Peptide Schedule Research TeamReviewed Apr 20265 Citations
Adjust vial, water, and dose — answer updates live
on a U-100 syringe for a 100mcg dose
Never miss a dose — 100mcg single dose, draw 100.0 units on U-100 syringe.
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Triptorelin triggers an acute LH/FSH surge at a single 100 mcg dose, restarting testosterone production after steroid-induced suppression. FDA-approved at higher doses for prostate cancer (Trelstar), its PCT use rests on one landmark case report and strong community experience data.
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| Level | Dose / Injection | Frequency |
|---|---|---|
| Beginner | 100mcg | Single dose |
| Moderate | 100mcg | Single dose |
| Aggressive | 100mcg | Single dose |
The reconstitution math matters more here than with any other peptide. Getting it wrong by 10x is the difference between PCT and chemical castration. Slow down and verify. For a 0.5 mg vial: add 5 mL bacteriostatic water. Each 1 mL drawn equals 100 mcg. That full 1 mL is your entire PCT dose. For a 1 mg vial: add 10 mL bacteriostatic water. Same result, 100 mcg per mL; draw exactly 1 mL. On a U-100 insulin syringe, that is 100 units (a full syringe). You'll want to triple-check the vial label before reconstituting. A 0.5 mg vial looks almost identical to a 1 mg vial from some research vendors. If you add only 1 mL of water to a 0.5 mg vial and draw the whole thing, you've just injected 500 mcg. That is 5x the target dose. Don't split the dose. Don't save any for later. Don't repeat it. If testosterone hasn't recovered by week 6, the answer is an endocrinologist, not a second shot. Request a third-party certificate of analysis from any research vendor. Pharmaceutical-grade Decapeptyl from an international pharmacy is preferable if you can source it.
Dosing based on Triptorelin PCT protocol from Pirola et al. case report (PMID 20416868) — 7 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 →