Not medical advice. Talk to your provider before using any peptide.
Full disclaimerPeptide Schedule Research TeamReviewed Apr 20268 Citations
Thymulin (FTS)9 residues (approx.)QAKSQGGSNEach bubble = one amino acid. Size = residue mass. Color = chemical class.Uses closest standard amino acids for non-standard residues.Thymulin is a zinc-dependent nonapeptide thymic hormone with strong animal data for T-cell maturation and NF-kB-mediated anti-inflammatory effects. Only one human trial exists (Bordigoni 1982). Research compound used in short intensive courses with mandatory zinc co-supplementation to restore immune function.
50mcg · 2x/week
Summary: Add 2mL BAC water to your 1mg vial. Draw to 10.0 units on a U-100 syringe for a 50mcg dose. This vial will last 20 doses.
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| Level | Dose / Injection | Frequency |
|---|---|---|
| Beginner | 50mcg | 2x/week |
| Moderate | 100mcg | 3x/week |
| Aggressive | 200mcg | Daily |
Thymulin won't do anything without zinc on board. Start 15 to 30 mg elemental zinc daily at least 7 days before your first injection. Zinc citrate or bisglycinate absorb better and cause less stomach upset than zinc oxide. Reconstitution math for a 5 mg vial: add 2.5 mL bacteriostatic water to get 2 mg per mL. For the beginner 2 mg dose, draw 1 mL (100 units on a U-100 insulin syringe). For a 5 mg intermediate dose, reconstitute a 5 mg vial with 1 mL BAC water to get 5 mg per mL; draw 1 mL (100 units). The single biggest mistake in this space is confusing thymulin with thymalin. Thymulin is one defined 9-amino-acid peptide, MW 858.9 Da. Thymalin is a heterogeneous polypeptide extract from calf thymus. They are structurally different compounds with different evidence bases. Always verify the COA confirms molecular weight of 858.9 Da before your first dose. The 10-minute serum half-life means daily dosing is non-negotiable. Protocols using 2 to 3 times per week are almost certainly subtherapeutic. Short intensive courses (10 to 20 days) make more pharmacokinetic sense than stretched-out weekly schedules.
Dosing based on Community dosing consensus from peptide research communities — 14 published references.View all sources →
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Pricing updated 2026-04-09
Prices are estimates and vary by source, location, and prescription status.Full pricing breakdown →
Disclaimer: This curve is a simplified first-order exponential decay model. Actual pharmacokinetics vary based on injection site, individual metabolism, body composition, and other factors. Half-life values are approximate and based on available preclinical and clinical literature. Many research peptides lack formal human pharmacokinetic studies. This is for educational purposes only — not medical advice.
Thymulin is a zinc-dependent nonapeptide thymic hormone with strong animal data for T-cell maturation and NF-kB-mediated anti-inflammatory effects. Only one human trial exists (Bordigoni 1982). Research compound used in short intensive courses with mandatory zinc co-supplementation to restore immune function.
