Quality Testing
In addition to testing each ingredient that arrives at our factory to verify precise specifications, Optimum Nutrition tests every product at different stages of production. This uncompromising commitment to quality assurance is what distinguishes us as a company.
GOLD STANDARD 100% ISOLATE™
To create GOLD STANDARD 100% ISOLATE™, we start by selecting only the highest quality whey protein which undergoes a series of sophisticated filtration processes to ‘isolate’ out excess fat, cholesterol, and sugar. A portion of this Whey Protein Isolate is then hydrolyzed-broken down into smaller chains of amino acids – for easier digestion. The final product is a fast digesting complete protein containing no more than 1 gram of carbohydrates, zero grams of fat and more than 80% of pure protein per serving. We put it in the hard work to assure superior quality, so you can focus on achieving ambitious performance goals.
Leading The Industry Our Way
30 Years ago, Optimum Nutrition set out on a mission to bring uncompromising quality to the sports nutrition industry. This commitment led us to become one of the few sports nutrition companies to plan, build and operate state-of-the-art powder manufacturing facilities, which allows us to maintain hands-on control over quality through the entire production process. Then we took additional steps to maintain these facilities at GMP Registered and GMP for Sport by NSF. This commitment to quality has led to Optimum Nutrition being the most trusted sports nutrition brand, sold in over 77 countries.
Selecting Only The Best
Quality – Test – Re-Test
Optimum Nutrition qualified, tests, and re-tests every step of the way. After carefully selecting raw material suppliers, each ingredient is tested to assure exceptional purity, potency and composition. The effort then intensifies with Uncompromising Quality where each batch is tested before it leaves our factory. We use advanced applications to maintain standards so high, we reject more whey protein than some of our competitors sell in a year.
GOLD STANDARD 100% ISOLATE™ was formulated and developed at the Optimum Nutrition U.S. Research & Development Center and made in our own U.S. manufacturing facilities. Our top professionals in the industry put in long hours to set this new standard for delicious taste and high protein percentage per serving.
Beyond the Basics
- 25 grams of pure whey protein isolate.
- 1 gram of carbs per serving.
- Hydrolyzed and ultra-filtered whey protein isolate.
- Each serving of Gold Standard 100% Isolate is composed of at least 80% protein.
- Delicious taste in 6-8 fluid ounces of cold water.
- *5.5 grams of naturally occurring BCAAs.
- 4.3 grams of naturally occurring glutamine & glutamic acid.
- 11.4 grams of naturally occurring essential amino acids.
Informed-Choice is a quality assurance program for sports nutrition products. The program certifies that nutritional supplements that bear the Informed-Choice logo have been tested for banned substances by the world class anti-doping lab, LGC Limited.
Suggested use
Mix 1 scoop (31 g) with 6 to 8 fluid ounces of cold water.
For healthy adults, consume enough protein to meet your daily protein requirements with a combination of high protein foods and protein supplements throughout the day as part of a balanced diet and exercise program.
Other ingredients
Hydrolyzed whey protein isolate, whey protein isolate, natural and artificial flavor, lecithin, sucralose.
Contains: Milk and soy.
Warnings
Notice: Use this product as a food supplement only. Do not use for weight reduction.
Store in a cool, dry, place.
Contents sold by weight not volume.
Serving scoop included, but may settle to the bottom during shipping.

Optimum Nutrition, ESSENTIAL AMIN.O. ENERGY, Orange , 1.29 lb (585 g)
Arthur Andrew Medical, Syntol AMD, 360 Capsules
Optimum Nutrition, Glutamine Powder, Unflavored, 2.2 lbs (1 kg)
Zahler, Prenatal + DHA 300, 120 Softgels
Optimum Nutrition, ESSENTIAL AMIN.O. ENERGY, Concord Grape, 1.29 lbs (585 g)
Pure Synergy, Heart Protector, 60 Capsules
Garden of Life, Vitamin Code, Perfect Weight, 240 Vegetarian Capsules
Gaia Herbs, Floradix, Floravital Iron + Herbs, 23 fl oz (700 ml)
Controlled Labs, Purple Wraath, Juicy Grape, 2.54 lbs (1,152 g)
Maximum Human Performance, LLC, Secretagogue-Gold, Orange, 30 Stick Packs, 0.53 oz (14.9 g) Each
Optimum Nutrition, Platinum Hydro Whey, Turbo Chocolate, 3.61 lb (1.64 kg)
Optimum Nutrition, Gold Standard 100% Casein, Chocolate Peanut Butter, 3.97 lb (1.8 kg)
Dymatize, ISO100 Hydrolyzed, 100% Whey Protein Isolate, Birthday Cake Pebbles, 5 lb (2.3 kg)
Biotivia, TransmaxTR, MicroActive-Resveratrol, 60 Capsules
Herbs Etc., Essiac Tonic, 120 Fast-Acting Softgels
Renew Life, Ultimate Flora Colon Care Probiotic, 80 Billion CFU, 60 Vegetarian Capsules
Dr. Mercola, Magnesium L-Threonate, 270 Capsules
Pure Essence, EnergyPlus, 120 Tablets
Dr. Mercola, Collagen Complex Type l, ll & lll, Chocolate, 5 g, 14.81 oz (420 g)
Dr. Axe / Ancient Nutrition, Multi Collagen Protein, 40 Single Stick Packets, 0.36 oz (10.1 g) Each
Source Naturals, Men's Life Force Multiple, 180 Tablets
Vega, Sport , Plant-Based Premium Protein, Chocolate, 4 lb 5.9 oz (1.98 kg)
Nutricology, Mastic Gum, 240 Vegetarian Capsules
Vital Proteins, Marine Collagen, 360 Capsules
Vibrant Health, Green Vibrance +25 Billion Probiotics, Version 19.1, 23.83 oz (675.6 g)
Vital Nutrients, BCQ, 240 Vegetarian Capsules
Symbiotics, Colostrum Plus, Powder, 21 oz (597 g)
MuscleTech, Nitro Tech, Whey Peptides & Isolate Lean Musclebuilder, Milk Chocolate, 10 lbs (4.54 kg)
Houston Enzymes, TriEnza Powder, 115 g
RSP Nutrition, TrueFit, Grass-Fed Whey Protein Shake with Fruits & Vegetables, Chocolate, 4.32 lbs (1.960 kg)
Controlled Labs, Purple Wraath, Purple Lemonade, 2.54 lbs (1152 g)
Biotivia, Transmax, 500 mg, 60 Capsules
RSP Nutrition, TrueFit, Grass-Fed Protein Powder Drink Mix with Fruits & Veggies, Vanilla, 4.23 lbs (1,920 g)
Renew Life, Women's Care Probiotic, 60 Vegetarian Capsules
Econugenics, PectaSol, Modified Citrus Pectin, 270 Vegetarian Capsules
Xtend, The Original 7G BCAA, Blue Raspberry Ice, 2.78 lb (1.26 kg)
Kirkman Labs, Super Nu-Thera, 360 Capsules
Jarrow Formulas, SAMe (Disulfate Tosylate), 400 mg, 60 Enteric Coated Tablets
Optimum Nutrition, Gold Standard 100% Casein, Chocolate, 4 lb (1.81 kg)
Xtend, Pro, Whey Isolate, Vanilla Ice Cream, 5 lb (2.27 kg)
Vital Proteins, Matcha Collagen, Original Matcha, 12 oz (341 g)
Renew Life, Extra Care Digestive Probiotic, 50 Billion CFU, 90 Vegetarian Capsules
New Chapter, Bone Strength Take Care, 270 Vegetarian Slim Tablets
iWi, Women's Multi Pouch, Complete Multivitamin + Omega-3, 120 Softgels
NaturesPlus, Beyond CoQ10, 60 Softgels
Vega, Sport, Plant-Based Premium Protein Powder, Vanilla, 4 lb 1.8 oz (1.86 kg)
Dymatize, Elite Casein, Cookies & Cream, 4 lbs (1.8 kg)
MuscleTech, Performance Series, Nitro Tech, Whey Peptides & Isolate Lean Musclebuilder, Vanilla, 10 lbs (4.54 kg)
MuscleTech, Nitro Tech, 100% Whey Gold, Double Rich Chocolate, 8 lbs (3.63 kg) 





