The 9 Best Casein Protein Powder to Buy in 2022 On Amazon

Casein is the less popular cousin of whey, but it’s a great choice. Today we will discuss the best casein protein powder on the market and the most popular picks.

We’ve done extensive research on casein protein and put it all together in the best casein protein powder you can buy in 2022.

Not only will we review 10 different products, but we’ll tell you exactly what to look for when buying your next casein powder, how it differs from whey protein, and the benefits of using it.

Finally, we will review frequently asked questions about Casein to help you make an informed decision about the right Casein product for you.

What is Casein Protein Powder?

Casein is a powder-based supplement used by a wide variety of athletes (but mostly bodybuilders) to support muscle growth and increase strength, while also preventing muscle breakdown while fasting.

Casein protein is basically the equivalent of fast-absorbing whey protein. While both are derived from milk, they are also the second most popular type of protein source. In fact, about 80% of the proteins in cow’s milk are casein and the remaining 20% is whey protein.

Is Casein Better Than Whey Protein?

It all depends on your individual needs – whey protein and casein protein have different effects. Whey is better for a post-workout protein supplement because it replenishes protein stores quickly, while casein is slower absorbed and better for pre-sleep protein.

Choose the one that best fits your schedule and goals.

What are the benefits of casein protein?

Despite its lower popularity, casein protein powder has quite a few unique benefits. We will consider some of the most important.

Rich in BCCAs

First of all, it contains all the essential amino acids, making it a complete protein and a great supplement to any diet.

The addition of BCAAs, and especially Leucine, makes it an excellent choice for preserving muscle mass and stimulating the production of new muscle tissues during recovery.

Peptides for Digestion

The peptides found in casein provide benefits ranging from positively tuning digestive health to mild immune benefits.

The nutritional profile of casein protein is quite different from whey and other options, promoting balanced recovery and overall health.

Slow Digest: Overnight Earnings

The determining factor of casein – for health and wellness – is its slow rate of absorption. This provides a longer dose of protein and prevents the breakdown of proteins during prolonged periods of fasting such as exercise or sleep.

Casein is soluble and slows down the digestion of all food in the body. This also means more regular digestion and a feeling of fullness throughout the day. This can also be very effective for reducing nausea and digestive stress that fast-absorbing milk proteins can bring.

Casein supplementation can reduce protein breakdown by up to 25% over a 7 hour period. This is great for maintaining muscle mass and continuously supplying amino acids to muscle cells.

Basically, your body will take a slow dose of protein for up to 8 hours after you’ve had your casein shake. That’s why many gym enthusiasts and professional athletes drink casein right before bed or before a longer fasting period.


Finally, casein protein will give you a more satiating effect than other supplements. This mostly happens because it is a slow-digesting protein.

As a result, you probably won’t feel hungry for several hours after taking it. This is helpful if you have trouble dieting or have trouble resisting carvings. Obviously, taking a casein supplement isn’t ideal if you’re trying to eat more!

Are There Any Side Effects of Casein Protein Powder?

As with any other supplement, there are some side effects that can occur if you are sensitive to casein or milk proteins. However, if you can drink milk without any problems, there is a very small chance that you will experience any casein side effects.

The most common side effects are associated with poor dairy tolerance: bloating, allergic reactions, heartburn, or a bad taste in the mouth.

Casein powder is known for its mediocre taste and aroma, so bad aftertaste is a fairly common complaint. No matter what natural or artificial additives they put in it, casein protein will never be something you consume for taste, just effects.

The 9 Best Casein Protein Powder to Buy in 2022

Note: Prices from Amazon and company websites are correct as of publication, but are subject to change.

We include products we think are useful for our readers. If you buy through links on this page, we may earn a small commission. Here’s our process.

1. Optimum Nutrition Gold Standard 100% Micellar Casein Protein Powder

The 10 Best Casein Protein Powder

4.7 out of 5 stars (7,836)

Rating: 4.5 out of 5.

Price: $93.99

Optimum Nutrition casein powder comes in a 55-serving container that will last approximately 4-6 weeks, providing 24g of protein in each serving.

The taste and aroma are good but not the best. The consistency is slightly thicker than you would get from other products when you use the same powder-to-water ratio. On top of that, it doesn’t mix very well if you just use your shaker: you might want to use an immersion blender to dissolve it all nicely.

The Gold Standard series has 2 versions of casein, the only main difference is the fat content. Natural flavor has 8 grams of carbohydrates, while regular flavor has only 3 grams (or 140 calories versus 120 calories). Therefore, if you are cutting calories, definitely choose the latter.

  • Good amount of BCAAs
  • Different macros split to choose from
  • Good taste & flavor
  • Shows quick results in beginners
  • Needs more water (thick consistency)
  • You’ll need a blender

2. Dymatize Elite Casein Protein Powder, Slow Absorbing with Muscle Building Amino Acids

The 10 Best Casein Protein Powder

4.7 out of 5 stars (5,825)

Rating: 4.5 out of 5.

Price: $52.49

There are 25 grams of protein in each serving, 50 servings per tub, and its very low-carb content—just 2 grams per serving.

Its calorie content is 120 calories per serving, which places this product on the lower end of what similar products offer.

Given the consistency of the product, you will probably need to prime your shaker to get a drinkable mix. That’s pretty much the only issue we’ve seen with this product: no bloating, great flavor, and aftertaste. Most importantly, many users have reported great improvement in both muscle size and strength after using the product consistently.

Ideally, you want to drink your casein protein powder before sleep or throughout the day if you plan to fast for more than 6 hours. Surprisingly, it blends quite well despite the thick consistency.

  • Great flavor and after taste
  • No bloating
  • Very effective
  • Dissolves better than competitors
  • Very thick consistency

3. Casein Protein Powder – Low Carb Protein Powder

The 10 Best Casein Protein Powder

4.3 out of 5 stars (1,718)

Rating: 4.5 out of 5.

Price: $27.96

This is probably one of the best casein protein powders on the market. It has a super high protein content. You’ll get 26 grams of protein and less than 1 gram of carbohydrates and fats in each serving.

As a result of this wonderful macro split, its calorie content is only 112 kcal per serving.

When it comes to taste and flavor, everything is pretty simple for Bulk Supplements: their products contain no additives and are not flavored. Surprisingly, this works great: it tastes a little like milk, but you can improve it a little more by throwing a banana in the blender or other fruit.

The consistency is relatively thin for a casein powder protein supplement, which is another benefit of this product. It mixes very well with water using a standard shaker and gets a creamy texture.

  • Plain simple unflavored protein powder
  • Just 112 kcal per serving
  • High protein content
  • Thin consistency & creamy texture
  • Not so great packing

4. Muscle Feast 100% Micellar Casein Protein

The 10 Best Casein Protein Powder

4.4 out of 5 stars (191)

Rating: 4.5 out of 5.

Price: $43.99

This is probably the lowest-calorie casein protein powder we’ve seen.

With only 86 kcal and only 0.4 grams of fat, this product is perfect for a strict weight loss diet. Protein intake is even more important when cutting, and this product provides 41 servings with just over 20 grams of protein each.

When you look at the consistency, you will get a very thin drink that mixes wonderfully with water or milk. Unflavored products have a somewhat plain flavor, but also contain no artificial flavors and are versatile for both cooking and mixing.

  • Low caloric content
  • Additives free
  • Good, thin consistency
  • Great satiety feeling
  • Dull taste

5. Naked Casein – 5LB 100% Micellar Casein Protein Powder from US Farms

The 10 Best Casein Protein Powder

4.6 out of 5 stars (432)

Rating: 4.5 out of 5.

Price: $99.99

Number six on our top 10 best casein protein list, it’s one of the most expensive products you’ll come across. This pack contains 76 servings of 100% Micellar casein protein.

Each serving is super high in BCAAs—almost 6 grams per serving—and has 26 grams of protein, zero fat, and zero sugar. This will take one serving of up to 110 kcal.

The manufacturer claims they use 100% US farm milk and have zero artificial ingredients in their products – a strong branding option. Naked Casein protein powder is also gluten and soy-free for allergy sufferers.

The only downside to this protein powder is that it mixes poorly and you get a pretty thick drink when mixed. While all you add is water, it’s more like a smoothie in terms of consistency.

  • 100% pure casein
  • US produced
  • High on BCAAs
  • Zero fats and carbs
  • Hard to mix well
  • Thick consistency

6. Ascent Native Fuel Micellar Casein Protein Powder

The 10 Best Casein Protein Powder

4.4 out of 5 stars (1,715)

Rating: 4.5 out of 5.

Price: $39.99

The best casein powder contains no artificial ingredients, tastes great, and is packed with top-quality protein. Ascent Native Fuel Micellar Casein Powder checks all the boxes. This delicious vanilla flavored protein powder is sweetened using monk fruit extract and contains 25 grams of protein per scoop and 11 grams of naturally occurring branched-chain amino acids.

Unlike many popular casein powders, protein powder contains zero artificial ingredients. It’s clean, has a minimal ingredient list, and is certified gluten-free. It’s easy to mix with your favorite liquid or mix into a pudding for a delicious, protein-packed treat. Athletes can rest assured that protein is safe, as it has the coveted Informed-Choice Trusted by Sport certification, which indicates that the protein does not contain prohibited substances.

  • Tested by informed sport
  • Free from gluten, soy, rBGH
  • No artificial ingredients
  • Contains milk and peanuts and tree nuts
  • A tad pricey
  • A little high in carbs
  • Gums might be tricky

7. Now Foods Sports Nutrition Micellar Casein

4.3 out of 5 stars (161)

Rating: 4.5 out of 5.

Price: $23.95

For an excellent casein protein with simple ingredients, choose NOW Sports Instantized Micellar Casein Powder. An unsweetened, slow-digesting complete protein contains only two ingredients: micellar casein and small amounts of sunflower lecithin, an emulsifier that reduces clumping and helps make a smooth drink. Each scoop is packed with 19 grams of protein and over 4,500 milligrams of branched-chain amino acids.

Top-quality, non-GMO casein has multiple quality assurances. It’s GMP Quality Assured, so you know it’s made in a world-class facility. It’s also Informed-Choice and Informed-Sport certified, meaning the supplement has been tested for prohibited substances and is manufactured using the highest quality processes to be safe for athletes or anyone looking to increase their protein intake. While not all casein products are safe for those with dairy allergies, NOW Sports Casein is soy, tree nut, corn, egg, and gluten-free.

  • Super high protein intake
  • Very tasty & good flavor
  • Good consistency
  • Gives a nice satiating feeling
  • A bit high on calories

8. Six Star Pro Nutrition Casein Protein Powder

4.6 out of 5 stars (2,532)

Rating: 4.5 out of 5.

Price: $17.80

Finally, number 10 on our best casein protein list is a Six Star product that is very high in carbohydrates. You’ll get 9 grams of carbohydrates, just 20 grams of protein, and less than 1 gram of fat in each serving, which has one of the most extraordinary macro compositions. This adds up to 120 calories in total.

A strong selling point of this powder is the price: It’s one of the cheapest options on the market, but it’s clear to see why.

On the other hand, we have seen positive reviews for the mixability and consistency of this product. The flavors are great – but that’s when you drink 9g of carbs at a time.

It tastes good—and probably one of the best on the list—but that also comes with the downsides of a reduced macro split. However, if you’re used to tasteless casein and want to prioritize flavor, this product may be for you.

Just be aware that taste comes at the expense of a weaker protein-to-carbon ratio!

  • Very inexpensive
  • Good consistency
  • Good flavor and after taste
  • Too many carbs
  • Low protein concentration

9. Legion Casein+ Vanilla Pure Micellar Casein Protein Powder

4.2 out of 5 stars (653)

Rating: 4.5 out of 5.

Price: $49.97

What sets casein powder apart from whey, pea, and other protein powders is its slow release and absorption. This is why many athletes use it before going to sleep and allow their bodies to work while resting. Evidence suggests that consuming casein before bed can improve resting metabolic rate and the ability to perform resistance exercise the next morning.

If you want to reap the benefits of casein at night, try Legion Casein+ Vanilla Pure Micellar Casein Protein Powder.

Legion Casein+ is made from non-GMO, grass-fed cow’s milk sourced from small, sustainable dairy farms in Ireland. It’s made with only natural flavors and sweetened with stevia, a zero-calorie sweetener. The low-carb, keto-friendly powder contains 26 grams of protein and 5.2 grams of branched-chain amino acids per scoop. Each scoop is free of added sugar and fat and contains only 2 grams of carbohydrates.

  • All natural
  • Very high in protein
  • Free range dairy
  • Contains soy
  • No digestive enzymes
  • Not the best tasting

What Should Be Considered While Buying Casein Protein Powder?

Just like any other supplement, the first thing you want to check is the label – and you need to know what to look out for.

Protein Concentration

A good protein powder should contain a high protein concentration (at least 80%). For example, you should get at least 24-25 grams of protein for every 30-gram scoop. Less than that will be less effective.


The next thing to watch out for is the BCAA content.

You want 5 grams or more per scoop. Some manufacturers summarize all the great BCAAs their products contain, while others just mention the amount. Ideally, you want the full list to be available in the tag.


Total calorie intake per serving is another important factor to consider.

Most casein protein powders are in the range of 100 to 140 kcal per serving. It is clear that most of the calories come from protein, but there are some products that will give you 30-40 kcal from fat and carbohydrates.

Dink Consistency

Consistency is an important consideration when choosing a purchase.

Casein protein powders have a thicker consistency than other protein supplements like whey or soy powders. If you know you have trouble drinking thicker shakes, it’s a good idea to find a product that mixes better with water.

Flavor and Taste

And then there’s the taste.

Casein and whey have very different flavors associated with different textures. The creamy, milder flavors of casein bring an entirely different experience.

If you don’t have a problem with that, that’s fine. But if you do, you’ll want to buy a flavored casein protein powder, preferably one that contains enough carbohydrates to sweeten the taste a bit.


Naturally, you want to control the price.

Casein can cost much more than other protein powders. Remember to compare the price to the number of servings in the pack – scoop size and price per gram of protein are important things to look out for.

How and When to Use Casein Protein Powder

There are two main different situations where you want to use casein protein powder. Both are time-sensitive.

First, if you’re on a low-calorie diet, you’ll want to add a casein protein supplement to your daily meal plan. Ideally, you want to take it right before bed to provide your body with enough amino acids to fuel your muscles throughout the night.

Second, if you’re following an intermittent fasting protocol, you want to use casein supplements. Drinking your casein protein shake just before your fasting period starts is ideal for preventing muscle loss.

As a result, you should use casein if your body will go more than 8 hours without any nutrients.

What are the Differences Between Casein and Whey Protein?

Although both casein and protein come from cow’s milk, there are a few very important differences between the two.

First of all, casein is a slow-digesting protein while whey is a fast-digesting protein. This means that casein will provide you with a steady and steady stream of amino acids for 7-8 hours.

On the other hand, when you use whey, you will see a huge increase in amino acids immediately after drinking your shake due to its absorption rate. Another difference between the two is that casein gives you a more satiating feeling due to its slower absorption rate.

Casein protein powder is known to reduce protein breakdown, preventing your body from becoming catabolic when you fast for longer periods of time. On the other hand, whey protein is known to increase the rate of protein synthesis, which is beneficial from muscle hypertrophy.

So, although there are many differences between the two, casein and whey are both good for muscle growth and should be viewed as complementary products. Tools in a toolkit, not competitors!

Final thoughts

To summarize this rather long post succinctly, here’s what you need to remember: Casein is needed when you’re not meeting your daily protein intake goal. Also, if you plan to fast for a long time, it is best to use it just before bedtime or at any time.

When purchasing casein protein powder, be sure to check the protein concentration level, total calories, and other macros. Finally, you may want to know what other users are talking about the product in terms of effectiveness, taste, aroma, and consistency.

Casein Protein Powder FAQ

Below is a list of some of the most common questions people have about casein protein powder. If you have questions of your own about casein, they are likely to be added below.

These will make it easier for you to decide if casein is the right supplement for you and whether you might consider getting your extra protein from another source.

Does Casein Protein Work?

Casein protein works just fine when used for its intended purpose. Of course, it won’t work if you use it for the wrong purpose: The choice of appropriate tools is how we affect these goals.

Therefore, casein will come in handy if you want to preserve muscle mass while fasting and mostly sleeping. It also works great if you want to limit the amount of food you eat, as it gives a strong feeling of fullness to your stomach.

But if you’re expecting to gain massive amounts of size and strength from casein, you’ll be disappointed: it’s the result of a versatile approach to diet and exercise, not just supplementation.

Is Casein Protein Safe?

Casein protein is found in many whole foods you eat every day. There’s no reason why it shouldn’t be safe for you: the only condition where it could become unsafe for you is your sensitivity to such proteins.

In these cases, you may experience side effects such as skin allergies, bloating, or heartburn.

Is Casein Protein Good for Weight Loss?

Protein intake in the form of casein powder has no direct effect on weight loss. However, it can indirectly help you lose weight by creating the feeling of fullness we mentioned above and also by providing a great overall dietary protein intake.

The use of casein is known to reduce cavities and inhibit the feeling of hunger. This will likely allow you to skip a meal, which will result in a lower calorie intake or cut back on snacking later in the day.

If you’re eating your regular meals every day and drinking a casein protein shake on top of that, don’t expect to see any weight loss anytime soon. No matter how healthy casein is, it comes with calorie counting and needs to fit into your diet.

Is Casein Protein Necessary?

From a nutritional standpoint, casein protein is not necessary for health reasons.

Is it necessary to supplement with a casein powder product? This will depend on how much protein you get from your meal. If you can’t eat enough food to meet your daily target protein intake, casein protein powder is a great choice.

Is Casein Protein Worth It?

From our point of view, casein protein powders are worth taking in three situations:

  • You can’t get enough protein from whole food sources
  • you have a fast metabolism or active lifestyle that quickly puts you in a catabolic state
  • You have long periods of fasting during the day

Which Foods Contain Casein Protein?

Most dairy products contain significant amounts of casein.

Obviously, milk sits at the top of the list, but you can get plenty of casein from yogurt, sour cream, butter, and (cottage) cheese. Beware, though: dairy alternatives like soy, coconut, or almond milk have no casein content.

Tuna, cereal bars, and chocolate also contain casein, but in much smaller amounts.

What Are Casein Protein Alternatives Before Bed?

Casein protein can be quite expensive, so if you’re looking to fuel your muscles while watching your budget, you may want to check out alternatives or inexpensive market alternatives.

Plain cow’s milk or any other milk-based product will work. Drinking a tall glass of milk right before bed will provide you with plenty of casein protein, but not as much as an obvious shake.

If you’re vegan, you should definitely avoid both casein and whey protein. But don’t worry, there are several options out there. First, you have vegan protein powders, then you have protein-rich plant-based products like soy, beans, or brown rice.

What Is The Best Casein Protein For Women?

Casein protein powders work exactly the same regardless of gender. The ones with the best protein content and the best taste/miscibility/value will be best for both sexes.

Does Casein Protein Contain Lactose?

If you are intolerant to the lactose in milk, using casein protein powder is a great alternative. Most casein protein powders are lactose-free or contain very, very small amounts of lactose, which most likely won’t trigger any digestive issues.

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