Epitalon vs Thymalin
Overview
Epitalon is primarily a anti-aging & longevity peptide, while Thymalin is used for immune support.
This page compares Epitalon and Thymalin 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
| Epitalon | Thymalin | |
|---|---|---|
| Category | Anti-aging & Longevity | Immune Support |
| Regulatory status (US) | Compounding (Rx) — Apr 2026 | Research use only |
| Typical dosage | 5-10 mg | 10 mg |
| Frequency | cycle | daily for 10-day cycles |
| Reported benefits | Telomere lengthening, improved sleep quality, enhanced longevity markers, circadian rhythm regulation | Thymus rejuvenation, immune enhancement, anti-aging immune support |
| Reported side effects | Very well-tolerated. Minimal side effects during cycles | Well-tolerated during cycles |
Key differences
Primary use. Epitalon is categorised under Anti-aging & Longevity, while Thymalin falls under Immune Support. Their differing categories mean they are usually chosen for different goals rather than as direct substitutes.
Regulatory status. Epitalon: not FDA-approved; compounding permitted with a prescription as of April 2026. Thymalin: not FDA-approved; treated as a research compound.
Dosing. Epitalon is typically dosed at 5-10 mg (cycle). Thymalin is typically dosed at 10 mg (daily for 10-day cycles).
Can you stack them?
Some protocols combine peptides, but stacking Epitalon and Thymalin 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 Epitalon and Thymalin?
- Epitalon is primarily a anti-aging & longevity peptide, while Thymalin is used for immune support. Epitalon is not FDA-approved; compounding permitted with a prescription (as of April 2026), whereas Thymalin is not FDA-approved; generally classified as a research compound.
- What is Epitalon used for?
- Longevity, telomere support.
- What is Thymalin used for?
- Thymus restoration peptide.
- Can you take Epitalon and Thymalin together?
- Some users combine peptides within a single protocol, but stacking Epitalon and Thymalin 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 Epitalon or Thymalin FDA-approved?
- Epitalon is not FDA-approved; compounding permitted with a prescription (as of April 2026). Thymalin is not FDA-approved; generally classified as a research compound.