Somatropin vs Anamorelin
Head-to-head comparison of Somatropin (Recombinant human growth hormone (rhGH)) and Anamorelin (Anamorelin hydrochloride (ONO-7643)) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | Somatropin | Anamorelin |
|---|---|---|
| Category | Growth Hormone | Growth Hormone |
| Full Name | Recombinant human growth hormone (rhGH) | Anamorelin hydrochloride (ONO-7643) |
| Molecular Weight | 22125 Da | N/A |
| Half-Life | 2-4 hours | about 9 hours |
| Amino Acids | 191 | N/A |
| Typical Dose | 0.004-0.03 mg/kg/day | 50 mg/day |
| Route | Subcutaneous | Oral |
| Purity | ≥98% | ≥98% |
| Studies Count | 2000 | 95 |
| Research Status | Clinical/Approved | Clinical |
Somatropin Benefits
- ✓linear growth support
- ✓lean mass preservation
- ✓bone mineral accrual
- ✓IGF-1 elevation
Anamorelin Benefits
- ✓stimulates appetite
- ✓raises IGF-1
- ✓may support weight gain
- ✓oral dosing
Somatropin Dosing
daily subcutaneous dosing|titrate to IGF-1 and response|weight-based replacement protocols
Anamorelin Dosing
50 mg orally once daily|often studied with food or per protocol|track weight, appetite, and glucose markers
Somatropin Side Effects
- ⚠edema
- ⚠arthralgia
- ⚠insulin resistance
Anamorelin Side Effects
- ⚠hyperglycemia
- ⚠peripheral edema
- ⚠constipation or nausea
Research Overview
Somatropin
Somatropin is the best-studied growth hormone peptide, with decades of clinical use in pediatric and adult GH deficiency. Trials consistently show increases in IGF-1 and growth velocity, with adverse effects mainly reflecting excessive GH exposure.
Anamorelin
Trials in cachexia populations showed increased appetite and modest gains in body weight and IGF-1. Regulatory progress has varied by region, but it remains a well-studied ghrelin agonist in the GH space.
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