Whey Protein: Information at a Glance
Whey protein is a protein powder derived from whey and is one of the most widely used dietary supplements in sports nutrition. In this category, you'll find whey protein products in various forms – such as concentrate or isolate – as well as in different flavours and pack sizes. The products differ in terms of, among other things, protein content, lactose content, and composition. You can find the specific nutritional information on each product page.
What is whey protein?
Whey protein is a protein concentrate derived from whey, a by-product of cheese production. Whey naturally contains water-soluble proteins that are concentrated into powder form through filtration, drying, and further processing steps. Whey protein is one of the most commonly used protein powders in sports nutrition.
Production
During cheese production, milk separates into solid components (cheese) and liquid whey. This whey is filtered to reduce fats and carbohydrates (lactose), then pasteurised and spray-dried. The result is a fine, protein-rich powder, which is divided into different product forms depending on the degree of processing.
Forms of whey protein
Form | Protein content (approx.) | Features |
|---|---|---|
Whey concentrate (WPC) | 70–80% | Still contains small amounts of lactose and fat; milder processing |
Whey isolate (WPI) | 90%+ | More thoroughly filtered, with lower lactose and fat content |
Whey hydrolysate (WPH) | 80–90% | Protein is enzymatically pre-digested (broken down into shorter chains) |
Composition
Whey protein contains all nine essential amino acids, including the branched-chain amino acids (BCAAs) leucine, isoleucine, and valine. The exact nutritional value (protein, fat, carbohydrate, and lactose content) varies depending on the product form and manufacturer, and can be found on the product packaging or in the nutrition table.
How to use
Whey protein is usually mixed with water, milk, or a plant-based drink and consumed as a shake. It can also be added to dishes like porridge, baked goods, or smoothies. The manufacturer's recommended intake as indicated on the packaging is the authoritative guidance.
Suitable diets
- Low-lactose options: Due to more thorough filtration, whey isolate contains less lactose than whey concentrate.
- Vegetarian: Whey protein is derived from milk, making it suitable for a vegetarian diet but not for a vegan one.
- People with lactose intolerance or a milk protein allergy should check the ingredients list or seek medical advice.
Flavours
Whey protein powder is available in both neutral and flavoured versions, such as vanilla, chocolate, or cocoa.
Storage
Whey protein should be stored in a dry, cool place away from light, and kept tightly sealed after opening. The best-before date is indicated on the packaging.
This content provides general information about whey protein as a food or dietary supplement and does not constitute a health claim or a statement about its effects. Product-specific information (nutritional values, ingredients, allergens) can be found on the relevant product page.
Frequently Asked Questions About Whey Protein
Whey isolate undergoes an additional filtration step, resulting in a higher protein content and lower levels of lactose and fat compared to whey concentrate.
No. Whey protein is derived from cow's milk and is an animal product.
The powder is usually mixed with water, milk, or a plant-based drink in a shaker. The exact dosage depends on the manufacturer's recommended intake.
Whey concentrate typically contains small amounts of lactose, whereas whey isolate generally has a significantly reduced lactose content due to more thorough filtration. You can find the exact values on the product packaging.
Yes, the powder can be added to drinks, porridge, baked goods, or smoothies.
Whey protein is currently the most popular protein supplement. It has a high biological value, is easy to digest and has a perfect amino acid profile. Many athletes prefer whey protein for muscle building and regeneration over other proteins.
Here you will find everything you need to know about whey protein and information on how to choose the whey protein powder that is best for you.