Signature Casein Signature

Signature Casein

25g of Slow-Release Micellar Casein
Muscle Growth and Recovery While You Sleep or Between Meals*
8.9  out of 10  (27 Reviews)
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Product Overview Signature Casein

Casein is naturally rich in amino acids like leucine and glutamine. Because of its slow-release nature, casein provides a steady stream of these amino acids to support muscle growth and recovery over several hours.* All of this makes casein the perfect nighttime protein! Enjoy it as a shake or pudding an hour before bedtime or during long stretches between meals. Casein


Building muscle isn’t just about consuming enough protein: It has to be the right protein. Whey protein digests quickly and is ideal for stimulating muscle protein synthesis after your workout. Casein, on the other hand, digests slowly and inhibits muscle protein breakdown.*

When you ingest whey protein, the amount of amino acids in your bloodstream rapidly peaks, then declines. Ingestion of casein causes a slow and steady increase of amino acids in your blood, supporting muscle recovery over a longer period of time.*

A signature is a promise. A symbol of your identity. Your mark on the world. In 1999, was founded on a single promise: Trust. It’s who we are and it’s in our blood. Our Signature line is built on the same promise. Every product is no-BS, transparent, filler-free, and formulated with effective doses of research-backed ingredients you can trust. We create the highest quality supplements, so you can focus on leaving a mark of your own.


Signature products are formulated with high quality ingredients at effective doses that we’re proud to share with you. We don’t hide anything in a “proprietary blend”, so you always know exactly what you’re putting into your body.


An effective dose is the amount of an ingredient that has been shown to deliver results. Some supplement brands add a sprinkle of an ingredient just so they can say it’s in the product. Signature supplements always include enough to get the job done.


Trendy, flash-in-the-pan ingredients come and go. But time-tested, gym-proven ingredients are what you need to help you achieve your fitness goals. That’s what you’ll find in Signature products because that’s what works.


Ratings & Reviews

Signature Casein
Overall Rating
27 Ratings
Verified Buyer Rating
24 Ratings
Average Flavor Rating
2 Flavors
Top Rated Flavor
By clicking the button above, you agree to entering the Reviews section. Products in the Store are not intended to diagnose, treat, cure, or prevent any disease.
Dec 26, 2019
Verified Buyer
  • 10 Vanilla

First time trying BB's brand of casein. Really good quality, and flavor. I'll definitely be buying again. BB always has amazing customer service,fast shipping, great prices, and amazing sales. I highly recommend them and their brand of products.

Sep 13, 2019
Verified Buyer
  • 10 Vanilla

Taste is good with water, but great with milk! Have a serving everynight after a hard workout.

Sep 04, 2019
Verified Buyer
  • 8 Vanilla

This is my before bed protein and the texture is thick and creamy. I mixes well but has that milkshake like texture and mouthfeel. The flavor is good and next excessively sweet. When this tub is gone I'll try the chocolate.

Jun 30, 2019
Verified Buyer
  • 10 Chocolate

Love this product the flavor is great and I feel great in the morning.

Jun 19, 2019
Verified Buyer
  • 10 Vanilla

This protein has great flavor, and great quality to it. It dissolves easily with water without leaving lumps! Definitely buying again.

Jun 18, 2019
Verified Buyer
  • 4 Chocolate

I've never tasted worse chocolate flavor than this. Even mass gainers may taste as good or better. Thanks for deleting My former review which stated how bad the taste is. Well it's your signature product so I get it but it's very mischievous to delete a very bad review.

May 24, 2019
  • 10 Chocolate

Best tasting casein powder I’ve ever used! Not only is it the best tasting, it is by far the best, easiest mixing! Such a smooth taste I’ve never had with any other casein powder!

May 21, 2019
  • 9 Vanilla

Tastes great. A bit gritty so make sure you use plenty of water.

May 01, 2019
Verified Buyer
  • 8 Chocolate

Good protein for slow overnight digestion. I take it before bed so my body is processing protein all night. I gave it a 8 because the flavor is very good but the directions are misleading. According to the directions you need 6 ounces of water but that turns the powder into a paste. I always add AT LEAST 8 ounces of water for a single scoop. In smoothies when I add bananas or peanut butter its best to add more water. Other than that I highly recommend this protein powder, just remember to add more water than the directions say you need!

Apr 07, 2019
Verified Buyer
  • 10 Chocolate

I was shocked by how good this was for the price. Casein can be pretty gritty and thick in most cases, but after deciding to try this instead of another jug of ON's, I was blown away by how much better this was, and up until now ON Casein had been the best I'd found.

Apr 01, 2019
Verified Buyer
  • 1 Chocolate
  • 1 Vanilla

I am not very picky with protein flavors and tastes and everything, BUT THIS STUFF IS NASTY!!!!! Like straight up makes me sick to my stomach when I drink it. I just started using it, and I'm sure it will get the overall job done since its just protein, BUT DANG IT TASTES DISGUSTING! Will not reorder anytime soon.

Mar 30, 2019
Verified Buyer
  • 9 Chocolate

First time casein user. Researched the ingredient profile of many different brands and landed between ON and this. Ended up pulling the trigger on this one due to lower price. I’ve been using it for a little over a month every night before bed. I had hit a plateau in most of my lifts and during that time (correlated or coincidental I don’t know) I have increased my 1RM squat from 375 to 415. Either way, I like the product, taste is probably as good as you are going to get for casein.

Mar 29, 2019
Verified Buyer
  • 10 Vanilla

Probably the best casein I have tried. Thick and creamy.

Feb 16, 2019
Verified Buyer
  • 7 Vanilla

The first time I tried this, I thought it was a bit rougher to drink down than whey protein but, on the flip side, it's easy to get used to. The flavor is decent and adding a slow release protein helps give support throughout the day.

Jan 29, 2019
Verified Buyer
  • 10 Vanilla

Tastes great, I mostly use for my protein pudding/ protein cookie dough. can also just be mixed with water to drink I guess like most normal people do :P

1 Size
4 Lbs.
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Was:  $49.99
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Price: $34.99  ($0.64 / Serving)
Flavor Rating: 7.9
Muscle Growth and Recovery While You Sleep or Between Meals*

What's in Signature Signature Casein

Serving Size: 1 scoop (33g)
Servings Per Container: About55
Amount Per Serving
Calories 120       
Calories from Fat 5       
% Daily Value *
Total Fat 1 g 2%
Saturated Fat 0 g 0%
Trans Fat 0 g       
Cholesterol 20 mg 7%
Sodium 210 mg 9%
Total Carbohydrate 3 g 1%
Dietary Fiber 2 g 8%
Sugars 0 g       
Protein 25 g 50%
Vitamin A 0%
Vitamin C 0%
Calcium 50%
Iron 4%
* Percent Daily values are based on a 2,000 calorie diet. Your Daily Value may be higher or lower depending on your calorie needs.
Micellar Casein, Cocoa processed with alkali, Inulin, Natural and Artificial Flavor, Salt, Sunflower Lecithin, Acesulfame Potassium, Sucralose, Gum Blend (Cellulose Gum, Xanthan Gum, Carrageenan).
Contains Milk.

Directions For Signature Casein: Add one scoop to 8 ounces of cold water or milk and mix thoroughly. Use more or less liquid to modify the consistency to your liking. Enjoy at bedtime or between meals.

Warnings: Use this product as a food supplement only. Do not use for weight reduction.

* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.