Peptide library / Bones & muscles / Elcatonin
Elcatonin
An eel-derived calcitonin analog approved in Japan for osteoporosis pain.
Effects studied or claimed
What it is used or promoted for, and where each effect has actually been seen
- Osteoporosis and related bone painFDA approved
How it is thought to work
Elcatonin acts on calcitonin receptors to slow bone breakdown and has a pain-relieving effect in vertebral fractures.
What the evidence shows
Used in Japan for decades, with evidence mainly from regional clinical trials.
Safety and unknowns
Nausea, flushing and rare allergic reactions.
Regulatory status
Approved in Japan. Not approved by the FDA.
Regulatory status changes quickly. This entry was last reviewed on 27 October 2026. Confirm current status with the FDA before relying on it.
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General information, not medical advice. Do not buy or inject unregulated peptides.