Sermorelin vs Tesamorelin: Head-to-Head Comparison
Both are GHRH analogs but tesamorelin is FDA-approved and has Phase III data for visceral fat reduction. Sermorelin was previously FDA-approved for pediatric use and is widely prescribed off-label in anti-aging clinics. Tesamorelin is more potent but substantially more expensive.
Approved options in this comparison
Sermorelin is currently modeled on this site as an approved treatment path for: Diagnosis and treatment of growth hormone deficiency in children. Brand names in the current dataset: Geref.
Tesamorelin is currently modeled on this site as an approved treatment path for: Reduction of excess abdominal fat in HIV-infected patients with lipodystrophy. Brand names in the current dataset: Egrifta, Egrifta SV.
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| Dimension | Sermorelin | Tesamorelin |
|---|---|---|
| Evidence Level | Formerly FDA-approved; extensive clinical use | Phase III trials; currently FDA-approved |
| FDA Status | Previously approved (withdrawn commercially) | Currently FDA-approved (Egrifta) |
| Mechanism | GHRH(1-29) analog | Modified GHRH analog with enhanced potency |
| Primary Use | GH deficiency, anti-aging | HIV lipodystrophy, visceral fat reduction |
| Half-Life | ~10-20 minutes | ~26-38 minutes |
| Side Effects | Flushing, headache, injection pain | Arthralgia, injection site reactions, edema |
| Cost | Low to moderate (widely compounded) | Very high (brand-name pharmaceutical) |
Peptide Overviews
Sermorelin
AFDA ApprovedSermorelin is the shortest fully functional fragment of GHRH (amino acids 1-29). It was the first GHRH analog approved by the FDA, marketed as Geref for diagnostic and therapeutic use. Geref was subsequently discontinued in the U.S. market, though sermorelin remains available through compounding pharmacies. Geref was subsequently discontinued in the U.S. market, though sermorelin remains available through compounding pharmacies.
Tesamorelin
AFDA ApprovedTesamorelin is a synthetic GHRH analog approved by the FDA as Egrifta for reduction of excess abdominal fat in HIV-infected patients with lipodystrophy.
GLP-1 Support Essentials
Products that can support side-effect management, hydration, and protein intake.
LMNT Electrolyte Packets
Sodium-focused electrolytes to prevent dehydration and fatigue common in early GLP-1 therapy.
High-Protein Shakes (30g)
Convenient protein shakes to maintain muscle mass on reduced GLP-1 caloric intake.
Metamucil Fiber Supplement
Soluble fiber powder to manage constipation and GI side effects during GLP-1 treatment.
Vitamin B12 (Methylcobalamin 1000mcg)
GLP-1 agonists can reduce B12 absorption over time — methylcobalamin is the most bioavailable form.
Ginger Chews for Nausea
Natural nausea relief for the dose-escalation adjustment period, particularly weeks 1–4.
Unflavored Whey Protein Isolate
Preserve lean mass without excess carbs or calories when appetite is suppressed.
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Sermorelin vs Tesamorelin: FAQ
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Medical Disclaimer
This content is for informational and educational purposes only and does not constitute medical advice, diagnosis, or treatment recommendations.
Always consult a qualified healthcare provider before starting, stopping, or modifying any treatment. Do not disregard professional medical advice based on information found on this site.
No claims of therapeutic efficacy are made for substances that are not FDA-approved for the discussed indications. Research citations reflect published findings and do not imply endorsement.