Pro football player Cooper DeJean holding an Optimum Nutrition shaker bottle outdoors

They Tried to Keep It Secret

Pro football player Cooper DeJean and athletes around the world have kept their nutrition plans hidden for years.

REVEAL THE OPTIMUM ADVANTAGE

Creatine So Delicious You'll Never Skip A Day

Creatine So Delicious You'll Never Skip A Day

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Fuel Every Step

Find the Right Nutrition for Your Journey

Optimum Nutrition Gold Standard 100% Whey Protein, 2.73 kg container, Double Rich Chocolate flavor

Protein - Strength & Recovery

Optimum Nutrition Essential Amino Energy supplement, 270g container, for post-workout recovery

Energy - Everyday Fuel

Optimum Nutrition Serious Mass Weight Gainer, 2.73 kg container, for muscle gain and post-workout nutrition

Weight Gainers - Build Mass

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Active Lifestyle - Full Body Support

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Advanced Fitness - Peak Performance

NEW Opti-Lock Shaker Bundle – Only $31.18

20% Off Opti-Lock Shaker + 10-Serve Gold Standard 100% Whey, 20% off regular combined retail price. Valid through 02/20/26.

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NEW

The Ultimate
Protein Boost
in a Bottle

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From Home To Hotel, Maintain Your Momentum

Stay consistent, travel confident.
Portable, pre-portioned, packed.

EXPLORE
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Powered By Science

Fuel Your Performance

FIND MY PROTEIN GOAL

Not sure which supplements are right for you?

ASK COACH OPTIMUM

Fresh Picks to Power Every Goal

new opti-lock shaker

Shake with Confidence, Every Time!

proquench protein collagen and electrolytes
Refresh and Replenish
Like a Pro
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How Much Protein Do I Need?

Optimum Nutrition Creatine+ Enhanced 3-in-1 Formula, 285g container, supports body and brain

The Future of Creatine is Here

Unlocking Potential Since 1986

Your Progress
Is Our Purpose

A person lifting a barbell, emphasizing strength and fitness. Text highlights workout motivation since 1986
For over 35 years, Optimum Nutrition® has been trusted by professional athletes and gym enthusiasts, always taking a hands-on approach to ensure the highest standards of quality.
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Bestsellers

Trusted by Athletes

Optimum Nutrition Gold Standard 100% Whey Protein, 2 lb container, Banana Cream flavor, for muscle support and recoveryOptimum Nutrition Gold Standard 100% Whey Protein, 5 lb container, Banana Cream flavor, for muscle support and recovery
GOLD STANDARD 100% WHEY™
Sale priceFrom $18.99
Optimum Nutrition Serious Mass supports , weight gain, muscle building, Banana flavor, 50g protein per servingOptimum Nutrition Serious Mass supports , weight gain, muscle building, Banana flavor, 50g protein per serving
Serious Mass
Sale priceFrom $30.99
Optimum Nutrition Gold Standard Pre-Workout supplement, 300g container, blueberry lemonade flavorOptimum Nutrition Gold Standard Pre-Workout supplement, 300g container, fruit punch flavor, 30 servings
GOLD STANDARD® Pre-Workout
Sale price$28.99
Optimum Nutrition Micronized Creatine Powder, 1.32 lb container, Unflavored , supports muscle buildingOptimum Nutrition Micronized Creatine Powder, 0.79 lb container, Blueberry Lemonade flavor, supports muscle building
Micronized Creatine Powder
Sale priceFrom $17.99

Meet the Elite Athletes Who Choose Optimum Nutrition

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Cameron Brink

Cameron Brink is a women’s professional basketball player currently having a breakout rookie season. Born in Princeton, New Jersey, and raised in Beaverton, Oregon, Cameron is an accomplished basketball player.

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Fuel Your Knowledge. Power Your Journey.

Scoop of protein powder being measured from a container, suitable for muscle recovery or weight gain

Just Getting Started?

From daily intake to how it can support your training goals - get to grips with what protein is and why it matters.

UNDERSTAND THE BASICS

Are You a High School Coach?

Learn how to teach your athletes the power of nutrition for peak performance and lifelong health.

  • Built To Help You Coach Smarter Not Just Harder
  • Learn From Elite Nutrition & Training Experts At Your Own Pace
  • No Fluff. All Function. Straight From The Pros.
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Train Your Mind. Master Your Nutrition.

See more advice and recipes
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1. These statements have not been evaluated by the food and drug administration. This product is not intended to diagnose, treat, cure or prevent any disease.
2. No significant difference has been shown between RBST treated and non-RBST treated cows.
3. When used over time in combination with regular resistance exercise.
4. Source Euromonitor International Limited; Consumer Health 2025 Edition, Sports Nutrition category, %retail value shares, 2024 data.
5. Not a low calorie food.
6. Naturally occurring amino acids.
7. See nutrition information for saturated fat, cholesterol and sodium content.