcutaneous

How often, when, and the dosing notes are in the dosing reference further down.

Work out your units in the free calculator

Research status

Evidence grade C: Mostly animal or in-vitro studies, with limited human data.
Research only: No regulatory approval in any major jurisdiction. Research use only.

Research compound

For research purposes only. Not approved for human use. Not medical advice.

Research areas

Enhances memory and learning capacity
Supports neuroplasticity and synaptic growth
Improves cognitive processing speed
Promotes neuroprotection against damage
Enhances NGF and BDNF signaling
Supports long-term potentiation
May improve attention and focus

Side effects

Effect	How often	Severity
HeadacheMay occur in early use; typically resolves within days. Ensure adequate hydration and consistent injection timing.	Uncommon	Mild
Dizziness or lightheadednessMore common at higher doses. Sit or lie down if experienced. May indicate need for dose reduction.	Uncommon	Mild
Injection site irritationRedness, mild itching, or small bruising at injection site. Rotate sites to minimize. Use proper injection technique and allow solution to reach room temperature.	Uncommon	Mild
Insomnia or sleep disturbanceMay occur if injected too close to bedtime. Consider morning injection if evening dosing causes sleep issues.	Uncommon	Mild
Anxiety or restlessnessReported rarely in preclinical studies. Discontinue and consult healthcare provider if persistent.	Rare	Mild
NauseaUncommon; may occur with higher doses. Take with food if tolerated, or reduce dose.	Rare	Mild
Allergic reactionSigns include rash, swelling, difficulty breathing, or anaphylaxis. Seek immediate medical attention. Discontinue use.	Rare	Serious

Dosing reference

Dose scale from the research

Starting: 50 mcg
Typical: 75 mcg
Upper end: 100 mcg

Dihexa dosing reference
Parameter	Value
Dose range	50-100 mcg
Frequency, timing and route are for members Sign up free Log in

Checked October 2026

Research disclaimer. Figures are drawn from published research literature and community logs. They are not clinical recommendations. Consult a qualified professional. Research use only.

Reconstitution guide

Do not use saline or bacteriostatic saline, use only bacteriostatic water for reconstitution
Do not shake the vial vigorously; gentle swirling prevents peptide degradation
Discard immediately if the solution appears cloudy, discolored, or contains visible particles
Use within 30 days of reconstitution when stored at 2-8°C
Do not freeze the reconstituted solution; freezing may denature the peptide
Use the PeptideVolt reconstitution calculator for your exact concentration

Worked example

With 5 mg in the vial, the water you add changes the draw. Mixed with 1 mL that is 5,000 mcg per mL, so on a U-100 syringe 50 mcg is 1 units and 100 mcg is 2 units. Mixed with 2 mL it is 2,500 mcg per mL, so 50 mcg is 2 units and 100 mcg is 4 units.

Work out your exact dose in the free peptide calculator

Molecular and pharmacological data

Dihexa is a hexapeptide that enhances cognitive function by modulating neurotrophic signaling pathways, particularly through increased NGF (nerve growth factor) and BDNF (brain-derived neurotrophic factor) expression. It acts as an AT4 receptor agonist, promoting neuroplasticity, synaptic growth, and long-term potentiation. These mechanisms support memory formation, learning capacity, and neuroprotection against various forms of neuronal damage.

Pathways and mechanism detail are for members

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Recent research

All results on PubMed

Source: PubMed / NCBI. Updated daily. Articles are listed for research reference only.

Research citations

4 sources

Gao X, et al. (2006). Dihexa: a novel dimeric compound cognition enhancer related to angiotensin IV. Journal of Pharmacology and Experimental Therapeutics. PMID: 16760353
Wright JW, et al. (2010). Angiotensin IV analogs as potential cognitive enhancing agents. Brain Research Reviews. PMID: 20060018
Stragier B, et al. (2008). AT4 receptor ligands: cardiovascular and neurological effects. Current Pharmaceutical Design. PMID: 18673169
Gao X, et al. (2004). Neuroprotective and neurorestorative properties of a novel cognitive enhancer. Pharmacology Biochemistry and Behavior. PMID: 15582519

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Dihexa in blends

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Research use only. All content on this page is provided for informational and educational purposes related to scientific research. Dihexa is not approved for human use by the FDA or any equivalent regulatory body. This is not medical advice. Do not use any substance discussed here for therapeutic, diagnostic, or preventative purposes. Consult a qualified healthcare professional before making any health-related decisions. The Peptide Volt does not endorse the use of any research chemicals. 18+ only.