#Whey#Protein#Guide

Whey Isolate vs Concentrate: which one should you buy?

Both come from milk, both build muscle. Here's how filtration, lactose and price actually differ.

4 min read · 1 Oct 2026

Whey protein is the liquid left over when milk is turned into cheese. After filtering and drying it becomes the powder you know — but how far it is filtered changes what you get.

Whey concentrate

Usually 70–80% protein by weight, with a little lactose and fat left in. It is the cheaper option and tastes creamier.

Whey isolate

Filtered further to 90%+ protein. Almost no lactose or fat, which makes it easier on sensitive stomachs.

Which one fits you?

Budget first: concentrate gives more protein per pound spent.
Lactose sensitive or cutting: isolate is worth the premium.
Either way: total daily protein matters far more than the type.