What Is Protein Powder Made Of?

Protein powder is one of the most popular and widely used supplements in the world of fitness and nutrition. Whether you're looking to build muscle, support recovery, or increase your daily protein intake, protein powder offers a convenient and effective solution.

But have you ever wondered what protein powder is actually made of? In this blog, we break down the ingredients, sources, and types of protein used in these supplements—and highlight some of the top products available at Nutrition Now.

The Basics: What’s Inside Protein Powder?

At its core, protein powder is made by extracting protein from whole food sources. These sources can vary, which is why you'll find whey, beef, soy, pea, and other types of protein powders on the market.

The process typically involves removing most of the fats and carbohydrates, leaving behind a concentrated source of protein. The final product is then flavoured and may include other ingredients like:

• Natural and artificial flavours

• Sweeteners (like stevia or sucralose)

• Enzymes (to improve digestion)

• Thickening agents (like xanthan gum)

Let’s look at the most common types and what they’re made from.

Whey Protein

Whey protein is the most common form of protein powder. It's derived from milk during the cheese-making process and is known for its fast absorption and complete amino acid profile.

Top whey protein powders include:

Optimum Nutrition Gold Standard 100% Whey 900g

A bestselling, trusted formula with 24g of protein per serving.

Per4m Whey Protein 2.01kg

UK-made with delicious flavours and a high protein yield.

NXT Pure Whey Deluxe 510g

A smaller tub, ideal for trying out NXT's premium whey formula.

Whey comes in different forms:

• Concentrate – retains more of the natural nutrients.

• Isolate – filtered to remove more fat and lactose.

• Hydrolysate – pre-digested for faster absorption.

Beef Protein

Beef protein powders are made by hydrolysing beef, usually from lean meat, to create a highly digestible and lactose-free supplement. They’re a great alternative for those who are dairy-intolerant or looking to switch things up.

For example:

NXT Beef Protein Isolate Samples (Summer Six Pack)

Let you try a variety of flavours without committing to a large tub.

This type of protein is known for its naturally high collagen and amino acid content, supporting muscle growth, joint health, and recovery.

Plant-Based Proteins 

While this article focuses on whey and beef options, it’s worth noting that many plant-based powders are made from peas, brown rice, hemp, or a blend of sources to create a complete amino acid profile.

If you’re vegan or prefer plant-based nutrition, Nutrition Now also offers a selection of plant-based protein powders.

What Else Is Added?

Beyond the protein itself, most powders include:

• Flavourings – chocolate, vanilla, salted caramel, and more.

• Sweeteners – many products use calorie-free options like sucralose or stevia.

• Digestive enzymes – like lactase, papain, or bromelain to reduce bloating and help your body process the protein efficiently.

These ingredients help make the powders not only effective but also enjoyable to consume.

Final Thoughts

So, what is protein powder made of? The answer depends on the type, but at its core, it’s a concentrated source of high-quality protein derived from milk, beef, or plants—enhanced with flavour, digestibility, and convenience in mind.

Whether you’re a beginner looking to build strength or a seasoned gym-goer focused on recovery, protein powders can play a valuable role in supporting your fitness goals.

Popular products like Optimum Nutrition Gold Standard 100% 5lb, Per4m Whey Protein, and NXT Pure Whey Deluxe are just a few examples of top-tier formulas trusted by athletes across the UK and Ireland.

Ready to find your perfect protein? Explore the full range of protein supplements at Nutrition Now and take the guesswork out of your nutrition.