Best Casein Protein Powders of 2025

Optimum Nutrition Casein Powder is a slow-digesting protein designed to support muscle growth and repair overnight. Each serving offers 24 g of premium micellar casein, providing a steady flow of amino acids to your body while you sleep. Fortified with zinc and magnesium, it contributes to a healthy immune system and supports normal protein synthesis. With only 10 g of naturally occurring essential amino acids and low sugar, this protein powder is perfect for athletes and fitness enthusiasts looking to maintain muscle mass effectively.

PBN Micellar Casein is an excellent protein supplement designed to help you increase muscle mass. By incorporating this protein into your diet, you can support the maintenance of normal bones as well. This product provides a convenient source of micellar casein, which is known for its slow digestion, ensuring your body receives a steady supply of amino acids. This can be particularly useful for muscle recovery and growth, making it a great addition to your post-workout routine.

The PBN Micellar Casein is a premium protein powder available in a convenient 1 kg pouch with a delightful chocolate flavour. This product helps to enhance muscle recovery and growth, making it an excellent addition to your fitness routine. By incorporating it into your diet alongside other protein options, you can maximise your results. Made from high-quality ingredients, this supplement supports a healthy lifestyle, assisting you in reaching your fitness goals effectively. It's a versatile choice for those looking to improve their performance and manage their weight.

The Protein Works Micellar Casein is designed for those seeking a slow release protein shake that provides a sustained release of amino acids to your muscles while you sleep. Each serving delivers 24 g of premium protein, helping you to support muscle growth and recovery effectively. With only 0.4 g of fat and 0.6 g of sugar, it fits well into a balanced diet. Additionally, its versatility means you can easily incorporate it into home baking, smoothies, shakes, or oats for a delicious boost.

The Applied Nutrition Casein Powder is an ideal supplement to take before bedtime, providing a slow release of protein for up to seven hours. This feature ensures your muscles are refuelled while you sleep, aiding in recovery. Available in three delicious flavours—Chocolate, Strawberry, and Vanilla—you can enjoy a tasty treat that complements your training. The powder helps maintain and grow muscle without the need for late-night snacks, delivering essential Branched Chain Amino Acids for muscle repair. Preparation is simple; just mix two scoops with water or milk for an effortless protein boost.

PINK SUN Casein Protein is a certified organic micellar casein protein powder, derived from grass-fed, hormone-free cows' milk, offering a rich protein content of 79-80%. It is unflavoured, meaning you can enjoy it without any additives or sugars, making it an excellent choice for a clean diet. Being gluten-free and soy-free, this product fits well into vegetarian and wholefood diets. Its thick and creamy texture ensures a slow release of protein, perfect for muscle recovery and sustained energy throughout the day.

BioTechUSA Casein Protein is a high-quality protein powder that contains 22g of protein per serving. This makes it ideal for supporting muscle maintenance and growth, especially after workouts. Its slow-absorbing micellar casein source provides a steady release of amino acids, ensuring your muscles receive nutrients over an extended period. Being gluten-free and fat-free, it's suitable for various dietary needs, allowing you to enjoy your shakes or recipes without worry. With delicious flavour options, you can easily incorporate it into your baking or cooking.

The Bulk Casein Protein Shake is a slow-digesting shake designed to nourish your body overnight. Each serving provides an impressive 30 g of protein, helping you to recover and build muscle while you sleep. Formulated with essential nutrients like leucine, HMB, theanine, and lysine, it delivers 86% protein, ensuring you get the benefits you need. This delicious chocolate shake is perfect for serious trainers seeking a protein boost before bed, making it a convenient addition to your nightly routine.

Ekopura Casein Protein offers a 100% organic source of nourishment from grass-fed cows, ensuring you receive pure protein without any hormones, GMOs, or added sugars. With a remarkable 78% protein content, this protein powder aids in muscle recovery, retention, and building, making it ideal for your fitness goals. Its flavourless formula allows you to easily blend it into your favourite shakes, smoothies, or baked goods, maintaining the taste you love. Additionally, the high-quality ingredients provide all essential amino acids, supporting your overall muscle growth and recovery.

The Reflex Micellar Casein is a slow-release protein powder that provides 24g of protein per serving. Its unique formulation allows amino acids to be gradually released into your bloodstream, which supports muscle growth and maintenance. This protein powder takes up to six hours to digest, making it an excellent choice for consumption before bedtime, aiding in muscle recovery during the night. Additionally, it is made from whey protein sourced from grass-fed cows, ensuring a premium quality product rich in omega-3 fatty acids and CLA.