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IndexedBuilt automatically from public databases on 2026-09-30. Not yet hand-reviewed by PLOBT.How this works →

Lonapegsomatropin

FDA approved · Rx

Long-acting growth hormone

Also known as: Skytrofa

Evidence score
81/ 100
Strong evidence

Strong, human-grade evidence

  • Regulatory standing. FDA-approved prescription medicine
  • Human trials. Backed by controlled human studies
  • Registered human trials. 8 registered studies on ClinicalTrials.gov, most advanced Phase 3
  • 1 cited source. Includes primary / regulatory sources

Computed with the same four public criteria as every profile. The human-evidence grade on an indexed profile is set automatically and may change when it is hand-reviewed. It is not a safety score, not a purity rating, and not medical advice, and not a claim that this compound treats, cures, or prevents any condition.

What it is

Lonapegsomatropin, sold as Skytrofa, is a long-acting prodrug of somatropin (human growth hormone). Somatropin is attached to a carrier through a linker that slowly releases active, unmodified growth hormone over about a week, allowing less frequent injections than daily growth hormone.

What the evidence shows

Automatic summaryHuman trials

It is FDA-approved for growth failure due to inadequate endogenous growth hormone secretion in pediatric patients, and has also been approved for adults with growth hormone deficiency, supported by Phase 3 trials. Use outside approved indications is not established by human evidence.

Key facts

FDA approval
Confirmed on openFDA

Registered human trials

Published literature

Sources

Risks, side effects and study doses are only published on hand-reviewed profiles. Want this one reviewed, or spotted something wrong? Tell us.