How Many Doses in a Forteo Pen?
A Forteo pen contains 28 doses of teriparatide, the active ingredient used to treat osteoporosis. Each dose is 80 mcg (delivered in 80 microliters), providing a full 28-day supply for daily subcutaneous injections.[1]
Forteo Pen Delivery Details
The prefilled, multidose pen is designed for one injection per day. It holds 2.4 mL of solution total, with each press dispensing exactly 80 mcg/80 μL. Users dial to "2" for the dose, and the pen locks after 28 uses to prevent overuse.[1][2]
Storage and Handling After Opening
Keep the pen refrigerated (2-8°C) before first use. After initial injection, it can stay at room temperature (up to 25°C) for 28 days max, but discard if expired or empty. No need to shake or mix.[2]
What If the Pen Runs Out Early?
Prime the pen before first use (two test sprays, which don't count as doses). If doses seem short, check for air bubbles, improper storage, or consult a pharmacist—most issues stem from user error, not manufacturing.[2]
[1]: Forteo Prescribing Information (FDA)
[2]: Forteo Patient Instructions for Use (Lilly)