What types of whey protein are there and what are the differences?

September 30, 2025

What is whey protein and what forms are there?

The most well-known whey protein forms are whey concentrate, whey isolate, and whey hydrolysate. The highest quality of all whey proteins is whey protein isolate, also known as whey protein isolate in the bodybuilding scene. This isolate is known above all for its high-quality biochemical value and is popular with numerous bodybuilders. It belongs to the best protein sources on the supplement market. Whey protein isolate contains a proportion of 80% to 92% protein. Whey protein isolate is particularly popular among bodybuilders and "protein experts" due to its very low fat content and few carbohydrates. Whey protein isolates also exhibit an excellent amino acid profile (including, above all, essential amino acids for bodybuilders). Through a special manufacturing process, whey protein isolates are particularly tasty and of unbeatable quality. There are rarely isolates that have such a high protein content while containing many important amino acids. The solubility of whey protein isolate is also excellent. The characteristics of whey protein isolates include in particular muscle building and muscle maintenance, a low carbohydrate content with no superfluous sugar, a very low fat content (under one percent), and the substance's good solubility. Bodybuilders should by no means forgo whey protein isolates, as they need the amount of protein for muscle building and maintenance. It is one of the best protein sources and should definitely be taken during the preparation phase. Furthermore, the isolates are suitable as a supplement to every meal. It should also be used as a post-workout shake, i.e., taken after training. Proteins are the building blocks of muscles and should always be consumed regularly throughout the day to optimally supply your muscles at all times.

What is whey protein concentrate?

Whey protein concentrate, or WPC for short, represents the most affordable and classic form of whey protein powder. The product is obtained through whey filtration. The price of manufacturing, production, and processing ensures high demand. The ratio of nutrients in whey protein concentrate is about 72-82% protein, 6-9% carbohydrates, and 5-8% fat.

Advantages of whey protein concentrates:

The most well-known standard form of whey
Small but moderate fat content (can vary between 1-5g per serving)
Small carbohydrate content (can vary between 1-15g per serving)
Good price-performance ratio (affordable)
Not lactose-free
Depending on calories per serving, also well-suited for a diet
Usually the best-tasting protein form

What is whey protein isolate?

Whey Protein Isolate is also produced via microfiltration and has the advantage that a protein content of up to 95% can be achieved in this way. Fats and carbohydrates, on the other hand, are reduced to such an extent that Whey Protein Isolate also has fewer calories than the concentrate and is therefore higher quality. Due to the drastic reduction of lactose, Whey Isolate can also be safely consumed by people with lactose intolerance.

Benefits of Whey Protein Isolates:

High protein content
Very low fat content (usually 0-1g per serving)
Very few carbohydrates (usually 0-1g per serving)
Optimal: before/after training, in the morning after waking up, and in the evening before bedtime
Ideal for dieting
Naturally lactose-free (!)
Usually more expensive than concentrate & hydrolysate
Absorbed even slightly faster than Whey protein concentrate
Best protein form of Whey

What is Whey Protein Hydrolysate?

During hydrolysis, protein chains are broken down to obtain Whey Hydrolysate. Hydrolysis ensures better absorption of the protein in the human body and enables very high degrees of purity. In terms of taste, hydrolysate is somewhat more bitter and is therefore often mixed with concentrate and isolate blends.

Benefits of Whey Protein Hydrolysates: