Optimum Nutrition
Optimum Nutrition has been making sports nutrition since 1986. Gold Standard 100% Whey is the tub you’ve seen in every gym locker room, and its micronized creatine is one of the most-reviewed supplements on Amazon.
The Lineup
Optimum Nutrition Micronized Creatine
5g of micronized creatine monohydrate per scoop, banned-substance tested, 82K+ Amazon ratings.
Optimum Nutrition Gold Standard 100% Whey
The gym-locker-room classic: 24g of whey per scoop, isolate first, and more flavors than you can drink.
All Optimum Nutrition Reviews
The 10 Best Creatine Supplements of 2026 (Powders, Capsules and Chews)
Creatine is the most-researched sports supplement on the planet, and most of them are the same white powder. Here's how to pick the right one without getting fleeced.
The 10 Best Protein Powders of 2026 for Building Muscle Without Chugging Chalk
You lift. You eat. You still can't hit your protein. Here are the 10 best protein powders, from the classic whey tub to lactose-free, plant-based and zero-carb picks.
Why Optimum Nutrition Micronized Creatine Is a Must-Have for Every Guy Who Lifts
The most-researched sports supplement, from a brand that tests it, in a tub that lasts four months. Here's why ON Micronized Creatine lives on our shelf.
Why Optimum Nutrition Gold Standard Whey Is the Protein Powder Every Guy Should Own
24g of protein, mixes in seconds, and Double Rich Chocolate tastes like a reward. Here's why the Gold Standard tub has earned its spot on the kitchen counter.
Optimum Nutrition vs BulkSupplements Creatine: Which Monohydrate Should You Buy?
The gym-bro legend versus the plain-pouch bargain. We compared testing, mixability, packaging and price per gram to find the better creatine.
Optimum Nutrition Gold Standard vs Dymatize Elite Whey: Which Protein Powder Should You Buy?
The most famous whey on earth versus the rival that's got 1g more protein per scoop. We compared labels, macros, flavors and owner reviews to find the better tub.