Best Casein Protein in 2021

Casein protein is a brilliant supplement for those who want to lose weight and gain muscle. This supplement works just as well as whey protein, it simply has a different function to get it there.
There are some things that you cannot do on your own and building muscle is one of them. The best casein protein will help you recover quicker after a workout and keep you feeling fuller for longer.
10 Best Casein Protein Powders
- OPTIMUM NUTRITION GOLD STANDARD Micellar Casein Protein Powder
- Naked Casein Micellar Casein Protein Powder
- Six Star Elite Series Casein Protein Powder
- Dymatize Elite Micellar Casein Powder
- MusclePharm Combat Casein Supplement
- Bulksupplements Casein Protein Powder
- MET-Rx Metamyosyn Casein Protein Powder
- PROMIX Unflavored Micellar Casein Protein Powder
- Ascent Native Fuel Micellar Casein Protein Powder
- Universal Nutrition Casein Pro Powder

OPTIMUM NUTRITION GOLD STANDARD Micellar Casein Protein Powder
- Slow-release
- Naturally occurring BCCAs
- 24 grams of protein
- Good range of flavors
- Effective weight loss supplement
This gold standard 100 casein protein supplement has a slow-release formula. Each serving will deliver 24 grams of slow-release casein protein as well as five grams of naturally-occurring BCAAs. This supplement is also a great source of calcium. This gold standard 100 casein is best used in between meals or before sleep for the best results.

Naked Casein Micellar Casein Protein Powder
- 100% micellar casein protein
- Made in the US
- Slow digesting formula
- Contains amino acids
- Provides maximum recovery
This micellar casein protein powder is 100% protein and does not contain any additional hormones or artificial ingredients. This casein protein is made in US farms and it is full of amino acids, natural BCAAs, and clean protein to provide the best results. This is an unflavored supplement.

Six Star Elite Series Casein Protein Powder
- A high percentage of protein
- Effective for weight loss
- Releases amino acids
- Natural BCAAs
- 100% casein with each serving
This is a excellent casein protein powder as each serving provides 24 grams of protein and 4.9 grams of BCAAs. This casein protein is more effective than regular whey supplements as it contains a higher percentage of protein per serving. This supplement can be taken before bed, as it will release amino acids into your system overnight.

Dymatize Elite Micellar Casein Powder
- Provides overnight repair
- 100% casein
- Gluten-free
- Four flavors
- Safe to consume
This casein powder is one of the best for overnight sustained muscle growth and repair as it contains a high percentage of protein per serving. Each serving of 25 grams will provide 100% micellar casein, five grams of BCAAs, and 2.3 grams of L-Leucine. This casein is safe to consume as it has been tested for banned substances. It is also gluten-free.

MusclePharm Combat Casein Supplement
- Slow-digesting
- Ideal nighttime supplement
- Safe to consume
- Certified by Informed-Choice
- Contains amino acids
This 100% micellar casein powder contains slow-digesting protein and amino acids that can repair your body as you sleep. This is a safe protein powder as it has been tested for banned substances and has been certified by Informed-Choice. This casein powder is easy for the body to digest.

Bulksupplements Casein Protein Powder
- Clean protein
- Amino acids included
- Ideal for muscle repair
- Good source of calcium
- High levels of casein
This casein powder contains clean and pure protein supplements so it can provide the best results in both weight loss and muscle repair. This supplement is also a good source of calcium and has a rich amino acid profile. It has high levels of casein to offer higher protein synthesis and, therefore, more noticeable results.

MET-Rx Metamyosyn Casein Protein Powder
- Mixes casein and milk protein
- A high percentage of protein
- Highly effective
- Good for weight loss
- Various flavors available
This milk protein also contains casein to provide support and energy to your muscles during and after a workout. This casein supplement is easy to use and mixes with other ingredients well. There are lots of benefits to using this casein supplement, including more energy, quicker recovery times and better muscle growth.

PROMIX Unflavored Micellar Casein Protein Powder
- Low-calorie
- No fat or carbs
- Slow-release
- High protein levels
- Ideal for overnight
This casein supplement is a low-calorie one that can be taken at nighttime. It has been put through the highest testing standards to ensure that it is safe to consume. Each serving contains 0 grams of fat and carbs and 25 grams of casein. It is slow absorbing, so it will increase muscle growth and decrease recovery time overnight.

Ascent Native Fuel Micellar Casein Protein Powder
- Slow-digesting
- Overnight recovery
- Amino acids included
- Noticeable results
- All-natural ingredients
This is a slow-digesting protein that can be consumed before bed to help you recover overnight. It contains no artificial ingredients and 25 grams of protein per scoop. The BCAAs and amino acids help improve protein synthesis for noticeable results. This protein is gluten-free and certified by Informed-Choice.

Universal Nutrition Casein Pro Powder
- Ideal for intensive training
- Renowned brand
- High levels of protein
- Easy to use
- Sweet flavor
This protein supplement is ideal for athletes and intensive training as it is effective at repairing muscles and can provide energy. This is a renowned brand that you can trust and has been in operation since the early 1980s. This supplement contains high levels of casein for effective workout aid.
Casein Powder Buyer's Guide
The Best Casein Powder: OPTIMUM NUTRITION GOLD STANDARD Micellar Casein Protein Powder
This is a gold standard supplement that is slow-release. It contains high levels of casein and has a good amino acid profile.
When Should I Take Casein Protein?
Casein can be taken at any time during the day, but it is recommended that you take it in between meals as it can act as an appetite suppressor. This is why it is ideal for weight loss.
The best time to take casein protein is actually before sleep. Most of the products in this review are slow-release and contain amino acids. When they are taken at night, the protein and acids will work together to repair your muscles and make them bigger.
Taking casein before sleep gives it plenty of uninterrupted time to get to work. This is also the time when our body naturally repairs itself and casein can really improve this process.
Casein Vs. Whey
It is important to note that both of these protein supplements are derived from milk. They can also both be used in the same way, as in most cases, they will need to be mixed with water before they can be consumed.
Each supplement has its own benefits, so you will need to think about your long-term goals when it comes to your body and fitness in order to see which is the best one for you.
Whey protein is claimed to be better for building muscle, as it can be absorbed quicker by the body. This kind of protein also contains a higher amino acid profile.
This does not mean that casein protein is not effective at building muscle, but it does come with other benefits that it is better at than whey. This includes aiding the digestive and immune system so you will feel better and fitter. Casein is the best supplement for those who want to lose weight and gain muscle.
Both whey and casein are designed to be supplements to an already healthy, balanced and active diet. This means that you will not see results from either of these proteins unless you are putting the work in yourself.