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: what is and isn't known Safety, side effects and compounding risks Evidence grades (CEBM) Explore the full GLP-1 & peptide library Using this hub with AI assistants FA...

Evidence-based guide | Last reviewed: October 17, 2026 Can you increase your body's natural GLP-1 levels with food, fibre, berberine or probiotics? And can these approaches deliver weight-loss results comparable to Ozempic, Wegovy or Zepbound? The interest in natural GLP-1 boosters has grown alongside the popularity of prescription weight-loss medicines. Social media frequently promotes berberine as "nature's Ozempic," prebiotic fibre as an appetite-suppressing strategy, and Akkermansia muciniphila as a next-generation microbiome supplement. But three different questions are often confused: Can an intervention increase the body's release of GLP-1? Can it improve appetite, glucose regulation or body weight? Can it produce results comparable to a prescription GLP-1-based medicine? The answer to the first question may be yes for certain dietary fibres and specific microbiome interventions. The second depends on the intervention and clinical evide...

By Dr Frank Yap, MD | Medically reviewed by the One Day MD Editorial Team | Last updated: August 2026 | Original publication: March 2023 Quick Answer A 2024–2025 meta-analysis of 50 RCTs (4,150 patients) confirms berberine modestly but reliably lowers fasting glucose, HbA1c, LDL cholesterol and inflammatory markers in type 2 diabetes and metabolic syndrome — solid, Tier 1a evidence. It is not "nature's Ozempic." Semaglutide produces roughly 10–15%+ body-weight loss in trials; berberine averages only about 2–4 lb a month. The mechanisms and effect sizes aren't comparable. Typical dosing is 500 mg, 2–3x daily with meals (1,000–1,500 mg/day). Bioavailability — not the milligram number on the label — is the biggest real difference between brands. New in 2026: A draft EU/UK scientific opinion (EFSA/COT, March 2026) flagged in-vitro genotoxicity signals, confirmed the CYP3A4 drug-interaction risk, and stated that regulators cannot yet establish a formal "...