Somatropin is a prescription growth-hormone medicine with approved uses for specific medical conditions. Evidence for treating growth-hormone deficiency does not show that it is a safe or effective anti-ageing or bodybuilding treatment for healthy adults.
Still uncertain: Whether benefits seen in deficiency apply to healthy adults seeking anti-ageing, bodybuilding or longevity effects.
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What does the evidence mean in simple terms? table
What is it?
191-amino-acid recombinant protein hormone
Entity type
Protein / growth-factor-related biologic
Research focus
Growth hormone deficiency and other licensed indications
Human evidence
Somatropin has extensive approved replacement evidence in diagnosed growth-hormone deficiency. In healthy older adults, systematic review evidence found modest body-composition changes with increased adverse effects and no basis for a broad anti-ageing claim.
Regulatory status
Multiple licensed somatropin products exist. An unverified product labelled as HGH or somatropin is not automatically an approved or quality-assured medicine.
Main limitations
That GH replacement evidence in deficiency supports routine anti-ageing, bodybuilding or longevity use in healthy adults.
Safety
Known risks include glucose intolerance, edema, intracranial hypertension and other label-specific warnings; misuse poses additional risks.
Evidence reviewed
2026-09-18
i
Somatropin has extensive approved replacement evidence in diagnosed growth-hormone deficiency. In healthy older adults, systematic review evidence found modest body-composition changes with increased adverse effects and no basis for a broad anti-ageing claim.
Outcome-level evidence
Evidence is not one score.
Each record below answers a narrower question about an outcome, population or context. Evidence status and the study finding are shown separately so strong evidence is not mistaken for a positive effect.
GH produced small mean reductions in fat mass and increases in lean mass, with no significant body-weight change and limited effects on other outcomes.
WhichPeps does not rely on a single headline study when the evidence base is broader. Primary research, registries, regulators and supporting records are kept distinct.
2structured study records
3outcome records
6linked source records
How to read these counts: they show evidence coverage, not evidence strength. One large, well-designed study can be more informative than several weak or indirect records.
Show supporting and discovery sources
Study pages above contain the records used for public evidence summaries. The links below include supporting, regulatory and literature-discovery sources; a registry or search result is not treated as proof of benefit.
FDA source ↗ — Supports the evidence summary; read full paper before quoting exact endpoints.
Evidence rule: WhichPeps keeps human, animal, laboratory, regulatory and product/formulation evidence distinct. Common names help people find the page; they do not change the underlying scientific identity.
