We earn commissions on products that pass our evidence checks. We earn nothing on products we rate poorly.
You’ve seen the listicles. “Top 10 Supplements for Energy!” “Best Vitamins for Gut Health!” They’re all opinions dressed up as advice. We built something different.
Every rating on this site comes from a real meta-analysis of randomized controlled trials. That’s the gold standard in medical research. We pool data from multiple studies, calculate actual effect sizes, and tell you what the numbers say. No guessing. No vibes.
You’ll get a clear verdict for each supplement claim. Does it work? Maybe? No evidence at all? We show you the data behind every answer, including forest plots, confidence intervals, and study counts. If you want to dig deeper, you can. If you just want the bottom line, we’ve got that too.
Browse all supplements to see what we’ve rated so far. Or check out how we rate to understand our process from start to finish.
This isn’t another “top 10” site. It’s a reference tool built on published research. We don’t sell supplements. We don’t take money from brands. We just read the studies so you don’t have to.
Every supplement below has been rated using pooled data from randomized controlled trials. You’ll see what works, what doesn’t, and exactly how strong the evidence is.
Each page breaks down specific health claims with effect sizes, study counts, and a plain-English verdict. No hype. Just data.
We built SnakeOilCheck because most supplement info online is garbage. It’s either marketing disguised as advice or personal opinions with no data behind them.
We wanted a site where every claim is backed by pooled data from randomized controlled trials. Not one cherry-picked study. Not an influencer’s testimonial. Actual meta-analysis with effect sizes, confidence intervals, and evidence grades you can verify yourself.
The supplement industry is worth billions of dollars. Companies spend a fortune on marketing and very little on proving their products work. We think you deserve better than that. You deserve to know what the research actually says before you spend your money.
We’ll be posting research breakdowns, new study analyses, and supplement industry news here. Check back soon.
Wondering which supplement is better for a specific goal? Our comparison pages put two options side by side using the same research standards.
You’ll see effect sizes, study counts, and evidence grades for each, so you can make an informed choice instead of guessing. More comparisons coming soon.
Want to understand how supplement research actually works? These guides will help you read studies, spot junk science, and figure out what’s worth your money.
Start with How We Rate to see our process. Then check out How to Read Supplement Research to build your own skills. If you want to avoid getting scammed, read our Supplement Red Flags guide. And if you’re confused about capsules vs powders vs liquids, we cover that in Supplement Forms Explained.