Supplements
We research and compare the best fitness supplements available on Amazon, from protein powders to pre-workouts.
All picks
Optimum Nutrition Gold Standard 100% Whey Protein
Optimum Nutrition Gold Standard is the most evaluated whey protein on the market and remains the benchmark for a reason. Each serving delivers 24g of protein from a blend of whey isolate, concentrate, and peptides. It mixes smoothly, the flavor range is extensive, and third-party lab results consistently verify label claims. Our research confirms it is the safest default choice for most athletes.
Premier Protein Shake 12-Pack (11.5 fl oz)
Premier Protein shakes are the most convenient way to hit your protein goals. Each 11.5oz bottle packs 30g of protein with only 1g of sugar and 160 calories. They require no mixing, no cleanup, and taste good straight from the fridge. According to owner feedback, the Chocolate and Vanilla flavors are the most popular, and the Caramel is a sleeper favorite.
Cellucor C4 Original Pre-Workout Powder
C4 Original is the best-selling pre-workout on Amazon and a solid starting point for anyone new to pre-workout supplements. The 150mg caffeine dose provides energy without the jitters many competitors cause, and the beta-alanine and creatine nitrate formula supports endurance. Based on our research, the Watermelon and Icy Blue Razz flavors receive the highest marks from owners.
Garden of Life Organic Plant-Based Protein Powder
Garden of Life Organic is the best plant-based protein we evaluated. The blend of pea, brown rice, and seed proteins delivers a complete amino acid profile with 22g per serving. It is USDA Organic, Non-GMO Project verified, and free of artificial sweeteners. The Vanilla flavor mixes well into smoothies, though the texture is grainier than whey — a characteristic of all plant proteins.
XTEND Original BCAA Powder
XTEND Original is the top-selling BCAA supplement on Amazon and the most evaluated recovery drink in our comparison. The 7g BCAA blend supports muscle recovery, the added electrolytes aid hydration during workouts, and the sugar-free formula keeps calories at zero. Our research found that the Mango Madness and Blue Raspberry Ice flavors consistently receive the highest ratings.
AG1 Athletic Greens Powder Supplement (Travel Packs, 14 Count)
AG1 is the most-recognized name in the greens powder category and the one that actually tastes good. The formula stacks 75 vitamins, minerals, probiotics, prebiotics, and adaptogens into a single daily scoop, and the pineapple-vanilla flavor profile is shockingly drinkable for a category that often tastes like wet lawn clippings. The Travel Pack format is the lowest-friction way to try it — 14 single-serve sachets, no commitment beyond the cost of one pack. The full subscription model is the typical use, but the travel packs are how most people figure out whether they actually like it.
Amazing Grass Super Greens Powder Organic (60 Servings)
Amazing Grass Super Greens is the budget benchmark of the greens powder category. 60 servings per tub is roughly 3-4x the per-serving value of AG1's subscription pricing, and the formula covers the basics — alfalfa, wheat grass, spirulina, beet root, and a probiotic blend. Taste skews earthy and grassy compared to flavored premium options, and aggregated owner reviews consistently flag mixability as 'fine in smoothies, gritty in water.' The right pick for shoppers who prioritize servings-per-dollar over flavor or comprehensive ingredient stacks.
Garden of Life Raw Organic Perfect Food Green Superfood (30 Servings)
Garden of Life Raw Perfect Food is the pick for shoppers who care about the supply chain. It carries the USDA Organic, Non-GMO Project Verified, and gluten-free certifications, and the formula leans on juiced and dehydrated whole-food greens rather than the concentrated extracts most competitors use. The Original Stevia-Free version skips artificial sweeteners entirely, which means it tastes like greens — earthy and direct, no sugar coating. The right pick if certifications and clean ingredient sourcing matter more than flavor smoothness.
Orgain Organic Greens Powder + 50 Superfoods Original
Orgain Organic Greens Powder is the most accessible all-in-one in the category. 50 organic superfoods plus 1 billion probiotic CFUs land between Amazing Grass's basic formulation and AG1's 75-ingredient stack — broader than budget greens but without AG1's price tier. The Original flavor leans neutral, mixing cleanly into both water and smoothies based on aggregated owner reviews. Vegan, plant-based, gluten-free, non-GMO. The pragmatic middle pick for shoppers who want comprehensive ingredients without subscription pricing.