GLP-1 drugs are prescription medications that help people lose weight by reducing appetite and slowing digestion. They mimic a natural hormone your body already produces.
What GLP-1 means
GLP-1 stands for glucagon-like peptide-1. It is a hormone your gut releases after eating. It tells your brain you are full and slows how fast food leaves your stomach.
GLP-1 medications are synthetic versions of this hormone, designed to work longer and more powerfully than your natural supply.
How they help with weight loss
GLP-1 drugs work in three main ways:
- Reduce hunger — they signal your brain to feel less hungry between meals
- Increase fullness — you feel satisfied sooner during meals
- Slow stomach emptying — food stays in your stomach longer, reducing the urge to eat again quickly
Many patients describe it as the “food noise” finally going quiet.
Who qualifies
Most GLP-1 weight loss programs require:
- BMI 30 or higher
- Or BMI 27 or higher with a weight-related condition like high blood pressure, prediabetes, or sleep apnea
Main options in 2026
Injections
- Wegovy (semaglutide) — weekly injection, one of the most prescribed
- Zepbound (tirzepatide) — weekly injection, often strongest weight loss results
- Saxenda (liraglutide) — daily injection, older option
Pills
- Oral Wegovy (semaglutide pill) — FDA-approved late 2025, launched January 2026
- Foundayo (orforglipron) — Eli Lilly’s GLP-1 pill, approved April 2026
Off-label
- Ozempic (semaglutide) — approved for diabetes, commonly prescribed off-label for weight loss
Common side effects
- Nausea
- Constipation
- Diarrhea
- Bloating
- Reduced appetite that can feel too strong early on
Most side effects improve with slower dose increases and better eating habits.
Bottom line
GLP-1 drugs work by mimicking a natural hunger hormone to reduce appetite and slow digestion. They are not magic — they work best when combined with protein-focused eating, movement, and consistent follow-up care.
Medical disclaimer: This content is for informational purposes only and is not medical advice. Consult a licensed healthcare provider before starting any treatment.
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FDA & Prescription Medication Disclaimer: Prescription medications referenced on this page are available only through a licensed healthcare provider after a clinical evaluation, and may not be appropriate or safe for everyone. Any statements regarding dietary supplements, wellness products, or off-label uses have not been evaluated by the U.S. Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary and are not guaranteed. Always read the medication guide and consult your prescriber and pharmacist about side effects, contraindications, and drug interactions.
