Orforglipron vs Liraglutide
Side-by-side comparison of key properties, dosing, and research.
GLP-1 / Weight Loss Agonists
OrforglipronGLP-1 / Weight Loss AgonistsFat Loss & Metabolic
Liraglutide- Summary
- 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.
- Liraglutide is a long-acting GLP-1 receptor agonist approved for type 2 diabetes (Victoza) and chronic weight management (Saxenda). It reduces appetite, slows gastric emptying, improves insulin secretion, and promotes weight loss of 5–10% in clinical trials.
- Half-Life
- ~12 hours (once-daily oral dosing)
- ~13 hours (once-daily dosing)
- Admin Route
- Oral
- SubQ
- Research
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- Typical Dose
- 12 mg → 24 mg → 36 mg → 45 mg
- Start 0.6 mg, titrate to 3 mg
- Frequency
- Once daily
- Once daily
- Key Benefits
- 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
- Promotes weight loss (5–10% average)
- Reduces appetite and caloric intake
- Improves blood glucose control (HbA1c reduction)
- Reduces cardiovascular events in T2DM (LEADER trial)
- Slows gastric emptying
- FDA-approved for T2DM and chronic weight management
- Cardioprotective effects shown in clinical trials
- May improve fatty liver (NAFLD/NASH)
- Side Effects
- Nausea (most common, dose-dependent)
- Vomiting
- Diarrhea
- Decreased appetite
- +2 more
- Nausea (very common, especially initially)
- Vomiting
- Diarrhea or constipation
- Decreased appetite
- +5 more
- Stacks With
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