Quick answer: Whey isolate is filtered to be higher in protein and lower in carbs, fat and lactose, ideal if you are lactose-sensitive or calorie-conscious. Whey concentrate is more affordable and creamier, with slightly more lactose and fat. Both build muscle equally well.
The key differences
Isolate is ~90% protein with minimal lactose; concentrate is ~70-80% protein with a little more fat and lactose. For muscle-building, the difference is negligible, it is about digestion, calories and price.
Which to choose
Lactose-sensitive or watching calories? Isolate. Want creamier taste at a lower price? Concentrate. Our protein is built to mix cleanly either way.
Bottom line
Both are effective. Let your stomach and budget decide, see best whey protein for women UK.
Frequently asked questions
Is whey isolate better than concentrate?
For muscle, they are equally effective. Isolate is leaner and lower in lactose; concentrate is creamier and cheaper.
Which is better for lactose intolerance?
Whey isolate, it is filtered to contain far less lactose than concentrate.
Is isolate worth the extra cost?
Only if you are lactose-sensitive or want the leanest macros. Otherwise concentrate offers great value.
Related reading
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This article is general information, not medical advice. If you are pregnant, breastfeeding, or have a health condition, check with your GP or a registered dietitian before changing your protein intake or supplements.