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Gold Standard 100% Isolate is Optimum Nutrition's premium whey isolate, filtered to remove most lactose and fat and to deliver roughly 25 g of protein per scoop with little carbohydrate. It mixes thin and fast in water and is aimed at lifters who want fast post-workout protein or a lean daily shake. Against cheaper whey concentrates it costs more per serving but suits lactose-sensitive stomachs better and digests lighter. Reviewers praise the mixability and taste; some find it too sweet and thin compared with a blend.
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Lowest price we've seen: $99.99 on Nov 10 at The Vitamin Shoppe. Tracked across 1 store since Nov 10.
Owners rate the isolate highly for mixing clean and tasting good, and lactose-sensitive users report fewer stomach issues than with concentrate. The main complaints are sweetness and a thin body in water.
