Quick answer: To find your monthly Tirzepatide cost, divide the vial price by the vial size (mg) for cost per mg, multiply by your weekly dose, then multiply by 4.33. A $100 30mg vial at 5mg/week is about $72.15/month.
What Tirzepatide actually costs per month
Sticker price on a vial tells you almost nothing about your real Tirzepatide cost. What matters is your cost per mg and how much you use each week. A bigger vial usually has a lower price per mg, but only pays off if you finish it before it expires. The calculator above works this out from the price you actually paid; the table below shows the pattern at a sample price.
Tirzepatide monthly cost by dose (example: $100 for a 30 mg vial = $3.33/mg)
| Weekly dose | Per week | Per month | Per year |
|---|---|---|---|
| 2.5 mg | $8.33 | $36.11 | $433.33 |
| 5 mg | $16.67 | $72.22 | $866.67 |
| 7.5 mg | $25.00 | $108.33 | $1300.00 |
| 10 mg | $33.33 | $144.44 | $1733.33 |
| 12.5 mg | $41.67 | $180.56 | $2166.67 |
| 15 mg | $50.00 | $216.67 | $2600.00 |
Example figures only, using a $100 / 30 mg vial. Enter your own price above for your real numbers.
Don't forget supplies
Bacteriostatic water, insulin syringes, and alcohol swabs add a small but real amount to your total. Toggle Include supplies above to fold an estimate into your monthly cost. Most people land a few dollars per month on top of the drug itself.
Frequently asked questions
How much does Tirzepatide cost per month?
It depends on your vial price, vial size, and weekly dose: cost/month = (price ÷ vial mg) × weekly dose × 4.33. A $100 vial of 30mg used at 5mg/week is about $72.15/month.
How do you calculate Tirzepatide cost per mg?
Divide the price you paid by the milligrams in the vial. $100 ÷ 30mg = $3.33/mg. Cost per mg lets you compare vials of different sizes and prices fairly.
How long does one vial of Tirzepatide last?
Divide the vial size by your weekly dose. A 30mg vial at 5mg/week lasts about 6.0 weeks.
Note: This tool uses only the price you enter. It does not quote, recommend, or endorse any vendor's pricing. For educational use only.