Pure Whey Protein Isolate

Pure Whey Protein Isolate has 400 kcal per 100 g.

Pure Whey Protein Isolate contains 90 g of protein per 100 g.

Yes — 90 g of protein per 100 g, supplying 96% of its calories. That makes it an excellent protein source.

With 3.3 g total carbs (about 3.3 g net carbs) per 100 g, it fits low-carb and keto eating patterns in normal portions.

Nutri-Score weighs negatives (calories, sugar, saturated fat, sodium) against positives (fiber, protein) per 100 g. Points against come from calorie density (400 kcal); points in favor come from protein (90 g). Overall that places it in band B.

About 25 g of Pure Whey Protein Isolate equals 100 kcal. It is energy-dense, so small amounts add up quickly.

Yes — 400 kcal per 100 g makes it calorie-dense; a 50 g portion is already about 200 kcal.

Per 100 g it has 0 g sugar and 0 g fat (0 g saturated). Fat provides 0% of its calories, so portion size matters most here.