Why supplement pricing varies
Vitamin and supplement pricing across iHerb, Amazon Subscribe and Save, GNC, Vitacost, and brand-direct varies by category and retailer specialty. iHerb specializes in international and natural brands at competitive pricing. Amazon Subscribe and Save catches mainstream supplement brands at 5 to 15 percent off. GNC carries premium sport nutrition with frequent BOGO events.
Where each retailer wins
For Now Foods and natural supplement brands, iHerb is typically deepest with broad selection. For Optimum Nutrition Gold Standard Whey and mainstream sport nutrition, Amazon Subscribe and Save with 5+ items per delivery beats GNC and Vitacost. For Garden of Life and premium organic, brand-direct Friends and Family events catch deepest pricing.
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