Dihexa.
Million times more potent than BDNF. Extremely experimental. A small synthetic peptide studied in rodents for prompting nerve cells to form new connections. What it does in people is unknown, because no human study has been published.
Reviewed March 2026
- Category
- Nootropic
- Also filed under
- MemoryNeuroplasticityExperimental
What Dihexa is, and what it does.
- Does it work
- Very early research. Impressive preclinical data. No human trials.
- How much to take
- 5mg to 10mg a day is the band people work from. No human trial has set a dose for it, so that figure comes from practice rather than published human research.
- Time to feel it
- Nobody has measured this in people. Animal work reports changes in synapse formation over days to weeks, which is a laboratory measure and not a human timeline.
- The first dose
- No first day has been measured in people. What circulates is user report rather than data, and the animal work tracks synapse changes across days rather than hours.
- With regular use
- No study has followed anyone taking it for weeks, so the long-term picture is genuinely unknown. What exists is rodent work on synapse formation and memory tasks.
- How well tolerated
- Research chemical. No long-term safety data. Unknown risks.
- How it feels
- Strong cognitive effects reported. Memory, focus, learning speed.
- The overlooked benefit
- It was built as an angiotensin IV analogue and works through hepatocyte growth factor signalling, a different pathway from the BDNF comparison it is usually sold on.
5 to 10mg a day is where Dihexa works.
Source: McCoy et al., J Pharmacol Exp Ther, 2013
The proof, claim by claim.
These words describe the research, not the molecule's worth. Research strength is how much work stands behind one claim, and it is never a product score.
Based on 0 human trials.
- Synapse formation in nerve cell modelsIn vitro study
- Spatial memory performance in rodent modelsAnimal study
- Hepatocyte growth factor and c-Met receptor signallingIn vitro study
- Any outcome in peopleNarrative review
Questions people ask about Dihexa.
- When should I take it?
- Timing matters less than consistency. Pick a time that works for you and take it daily.
- Can I take it with other supplements?
- Usually fine. The main thing to watch is not doubling up on the same ingredient from different products. If you're on prescription meds, check with your pharmacist first.
- Any side effects to watch for?
- Most people tolerate it well at recommended doses. GI upset is the most common complaint with any supplement. Start with a lower dose and work up. If something feels off, stop and reassess.
- Who benefits most from this?
- Honestly, most people would benefit more from the basics. But if you've got a specific reason to try it, the risk is generally low.
No pairing data for Dihexa yet.
Nothing on file for Dihexa, either from a combination trial or from settled biochemistry. When either lands, it appears here with its source.
Stitching two separate single-ingredient studies into a pairing is the one thing this engine will not do. When a study of the combination itself holds up at source, it lands here with its citation.
No invented synergy. Where actives were studied on their own rather than together, the record shows each on its own evidence, never a combined effect no trial measured.
Research strength. Research strength says how much work stands behind the combination. It is never a product score.
Independent record. Every finding is cited to a named trial, dated, and never written by the brand.
21 pairings are live across the library today. Checked 9 August 2026.
Nothing specific on file for Dihexa. Match the label to the daily amount above, and tell your doctor what you take.
Not medical advice. Show the label to your pharmacist.Getting Dihexa from food.
The whole-food sources on file. A supplement closes the gap, it does not replace dinner.
A gram-for-gram figure (how much of each you would eat to match a dose) will appear here once it is sourced and reviewed. This page will not print a number it cannot cite.
FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. This information is for educational purposes only and is not intended to diagnose, treat, cure, or prevent any disease. Consult your healthcare provider before starting any supplement regimen.