Topic
What are the alternatives to branded GLP-1s?
Supplements, "natural GLP-1" claims and older prescription weight-loss drugs, compared using sourced evidence.
Berberine vs Ozempic: What the Evidence Actually ShowsNo — berberine is not "nature's Ozempic." Pooled trials show under 2 lbs of weight loss, while semaglutide produced 13.7% (33.1 lbs) at 72 weeks in a phase 3 trial. Berberine works through a different pathway and is not FDA-approved.Contrave vs. Wegovy: Weight Loss, Safety, Cost, and Who Fits EachContrave produced a placebo-subtracted mean weight loss of 4.7% at one year in its phase 3 trials, while Wegovy produced an average 13.7% loss at 72 weeks in SURMOUNT-5. The two differ sharply in safety profile, dosing, and price.Do GLP-1 Supplements Actually Work? What the Evidence ShowsNo over-the-counter product marketed as a GLP-1 supplement contains semaglutide or any GLP-1 drug, and none has matched the 7–24% weight loss of prescription GLP-1s in phase 3 trials. Fiber may be the most clinically reasonable adjunctive option, but it is not a drug substitute.FDA-Approved Weight Loss Drugs Compared: Results, Costs, WithdrawalsAverage weight loss in each drug's own trial: Zepbound 20.2%, Wegovy injection 14.9%, the Wegovy pill 13.6%, Foundayo 12.4%, Qsymia 10.9% — figures from separate trials, not head-to-head. Zepbound's list price is roughly $1,086 per month; fen-phen, Meridia and Belviq were withdrawn.Is "Nature's Ozempic" Real? Berberine and Other Claims, Fact-CheckedNo product sold as a "natural Ozempic" has evidence close to the real drug. Berberine showed no significant weight change in a meta-analysis, while Wegovy delivered 33.1 lbs of average loss at 72 weeks. Here is what the evidence shows.Metformin for Weight Loss: How Much Can You Really Lose vs GLP-1s?Metformin produced an average 2.1 kg weight loss in the Diabetes Prevention Program, where body weight fell 2.06% with metformin vs 0.02% with placebo. Wegovy (semaglutide) delivered 13.7% and Zepbound (tirzepatide, a dual GIP/GLP-1) 20.2% at 72 weeks. Metformin is not FDA-approved for weight loss.Phentermine vs GLP-1 Drugs: Cost, Weight Loss, and Who Fits WhichPhentermine is a short-term oral appetite suppressant that averaged $15 out of pocket per 30-day fill in 2025, while GLP-1s like Wegovy and Zepbound cost far more — in a 72-week head-to-head trial, Wegovy produced 13.7% and Zepbound 20.2% average weight loss. Here is how they compare.Qsymia vs Zepbound: Weight Loss, Cost, and Side Effects ComparedZepbound produced 20.2% average weight loss at 72 weeks vs 10.9% for top-dose Qsymia at 56 weeks, but Qsymia costs far less: about $74.99/month cash vs $299–$449 for Zepbound vials. The trials were not head-to-head.Research Peptides and GLP-1s: What They Are, and What Happened to UsersResearch-labeled GLP-1 vials are unapproved drugs sold illegally for human use, the FDA says. A study of 652 confirmed retatrutide users found gray-market buyers lost 7.2% of body weight versus 15.5% in trial participants, with a measurable heart-rate rise.