1Set Up Your Mix
13.333 mg/mL · 13333 mcg/mLYour Answer — Tirzepatide
20 mg in 1.5 mLThese are long-acting and reach steady state over weeks, so a single day’s timing has little effect. Consistency matters more than the hour.
2Week-By-Week Plan — Tirzepatide
Approved-label escalation| When | Dose | How Often | How Many mL | Draw To | Number Of Doses | Peptide Used |
|---|---|---|---|---|---|---|
| Weeks 1–4 | 2.5 mg | once weekly | 0.188 mL | 18.8 u | 4 | 10 mg |
| Weeks 5–8 | 5 mg | once weekly | 0.375 mL | 37.5 u | 4 | 20 mg |
| Weeks 9–12 | 7.5 mg | once weekly | 0.563 mL | 56.3 u | 4 | 30 mg |
| Weeks 13–16 | 10 mg | once weekly | 0.75 mL | 75 u | 4 | 40 mg |
| Weeks 17–20 | 12.5 mg | once weekly | 0.938 mL | 93.8 u | 4 | 50 mg |
| Week 21 onward per 4 weeks from here on |
15 mg | once weekly | 1.125 mL | 112.5 u ⚠ | 4 | 60 mg |
3Common Doses — Tirzepatide
worked out for your mix| Level | Dose | How Often | How Many mL | Draw To | Doses In Vial |
|---|---|---|---|---|---|
| Initiation (wk 1–4) | 2.5 mg | once weekly | 0.188 mL | 18.8 u | 8 doses |
| Step 2 | 5 mg | once weekly | 0.375 mL | 37.5 u | 4 doses |
| Step 3 | 7.5 mg | once weekly | 0.563 mL | 56.3 u | 2 doses |
| Step 4 | 10 mg | once weekly | 0.75 mL | 75 u | 2 doses |
| Trial maximum | 15 mg | once weekly | 1.125 mL | 112.5 u ⚠ | 1 doses |
About Tirzepatide
Metabolic / IncretinA dual incretin agonist. SURMOUNT-1 established the 5/10/15 mg maintenance arms with a four-week-per-step escalation from 2.5 mg.
Buy Tirzepatide
SyringesU-100 insulin · 1 mL · 29–31G
Alcohol wipes70% isopropyl prep pads
Serum base — for topical mixesHyaluronic acid serum for mixing peptides into a serum
Electric cooler caseTSA-approved travel cooler — keeps mixed vials at fridge temperature
Storage caseHard carry case for vialsPaid affiliate links.
Common Questions — Tirzepatide
How much bacteriostatic water do I add to a 20 mg vial of Tirzepatide?
Adding 1.5 mL of bacteriostatic water to a 20 mg vial gives 13.3 mg/mL. That is the mix every number on this page is worked out from — change the water figure in the calculator and all the draw amounts update.
What dose of Tirzepatide is used in research?
Published and reported figures for Tirzepatide run from 2.5 mg to 15 mg, typically once weekly.5 mg to 15 mg, typically once weekly.5 mg to 15 mg, typically once weekly. This site lists each figure with the source it came from rather than giving a single recommended number.
How many units on the syringe is a 2.5 mg dose of Tirzepatide?
At 13.3 mg/mL, a 2.5 mg dose is 18.8 units on a 1 mL U-100 insulin syringe. One vial at that mix gives about 8 doses.
How strong is the evidence behind these Tirzepatide doses?
Tirzepatide is graded clinical. Human trial or approved-label dosing has been published for this compound. We grade every compound on this site so you can weigh the numbers accordingly — the full method is on our editorial policy page.
Is there a Tirzepatide titration schedule?
Yes — Approved-label escalation. The week-by-week table on this page converts each step into the exact amount to draw for your mix.