Cortexin vs Epithalon
Overview
Cortexin and Epithalon are both sleep & recovery peptides, but they differ in mechanism, dosing, and regulatory status.
This page compares Cortexin and Epithalon 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
| Cortexin | Epithalon | |
|---|---|---|
| Category | Sleep & Recovery | Sleep & Recovery |
| Regulatory status (US) | Research use only | Compounding (Rx) — Apr 2026 |
| Typical dosage | 10 mg | 5-10 mg |
| Frequency | evening | cycle protocol |
| Reported benefits | Enhanced sleep quality, neural recovery, stress reduction | Improved sleep quality, circadian rhythm regulation, anti-aging |
| Reported side effects | Generally well-tolerated | Minimal side effects during cycles |
Key differences
Primary use. Cortexin is categorised under Sleep & Recovery, while Epithalon falls under Sleep & Recovery. Because they target a similar goal, they are common alternatives to weigh against each other.
Regulatory status. Cortexin: not FDA-approved; treated as a research compound. Epithalon: not FDA-approved; compounding permitted with a prescription as of April 2026.
Dosing. Cortexin is typically dosed at 10 mg (evening). Epithalon is typically dosed at 5-10 mg (cycle protocol).
Can you stack them?
Some protocols combine peptides, but stacking Cortexin and Epithalon 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 Cortexin and Epithalon?
- Cortexin and Epithalon are both sleep & recovery peptides, but they differ in mechanism, dosing, and regulatory status. Cortexin is not FDA-approved; generally classified as a research compound, whereas Epithalon is not FDA-approved; compounding permitted with a prescription (as of April 2026).
- What is Cortexin used for?
- Neuropeptide for rest.
- What is Epithalon used for?
- Circadian rhythm regulator.
- Can you take Cortexin and Epithalon together?
- Some users combine peptides within a single protocol, but stacking Cortexin and Epithalon 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 Cortexin or Epithalon FDA-approved?
- Cortexin is not FDA-approved; generally classified as a research compound. Epithalon is not FDA-approved; compounding permitted with a prescription (as of April 2026).