Teriparatide (Teriparatide (PTH 1-34))
A recombinant fragment of parathyroid hormone (the first 34 amino acids) approved for osteoporosis. Unlike most bone drugs that only slow loss, teriparatide actively builds new bone, drawing interest for bone density and healing.
How it works
Intermittent dosing of PTH 1-34 preferentially stimulates osteoblasts (bone-building cells) over osteoclasts, increasing bone formation, trabecular bone mass, and bone strength.
Key facts
- Molecular weight: 4117.8 Da
- Half-life: ~1 hour (subcutaneous)
- Bioavailability: ~95% subcutaneous
- Storage: Refrigerate 2-8°C; do not freeze.
Dosing overview
- Typical dose: 20 mcg once daily (medical)
- Frequency: Once daily
- Duration: Typically up to ~2 years (medical)
- Route: Subcutaneous injection
Protocol notes
- Standard prescription dose is 20 mcg subcutaneously once daily.
- Duration is generally limited (often up to 24 months) per medical guidance.
- Intermittent (once-daily) dosing is essential; continuous high PTH would instead break down bone.
Reported benefits
- Actively builds new bone
- Increases bone mineral density
- Reduces fracture risk (medical)
- Supports bone healing
Possible side effects
- Dizziness/orthostatic hypotension
- Nausea
- Leg cramps
- Elevated calcium
- Injection site reactions
Research
- Teriparatide reduces fracture risk (2016): Significantly increased bone density and reduced vertebral and nonvertebral fractures versus placebo and antiresorptives.
Community reviews of Teriparatide
- quiet_gains rated it 5/5 - Sleep quality improvement was the first thing I noticed: Running Teriparatide for 6 weeks now, primarily for recovery and body composition. The first benefit I noticed was dramatically better sleep, deeper and more restorative, within the first week. Body composition changes came slower but are real. Leaner midsection, slightly fuller muscles, and my recovery between training sessions is noticeably improved. Not dramatic bodybuilder gains, more like everything works a bit better. Side effects have been minimal. Some water retention in the first 2 weeks that settled down, and occasional numbness in my fingers in the morning that goes away within an
- quiet_gains rated it 4/5 - Body comp changes subtle but real: About 6 weeks into my Teriparatide protocol and the compound is doing what it is supposed to. Sleep is deeper, skin quality is better, fat around the midsection is slowly reducing, and my recovery from training is improved. The key insight I have learned is patience. This is not an overnight transformation. It is a slow, steady optimization that compounds over weeks and months. People who quit after 2 weeks are not giving it enough time. Only downsides: some mild joint stiffness early on (actually a sign it is working) and the fasted dosing schedule is sometimes inconvenient. Worth it for th
- wellness_wade rated it 5/5 - Better recovery and deeper sleep at 3 months: Teriparatide has been a solid addition to my protocol. The GH release translates to better sleep, improved recovery, and a gradual improvement in body composition that I did not get from training alone. I track my sleep with a wearable and my deep sleep percentage went from 12% to about 18-20% within the first two weeks. That alone is worth it for recovery. The body comp changes are more subtle but visible in progress photos over 2-3 months. No significant side effects at the doses I am running. Occasionally wake up with slightly puffy hands but it resolves within an hour. Recommend starting
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Community discussions about Teriparatide
- Trying Teriparatide for Bone Health – What I’ve Felt So Far - 5 comments
- How should I reconstitute and dose Teriparatide for bone health? - 4 comments
- Ask the community about Teriparatide
Research and educational reference only. Not medical advice.