Calculator
How to calculate peptide cost per month
Monthly cost depends on four numbers: the vial price, how many milligrams it holds, the amount used each time, and how often. Divide the vial’s contents by the amount per use to get uses per vial; divide price by uses to get cost per use; multiply by uses per month.
The formula
| Uses per vial | vial mg × 1000 ÷ amount per use (mcg) |
|---|---|
| Cost per use | vial price ÷ uses per vial |
| Uses per 30 days | uses per week ÷ 7 × 30 |
| Cost per 30 days | cost per use × uses per 30 days |
Worked example
A $60 vial containing 10 mg, used in 250 mcg amounts seven times a week:
- Uses per vial: 10,000 ÷ 250 = 40
- Cost per use: $60 ÷ 40 = $1.50
- Uses per 30 days: 7 ÷ 7 × 30 = 30
- Cost per 30 days: $1.50 × 30 = $45
- One vial lasts: 40 ÷ 1 per day = 40 days
The figures are illustrative arithmetic, not a suggested amount or schedule. Try your own numbers in the cost tab.
What the formula leaves out
- Dead space. Each draw leaves a little liquid in the needle hub and vial. Real-world usage is usually a few percent higher.
- Net content. If the vial contains less peptide than labelled, it runs out sooner than the math says.
- Stability. A reconstituted vial that must be discarded after a set time may expire before it is used up.
- Supplies. Syringes, bacteriostatic water and alcohol swabs add cost.
Questions
Why does my vial run out sooner than the calculator says?
Usually dead space losses, or a vial that contains less peptide than its label. Both are common.