Dihexa vs Selank
Overview
Dihexa and Selank are both cognitive enhancement peptides, but they differ in mechanism, dosing, and regulatory status.
This page compares Dihexa and Selank across their primary use, typical dosing, reported benefits and side effects, and U.S. regulatory status. For the full monograph on either compound — mechanism of action, clinical research, and references — follow the article links.
Side-by-side comparison
| Dihexa | Selank | |
|---|---|---|
| Category | Cognitive Enhancement | Cognitive Enhancement |
| Regulatory status (US) | Compounding (Rx) — Apr 2026 | Research use only |
| Typical dosage | Research protocols vary | 250-500 mcg |
| Frequency | research | daily |
| Reported benefits | Powerful cognitive enhancement, potential neuroregeneration, memory improvement | Anxiety reduction, improved focus, mood stabilization, immune modulation, stress management |
| Reported side effects | Research compound. Long-term effects unknown | Very well-tolerated. Rare: mild drowsiness |
Key differences
Primary use. Dihexa is categorised under Cognitive Enhancement, while Selank falls under Cognitive Enhancement. Because they target a similar goal, they are common alternatives to weigh against each other.
Regulatory status. Dihexa: not FDA-approved; compounding permitted with a prescription as of April 2026. Selank: not FDA-approved; treated as a research compound.
Dosing. Dihexa is typically dosed at Research protocols vary (research). Selank is typically dosed at 250-500 mcg (daily).
Can you stack them?
Some protocols combine peptides, but stacking Dihexa and Selank has not been validated for safety or efficacy in controlled trials. Combining compounds can change their effects and risks. Nothing here is medical advice — consult a qualified healthcare provider before starting or combining any protocol.
Frequently asked questions
- What is the difference between Dihexa and Selank?
- Dihexa and Selank are both cognitive enhancement peptides, but they differ in mechanism, dosing, and regulatory status. Dihexa is not FDA-approved; compounding permitted with a prescription (as of April 2026), whereas Selank is not FDA-approved; generally classified as a research compound.
- What is Dihexa used for?
- Potent cognitive enhancer.
- What is Selank used for?
- Anxiety reduction, focus.
- Can you take Dihexa and Selank together?
- Some users combine peptides within a single protocol, but stacking Dihexa and Selank has not been established as safe or effective in controlled trials. Neither this comparison nor PeptideSciences101 is medical advice — consult a qualified healthcare provider before combining any compounds.
- Is Dihexa or Selank FDA-approved?
- Dihexa is not FDA-approved; compounding permitted with a prescription (as of April 2026). Selank is not FDA-approved; generally classified as a research compound.