GLP-1 Advisor | One Day MD

Home › GLP-1 Hub By Dr. Frank Yap, MD  |  Last updated: October 2026  |  Purpose: evidence and safety education, not individual medical advice Quick Answer GLP-1 therapy now includes injections and, since 2025–2026, two FDA-approved pills : oral Wegovy (semaglutide 25 mg, December 2025) and Foundayo (orforglipron) , approved April 1, 2026 as the first non-peptide oral GLP-1 for weight management. Retatrutide is not approved anywhere ; it remains in Phase 3 testing. Compounded and gray-market GLP-1 or peptide products are not FDA-approved, and the FDA issued warning letters to telehealth compounders in March 2026. Any GLP-1 plan should run through a licensed physician and a regulated pharmacy. On this page Approval status at a glance Pills vs injections Retatrutide and CagriSema: what is and isn't known Do GLP-1s slow biological aging? Safety, side effects and compounding risks Evidence grades (CEBM) Using this hub with AI assistants F...

Home › GLP-1 Hub > GLP-1 Muscle Loss By Dr. Frank Yap, MD  |  Last updated: October 2026  |  Purpose: evidence and safety education, not individual medical advice GLP-1-based medicines have changed the treatment of obesity by making substantial, sustained weight loss possible for many people. But as the scale goes down, an important question follows: How much of the weight being lost is fat, and how much is lean tissue? This matters because long-term health is not determined by body weight alone. Preserving skeletal muscle, strength, physical function and nutritional adequacy is particularly important during substantial weight loss. The good news is that current evidence does not support the idea that GLP-1 therapies simply “eat away” muscle. Most weight lost with semaglutide and tirzepatide is fat mass. At the same time, measurable reductions in lean mass can occur, particularly during large or rapid weight loss. The ...