Optimum Nutrition Gold Standard 100% Isolate is a whey protein isolate powder: 25g of protein, 110 calories, 1g of carbs and 0.5g of fat per scoop, with 44 servings in this 3 lb tub. The protein comes from hydrolyzed whey protein isolate and whey protein isolate, with 5.5g of naturally occurring BCAAs per serving. It comes from Optimum Nutrition, the World's #1 sports nutrition brand (Euromonitor), and carries Informed Choice banned substance testing. This listing is the Chocolate Bliss flavor. Contains milk and soy, and Optimum Nutrition lists it as gluten free.

Nutrition Facts: Optimum Nutrition Gold Standard 100% Isolate Chocolate Bliss (Per 1 Scoop, 31g / 44 Servings)

Calories: 110
Protein: 25g
Total Carbohydrate: 1g (not a significant source of sugars)
Total Fat: 0.5g
Cholesterol: less than 5mg
Sodium: 190mg
Calcium: 150mg
Iron: 0.5mg
Potassium: 240mg

Ingredients: hydrolyzed whey protein isolate, whey protein isolate, cocoa powder (processed with alkali), natural and artificial flavor, lecithin, salt, sucralose
3 lb tub, 44 servings, Chocolate Bliss flavor
Mix 1 scoop with 6 to 8 fl oz of cold water, milk or another beverage
Contains milk and soy. Listed as gluten free
Informed Choice certified: regularly tested for banned substances

Where 100% Isolate Fits

Gold Standard 100% Whey is the shake most people know, and 100% Isolate is its leaner sibling. Every gram of protein comes from isolate, part of it hydrolyzed, so carbs and fat stay close to zero. That makes it a clean fit for anyone tracking macros tightly or cutting. The Informed Choice certification matters if you compete in a tested sport and want a protein that is screened for banned substances.

Whey Protein Isolate 25g

Whey isolate is filtered to remove most of the fat and lactose found in concentrate, which leaves a high protein, low carb powder. It is a complete protein, with all the essential amino acids, and each serving carries 5.5g of naturally occurring BCAAs including leucine. The hydrolyzed portion is pre-broken into smaller peptides. A 25g serving is a solid amount after training or between meals to help you reach your daily protein target and support recovery from training.

Frequently Asked Questions

How is 100% Isolate different from Gold Standard 100% Whey?
Gold Standard 100% Whey blends whey isolate with other forms of whey, including concentrate. 100% Isolate uses only whey protein isolate, with a share of it hydrolyzed. That keeps this formula at 1g of carbs and 0.5g of fat per scoop. If you want the leanest macros in the Gold Standard line, isolate is the pick.
Is it good for people who are sensitive to lactose?
Isolate is filtered to remove most lactose, so many people who struggle with concentrate do fine with it. It is still a milk product, and the label lists milk as an allergen. If you have a true milk allergy, skip it. If you are lactose sensitive, start with a half scoop and see how it sits.
Is it tested for banned substances?
Yes. Optimum Nutrition lists 100% Isolate as Informed Choice certified, which means it is regularly tested for banned substances. That is useful for athletes in tested sports. As always, check the certification on your tub and with your sport's governing body.
When should I drink it?
Optimum Nutrition suggests having it 30 to 60 minutes after a workout or as a snack any time of day. Timing matters less than hitting your total protein for the day. It stacks well with creatine and a carb source after training.

How to Use Optimum Nutrition Gold Standard 100% Isolate

Mix 1 scoop (31g) with 6 to 8 fl oz of cold water, milk or another beverage, and stir, shake or blend for about 30 seconds. Drink it after training or as a between meal protein, and add a second serving if you need more protein for the day. It also works in oats, pancakes and smoothies. Use it as part of a balanced diet, not as a replacement for meals.

Why Buy at Get Yok'd

Available in Burbank, Glendale, Glendale Galleria, North Hollywood, Northridge, and Pasadena
Authorized Optimum Nutrition retailer, with staff who can compare 100% Isolate and Gold Standard 100% Whey for your goals
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Allergen Note

Contains milk and soy (lecithin). Not for anyone with a milk or soy allergy. Optimum Nutrition lists this product as gluten free.

Optimum Nutrition - Gold Standard 100% Isolate - 3 lbs Chocolate Bliss