Teriparatide Half-Life, Pen Strength & Tracking
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Teriparatide: pen strength and half-life

Pen strength · Half-life ~1 hour

What is teriparatide?

Teriparatide is a recombinant copy of the first 34 amino acids of human parathyroid hormone (PTH 1-34). It is FDA approved as Forteo for osteoporosis at high risk of fracture in postmenopausal women and in men, and for glucocorticoid-induced osteoporosis.

Also known as: Forteo, PTH 1-34.

Pens: nothing to mix

Forteo comes in a prefilled pen holding 560 mcg in 2.24 mL (250 mcg/mL), which delivers 28 daily doses of 20 mcg. There is nothing to mix and no syringe math. The label dose is 20 mcg under the skin of the thigh or abdomen once a day.

If you also use a powder peptide, the free peptide reconstitution calculator handles the vial math.

Teriparatide half-life and time to peak

  • Half-lifeabout 1 hour
  • Time to peak (Tmax)about 30 minutes

The FDA Forteo label gives a serum half-life of about 1 hour after an injection under the skin, with peak levels about 30 minutes after a 20 mcg dose and levels too low to measure within 3 hours.

Numbers shown are taken from the source above. Half-life varies from person to person and with injection site.

How to track teriparatide in Dose Track

  1. Add teriparatide as a custom compound. It is not in the built-in list, but a custom compound gets the same vial, units and reminder tools, and it sits next to everything else you take.
  2. Log each pen as you use it, with the injection site, so you can see your history at a glance.
  3. Set reminders on your own schedule, whether that is daily, weekly or every few days.
  4. Your log stays on your phone.
AbaloparatideTymlos · half-life about 1 hour HGH (Somatropin)somatropin, Genotropin · half-life about 3.5 hours

Frequently asked questions

Do you need to mix teriparatide?+
Forteo comes in a prefilled pen holding 560 mcg in 2.24 mL (250 mcg/mL), which delivers 28 daily doses of 20 mcg. There is nothing to mix and no syringe math. The label dose is 20 mcg under the skin of the thigh or abdomen once a day.
What is the half-life of teriparatide?+
The FDA Forteo label gives a serum half-life of about 1 hour after an injection under the skin, with peak levels about 30 minutes after a 20 mcg dose and levels too low to measure within 3 hours.
Can I track teriparatide in Dose Track?+
Yes, as a custom compound. Teriparatide is not in the built-in list, but you can add it yourself. You can then log each shot next to your other compounds and get reminders. Your log stays on your phone.

Sources

  1. Forteo (teriparatide) prescribing information, sections 1, 2, 3 and 12.3. DailyMed, August 2026.

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