We Compared Supplement Prices Across 6 Retailers — The Price Differences Will Shock You
If you're buying supplements, you're probably overpaying. We analyzed prices for 30 popular supplements across Amazon, iHerb, Vitacost, GNC, Bodybuilding.com, and Swanson Vitamins — and found price differences of up to 40% for the exact same product.
The Problem
The supplement market is a $60 billion industry, and pricing is anything but transparent. The same bottle of Vitamin D3 from NOW Foods can cost $11.99 at one retailer and $18.99 at another. That's a 58% markup for the identical product.
Key Findings
- GNC is consistently the most expensive — averaging 25-40% higher than the cheapest option
- Swanson Vitamins and iHerb tend to have the lowest prices across most categories
- Amazon falls in the middle — competitive but rarely the cheapest
- Per-serving cost is what matters, not sticker price. A $30 bottle with 120 servings beats a $15 bottle with 30 servings
- Protein and pre-workout categories show the highest absolute dollar savings
What We Built
SupplementPricer is like CamelCamelCamel for supplements. We compare prices across 6 major retailers so you can find the best deal without visiting 6 different websites. Every product page shows you the per-serving cost, highlights the best price in green, and shows you exactly how much you'll save.
Start Saving
Browse our vitamin comparisons, check out protein powder prices, or search for your favorite supplement. Every dollar saved on supplements is a dollar you can spend on actual food.