How does Teriparatide work?
Recombinant first 34 amino acids of parathyroid hormone (PTH 1-34). Intermittent daily dosing favors osteoblast activity over osteoclast activity, building new bone, opposite of bisphosphonates which slow bone breakdown. In plain terms, Teriparatide is a bone-building drug. A parathyroid-hormone fragment (PTH 1-34), FDA-approved as Forteo for severe osteoporosis. Anabolic for bone, the opposite of bisphosphonates. Mechanistic detail like this comes largely from preclinical and early research, the human picture is limited.
What people use it for
- Severe osteoporosis under endocrine care
- Stress-fracture recovery (off-label)
- Older adults with high fracture risk
References
- Effect of Teriparatide on the risk of fractures in postmenopausal women with osteoporosis — Neer RM et al., NEJM, 2001
- Effects of teriparatide and risedronate on new fractures in post-menopausal women with severe osteoporosis (VERO): a multicentre, double-blind, double-dummy, randomised controlled trial — Kendler DL, Marin F, Geusens P, et al. — The Lancet, 2018
- FORTEO (teriparatide) injection — FDA Prescribing Information — FDA / DailyMed (Eli Lilly and Company)
Pepdex is an editorial reference, not medical advice. Peptides vary in legal and approval status by country, many are research compounds without full human safety data. Talk to a qualified clinician before starting anything.
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Last updated 2026-06-06.