How many units of Triptorelin should I draw?

It depends on your vial size, BAC water, and dose. For a 0.1mg vial with 1mL BAC water, a beginner dose of 100mcg is typically 100 units on a U-100 syringe. Use the calculator above for your exact numbers.

How much BAC water should I add to Triptorelin?

The standard amount is 1mL of bacteriostatic water for a 0.1mg vial. More water gives a more dilute solution, so the same dose fills more of the syringe and is easier to measure. Less water makes the draw smaller and harder to read. The number of doses per vial does not change either way, since that depends only on vial size and dose. Adjust the BAC water slider in the calculator to see how it changes your syringe units.

How long does a Triptorelin vial last?

At a beginner dose of 100mcg single dose, a 0.1mg vial lasts about 1 dose. The calculator shows exact doses per vial for your selected tier.

What syringe should I use for Triptorelin?

Most people use a 1mL U-100 insulin syringe (100 units). For very small doses, a 0.5mL or 0.3mL barrel is easier to read. All three are U-100 graduated, so the number of units to draw is the same on each. Veterinary U-40 syringes are a different scale and the calculator adjusts for that separately.

How should I store Triptorelin after reconstitution?

Store reconstituted Triptorelin at 2-8°C (36-46°F) recommended. Refrigerate at 2-8°C, use within 24 hours (single-use vial). Before reconstitution: room temperature up to 30 days, refrigerated up to 2 years.

How close is the 100 mcg PCT dose to the chemical castration dose?

The PCT dose is 0.1 mg; the monthly prostate cancer depot is 3,750 mg: a 37,500-fold difference. But the distinction isn't just dose size; it's duration of receptor occupancy. The single shot clears in hours. Depot formulations release drug continuously for months. A single dose of just 1 mg (1,000 mcg) sustained long enough can cause shutdown. The margin for error is narrow in absolute micrograms.

Not medical advice. Talk to your provider before using any peptide.

Full disclaimer

Peptide Schedule Research TeamReviewed Apr 20265 Citations

Triptorelin Dosage Calculator

Turns your vial size, BAC water, and dose into exact syringe units. Free, no signup.

Sexual HealthFDA ApprovedGrade B·~3-8 hours half-life·Injection

7 refsVerified 2026-04-07

Calculate your dose

Adjust vial, water, and dose — answer updates live

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Vial Size

BAC Water (mL)

Dose Tier

100mcg · Single dose

Custom Dose (mcg) optional

Syringe

All three take the same units for the same dose. A smaller barrel just spreads it over more space.

Draw to 100.0 units= 1.000 mL

on a U-100 syringe for a 100mcg dose

Concentration

100

mcg/mL

Doses / vial

Cost / dose

Your mixing recipe

Add 1 mL BAC water to your 0.1 mg vial. Draw to 100.0 units on a U-100 syringe for a 100mcg dose. This vial will last 1 dose.

Double-check with AI Triptorelin profile

Copy link saves these numbers in the address. Anyone who opens it sees the same draw.

Scheduling does not apply to Triptorelin

There is no repeating self-administered schedule to plan for it, so the protocol builder leaves it out. The calculator above still works out the draw. Read the Triptorelin profile

Scheduling does not apply to Triptorelin

There is no repeating self-administered schedule to plan for it, so the protocol builder leaves it out. The calculator above still works out the draw. Read the Triptorelin profile

Cycle Length (weeks)

Price Per Vial ($) — optional

Open Triptorelin details

Side effects, protocols by goal, storage, and the sources behind these dosing numbers.

About Triptorelin

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.

PCTHormonal RegulationGnRH AgonistFDA-Approved

NicheDozens2,453Moderate

Subcutaneous or Intramuscular. Typical beginner frequency: single dose.At beginner dose (100mcg) with a 0.1mg/1mL vial: draw to the 100-unit mark on a U-100 syringe.

After reconstituting, store at 2-8°C (36-46°F) recommended (refrigerate at 2-8°c, use within 24 hours (single-use vial)).

View side effects and safety warnings →

Quick-Start: Reconstitution

1Get baseline bloodwork before touching the vial: LH, FSH, total testosterone, free testosterone, estradiol. These values confirm you have hypogonadotropic hypogonadism (low LH/FSH) and that triptorelin is appropriate.
2Confirm all exogenous androgens have cleared your system. Wait at least 2 half-lives of the longest-acting ester you were running.
3Reconstitute the vial. For a 0.5 mg vial: add 5 mL bacteriostatic water slowly along the glass wall. Swirl gently. For a 1 mg vial: add 10 mL bacteriostatic water. Both give you 100 mcg per mL.

Full injection guide→

Need a different vial size? Open the universal Triptorelin reconstitution calculator to enter any vial mg + BAC water mL.

Triptorelin Dosing Protocol

Case ReportTriptorelin PCT protocol from Pirola et al. case report (PMID 20416868)

Level	Dose / Injection	Frequency
Beginner	100mcg	Single dose
Moderate	100mcg	Single dose
Aggressive	100mcg	Single dose

Note:

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 →

How the Triptorelin Math Works

0.1mg in 1mL: =0.1mg/mL
0.1mg/mL: =1mcg per unit
100mcg / 1: =100 units
0.1mg / 100mcg: =1 dose

Based on a 0.1mg vial, 1mL of bacteriostatic water, the beginner dose (100mcg), and a U-100 syringe. Change any input in the calculator and every line moves with it.

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Triptorelin Cost

Brand Price

Trelstar (triptorelin pamoate): FDA-approved US brand for prostate cancer only. 3.75 mg depot: ~$945/injection; 11.25 mg depot: ~$2,819/injection; 22.5 mg depot: ~$5,000+/injection. These are mg-range prostate cancer doses, not the 100 mcg PCT dose. No FDA-approved 100 mcg US product exists.

Generic / Research

Decapeptyl 0.1 mg/day SC (Ferring Pharmaceuticals): pharmaceutical-grade 100 mcg formulation available in Europe and other countries. NOT FDA-approved in US. ~$20/vial via international pharmacy (PharmacyChecker April 2026). Import required; regulatory status varies by country.

Compounded

No FDA-recognized compounding category for triptorelin PCT doses. Unregulated gray-market research peptide vendors: ~$47–$94 per 0.5 mg vial (April 2026). Users reconstitute and draw down to 100 mcg. No quality guarantee: high quality risk.

Pricing updated 2026-04-09

Prices are estimates and vary by source, location, and prescription status.Full pricing breakdown →