What is Dihexa?
An introduction to dihexa, an experimental nootropic peptide studied for cognitive effects. Learn why claims should be viewed with extreme caution given the lack of human data.
What is Dihexa?
Dihexa (N-hexanoic-Tyr-Ile-(6) aminohexanoic amide) is a synthetic peptide derived from angiotensin IV. It was developed at Washington State University as a potential cognitive enhancer. It is not approved for human use and has never been tested in human clinical trials.
Key Facts
| Fact | Detail |
|---|---|
| FDA Approved | No |
| Human Trials | None |
| Administration | Oral (claimed), intranasal |
| Evidence Level | Preclinical only |
How Is It Supposed to Work?
Dihexa is designed to enhance the activity of hepatocyte growth factor (HGF) at its receptor (c-Met). This pathway is involved in:
- Neuronal growth and survival
- Synapse formation
- Brain plasticity
The compound is claimed to be orally active and able to cross the blood-brain barrier, though this has not been verified in humans.
Research Status
What Studies Show
- Animal studies (primarily rats) showed improved memory and learning
- Researchers reported it was more potent than BDNF in promoting synapse formation
- Studies used healthy and dementia-model animals
- All data is preclinical
Evidence Quality
The evidence is extremely preliminary:
- Only animal studies exist
- No human safety or efficacy data
- Research comes primarily from one lab
- No clinical development announced
Significant Concerns
HGF and Cancer
The HGF/c-Met pathway is frequently overactive in cancer cells. Compounds that enhance this pathway raise theoretical concerns about tumor growth. This is a major reason for caution.
Unknown Safety
- Never tested in humans
- Long-term effects completely unknown
- Dose-response in humans not established
- Theoretical cancer risk from mechanism
Important Warnings
- No human data exists—all claims extrapolate from animal studies
- Products sold online are entirely unregulated
- The HGF pathway has known cancer associations
- This is a highly experimental compound
This guide is for educational purposes only. Dihexa has never been tested in humans and is not approved for any use.
Sources & Citations
Disclaimer: This article is for educational purposes only and does not constitute medical advice. The information presented is based on current research but should not be used for diagnosis, treatment, or prevention of any disease. Always consult a qualified healthcare provider before making health decisions.