Medication Library

Weight Loss Medication Guides

In-depth guides to Ozempic, Wegovy, Mounjaro, Zepbound, Saxenda, and other GLP-1 medications. Dosing, efficacy, side effects, costs, and how to get started.

Directory data refreshed: March 2026

GLP-1 Receptor Agonist

Semaglutide

Ozempic Wegovy Rybelsus
Weight Loss ~15-17% body weight loss
Dosing Once-weekly shot

The most widely prescribed GLP-1 medication for weight loss and type 2 diabetes management.

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Dual GIP/GLP-1 Receptor Agonist

Tirzepatide

Mounjaro Zepbound
Weight Loss ~20-22.5% body weight loss
Dosing One shot per week, same day each week

The first dual-action GIP/GLP-1 medication, delivering the highest weight loss in clinical trials.

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Oral GLP-1 Receptor Agonist

Orforglipron

Foundayo
Weight Loss ~12.4% body weight loss
Dosing One tablet by mouth, once daily, any time of day, with or without food or water

The first oral GLP-1 that does not require an empty stomach, a 30-minute wait, or a specific time of day. FDA approved April 2026.

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Triple Agonist (GIP/GLP-1/Glucagon)

Retatrutide

Investigational
Weight Loss ~28.3% body weight loss
Dosing Not yet commercially available. In clinical trials: one shot per week.

Eli Lilly's investigational triple agonist. Not yet FDA approved. In the TRIUMPH-1 Phase 3 trial, the highest dose produced about 28.3% average weight loss over 80 weeks, the strongest results ever published for a weight loss medication.

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Amylin + GLP-1 Combination

CagriSema

Investigational
Weight Loss ~22.7% body weight loss
Dosing Not yet commercially available. In clinical trials: one shot per week.

Novo Nordisk's once-weekly combination of cagrilintide and semaglutide. Not yet FDA approved. It was filed for review in December 2025 and produced about 22.7% average weight loss in the REDEFINE 1 trial, though it lost a head-to-head trial against Zepbound.

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GLP-1 Receptor Agonist

Liraglutide

Victoza Saxenda
Weight Loss ~5-8% body weight loss
Dosing One shot per day, any time of day

The first GLP-1 medication approved for weight management, now complemented by newer options.

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