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Statements on this site have not been evaluated by the FDA. Compounded preparations are subject to applicable state and federal regulations. Availability and eligibility vary.
Lonapegsomatropin (Skytrofa)
Long-acting pegylated growth hormone, once-weekly.
Plain-Language Label Highlights
Brand names: Skytrofa
Pediatric growth hormone deficiency (children 1 year and older, ≥11.5 kg).
A once-weekly growth hormone pen that slowly releases natural GH all week — instead of daily shots.
- •Viral infections
- •Cough
- •Fever
- •Hemorrhage
- •Injection-site reactions
- •Increased intracranial pressure
- •Slipped capital femoral epiphysis
- •Progression of scoliosis
- •Glucose intolerance
- •Adrenal/thyroid changes
- •Closed epiphyses
- •Active cancer
- •Acute critical illness
- •Severe respiratory impairment in Prader-Willi syndrome with obesity
Educational summary of the FDA prescribing information. Not a substitute for the full label or medical advice. Always discuss with a licensed prescriber.
Mechanism of Action
Prodrug of somatropin with a transient PEG linker that releases unmodified GH over ~1 week, providing once-weekly dosing for pediatric GH deficiency.
Research Areas
Common Research Protocols
0.24 mg/kg SC once weekly.
Protocols summarized for educational reference from published research. Not dosing guidance.
Cited Research
heiGHt trial
Non-inferior annualized height velocity vs daily somatropin.
Important Considerations
- •FDA-approved.
- •Same class warnings as daily GH (intracranial hypertension, scoliosis progression, glucose intolerance).
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Educational Information Only — Not Medical Advice
All content on this page is for educational and informational purposes only. It is not medical advice, diagnosis, or treatment. We make no claims that any peptide can diagnose, treat, cure, or prevent any disease. Peptides discussed are not FDA-approved for the indications listed unless explicitly stated otherwise.
Always consult a licensed healthcare provider before beginning any wellness protocol. Statements have not been evaluated by the FDA. Compounded preparations are subject to applicable state and federal regulations. Availability, eligibility, and pricing may vary.
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