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Epitalon vs Thymalin

Updated 11 sources

Key differences

  1. 1Epitalon targets the pineal gland. Thymalin is a calf thymus extract aimed at immunity.
  2. 2Both are dosed at 5 to 10 mg a day; thymalin courses run 3 to 10 days. One guide stacks thymalin at 10 mg for 20 days, once or twice a year.
  3. 3In the same trial, thymalin went with 2.0 to 2.1-fold lower mortality against 1.6 to 1.8-fold for epithalamin.
  4. 4Thymalin is a thymus extract aimed at immune function; epitalon is a synthetic four amino acid peptide modelled on a pineal extract.
  5. 5Both come from the same Russian research group and are usually run together.

Side by side

Facts from each record, in the same words as their own pages.
Epitalon and Thymalin side by side
EpitalonThymalin
Category
  • Longevity, Sleep
  • Immune, Longevity
Evidence
  • Limited human data
  • Limited human data
FDA status
  • Not FDA approvedRegulatory
  • Not FDA approvedRegulatory
WADA
  • Not confirmed
  • Not confirmed
Half-life
  • Not established. A 2026 review says absorption, clearance and terminal half-life remain undefined in humans.Clinical study
Not reported
Routes
  • Subcutaneous injection, Oral, Intramuscular injection, Other route
  • Intramuscular injection, Subcutaneous injection
Forms
  • Vial (powder), Capsule, Nasal spray, Oral solution
  • Vial (powder)
Reported doses
  • 0.5 to 10 mg (subcutaneous injection)
  • 0.5 to 10 mg (oral)
  • 100 to 1,000 mcg (subcutaneous injection)
  • 5 to 20 mg (intramuscular injection)
  • 5 to 10 mg (subcutaneous injection)
Most cited frequency
  • Once daily in the evening
  • Once daily
Vial sizes
  • 10 mg, 50 mg, 100 mgCompetitor guide
  • 10 mg, 15 mg, 20 mgRegulatory
Mixed vial keeps
  • Fridge at 2 to 8 C, never frozen, no freeze-thaw.Competitor guide
  • Label and one guide: dissolve right before the injection and do not keep the mixed solution.Competitor guide
Protocols on file
  • 23
  • 10

Doses shown are what sources report, labelled by origin. Not medical advice.

Read each in full

Sources

11 sources, each checked by date. Record updated Oct 24, 2026. Numbers are restated in our own words and labelled by where they came from.

Competitor guide3

  1. Epithalon vs thymalinpeptidedeck.com · checked Oct 23, 2026
  2. Epithalon dosage guidebodyhackguide.co · checked Oct 23, 2026
  3. Thymalin profilepeptideprotocolwiki.com · checked Oct 24, 2026

Community-reported1

  1. Thymalin community protocols and reportspeptideprotocolwiki.com, via a competitor guide · checked Oct 24, 2026