Semaglutide vs Liraglutide: Weekly vs Daily GLP-1 for Weight Loss
Compare semaglutide (Wegovy, weekly) vs liraglutide (Saxenda, daily) for weight loss. Efficacy, convenience, side effects, and cost breakdown.
Bottom Line
Based on current research, semaglutide comes out ahead in this comparison. See the full breakdown below for context — the best choice depends on your specific situation.
| Dimension | semaglutide | liraglutide | Notes |
|---|---|---|---|
| Weight Loss Efficacy | 15-17% | 5-8% | Semaglutide produces roughly double the weight loss of liraglutide in clinical trials. |
| Dosing Frequency | Once weekly | Once daily | Semaglutide offers significantly better convenience with weekly vs daily injections. |
| FDA Status | Approved | Approved | Both FDA-approved for chronic weight management (Wegovy and Saxenda respectively). |
| Side Effects | Moderate-High GI | Moderate GI | Both cause nausea and GI effects. Semaglutide may have slightly higher rates due to potency. |
| Monthly Cost | $1,000-1,350 | $1,000-1,350 | Brand-name costs similar. Both have compounded alternatives at lower price points. |
| Track Record | Newer (2021) | Longer (2014) | Liraglutide has longer post-market safety data. Both have strong clinical evidence bases. |
Learn more about each peptide
Semaglutide
Semaglutide is a GLP-1 receptor agonist originally developed for type 2 diabetes that has demonstrated significant weight loss effects in clinical trials. It is sold under the brand names Ozempic (diabetes) and Wegovy (weight management).
Liraglutide
Liraglutide is an older GLP-1 receptor agonist requiring daily injection. Sold as Victoza (diabetes) and Saxenda (weight loss), it has been largely superseded by weekly semaglutide but remains widely prescribed.
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Reviewed by Fat Man in the Arena · Updated March 2026
Medical Disclaimer: This comparison is for informational purposes only. Individual responses vary. Always consult a qualified healthcare provider before starting any peptide protocol.