Tesamorelin vs Orforglipron
Side-by-side comparison of key properties, dosing, and research.
Growth Hormone PeptidesFat Loss & Metabolic
TesamorelinGLP-1 / Weight Loss Agonists
Orforglipron- Summary
- Tesamorelin is an FDA-approved synthetic GHRH analog specifically indicated for reduction of excess abdominal (visceral) fat in HIV patients with lipodystrophy. It is the only GHRH peptide with FDA approval for a fat-reduction indication and is studied off-label for metabolic syndrome and cognitive function.
- Orforglipron is an oral, once-daily small-molecule GLP-1 receptor agonist developed by Eli Lilly. Unlike injectable GLP-1 peptides, it is a non-peptide compound absorbed orally without food restrictions, representing a major convenience advancement. Phase 2 trials showed up to 9.4% weight loss at 36 weeks, and Phase 3 trials (ATTAIN program) are ongoing for obesity and type 2 diabetes.
- Half-Life
- ~26 minutes
- ~12 hours (once-daily oral dosing)
- Admin Route
- SubQ
- Oral
- Research
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- Typical Dose
- 2 mg
- 12 mg → 24 mg → 36 mg → 45 mg
- Frequency
- Once daily
- Once daily
- Key Benefits
- FDA-approved for visceral fat reduction in HIV lipodystrophy
- Significant reduction in trunk/visceral fat (average 15–20% in trials)
- Improved triglyceride and lipid profiles
- Potential cognitive benefits and memory improvement
- Preserves lean mass while reducing fat
- Natural pulsatile GH stimulation
- Oral pill — no injections required
- Once-daily dosing without food restrictions (unlike oral semaglutide)
- Up to 9.4% body weight reduction in Phase 2 at 36 weeks
- Significant HbA1c reduction in type 2 diabetes trials
- Small-molecule stability — no cold chain requirements
- Broadens access for injection-averse patients
- Potential class-defining convenience advantage over injectable GLP-1s
- Side Effects
- Injection site reactions (redness, irritation)
- Arthralgia and joint pain
- Peripheral edema
- Carpal tunnel syndrome
- +2 more
- Nausea (most common, dose-dependent)
- Vomiting
- Diarrhea
- Decreased appetite
- +2 more
- Stacks With
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