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Peptide library / Bones & muscles / Calcitonin

FDA-approvedBones & muscles

Calcitonin

A 32 amino acid hormone, usually from salmon, used for bone conditions and high calcium.

Body system
Bones & muscles
Status
FDA-approved
Strongest evidence
FDA approved
Also known as
Miacalcin

Effects studied or claimed

What it is used or promoted for, and where each effect has actually been seen

  • Paget disease of boneFDA approved
  • HypercalcemiaFDA approved
  • Postmenopausal osteoporosisFDA approved

How it is thought to work

Calcitonin reduces the activity of osteoclasts, the cells that break down bone, and lowers blood calcium.

What the evidence shows

Its fracture-prevention benefit is modest. Regulators reviewed a small signal of increased cancer risk with long-term use of the nasal spray, leading to more limited use.

Safety and unknowns

Nausea and facial flushing from injections. Nasal spray can irritate the nose.

Regulatory status

FDA-approved as Miacalcin in 1986.

Regulatory status changes quickly. This entry was last reviewed on 27 October 2026. Confirm current status with the FDA before relying on it.

Sources

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General information, not medical advice. Do not buy or inject unregulated peptides.