Optimum Nutrition Gold Standard Whey Isolate for lean protein
Optimum Nutrition Gold Standard 100% Whey Isolate is the brand's premium whey isolate format built for trainees who want the highest protein purity per serving with minimal carbs, fats and lactose. Each 30g serving delivers 25g of whey protein isolate at 110 calories, with 0.5g of fat, 1g of carbohydrates and 0.5g of sugars. The 903g tub provides approximately 30 servings.
The protein source is 100% whey protein isolate processed through cross-flow microfiltration to remove the majority of the lactose, fat and carbohydrate fractions found in whey concentrate. The result is 83% protein by weight - higher than the standard Gold Standard concentrate at around 71%. Each serving delivers approximately 5.5g of naturally occurring BCAAs with leucine at the front of the ratio for muscle protein synthesis signalling.
What separates Gold Standard Isolate from the original Gold Standard Whey is the macro stripping. Cutting carbs from 3g to 1g and removing most of the lactose makes the isolate format suitable for trainees with mild dairy sensitivity and for the strictest cut phases where every gram of carbohydrate is counted. The Gold Standard brand legacy adds the third-party-testing credibility ON has built since 1986.
Gold Standard Isolate suits trainees in defined cut phases, competitive lifters tracking macros tightly, those with mild lactose sensitivity who don't tolerate concentrate well, and athletes who want the Gold Standard quality benchmark in the leanest format. It is not the right pick if budget is the priority. Contains milk and soy lecithin.
Value alternative: XL Nutrition XTRA Whey 2kg — £34.99 for 66 servings at just £0.53 each (21g protein, 122kcal per 30g scoop). That's roughly 63% less per serving than this product's £1.45/serving cost.
