Skip to product information
All /Grass-Fed Casein Protein

Grass-Fed Casein Protein

Grass-Fed Casein Protein

Grass-fed micellar casein protein powder delivers sustained-release amino acids, enhancing muscle growth, recovery, and promoting satiety.

No Artificial Sweeteners
No Artificial Coloring
No Artificial Preservatives
2 Flavors Available:
 

Flavor:

Frequency:

Free Shipping
View full details
Grass-Fed Casein Protein

Grass-Fed Casein Protein

Third-Party Testing

We believe trust is earned through transparency. That’s why we provide full access to our third-party test results, so you can feel confident in what you’re taking. View all third-party tests.

 

Casein is the ideal evening protein powder for gym-goers, bodybuilders, and active individuals. Transparent Labs Grass-Fed Casein protein powder features 25 grams of instantized micellar casein from grass-fed cattle in every serving. Naturally flavored and sweetened with stevia, this instantized casein protein powder is a treat for the tastebuds, mixes easily, and contains no added sugars, fillers, or artificial junk.

 
Chocolate
 

Orders in the US over $99 ship free.

Once your order has shipped out from our fulfillment center, you will receive a Shipping Confirmation email. If you selected a tracked shipping method, you will receive your tracking information, along with the necessary steps to track your order, within this email. Please note, orders are generally fulfilled same day or next business day.

Click here for the full shipping and delivery guide »

45 Day Satisfaction Guarantee

If you are not satisfied with your product, we will offer you a full refund or store credit for the value of the item within 45 days of delivery.

Click here for the full refund policy »

Why Use Grass-Fed Casein Protein

Micellar casein is a sustained-release protein source that supports muscle recovery, growth, and appetite control for upwards of eight hours.

Support Overnight Muscle Growth & Recovery

Slow-digesting casein protein provides muscles with essential amino acids for extended periods, significantly enhancing recovery overnight.

Long-Lasting Satiety

Micellar casein promotes prolonged fullness and appetite control, ideal for overnight use or prior to fasting periods.

Complete Amino Acid Profile

High-quality micellar casein protein is rich in essential amino acids, including leucine, essential for muscle protein synthesis and growth.

Clean, Grass-Fed Formula

Grass-fed, hormone-free protein source without artificial ingredients, fillers, or GMOs, supporting a healthy, clean lifestyle.

Key Ingredients

Our formulas are made with clean, natural ingredients, with clinically-validated dosages to support health and performance.

Grass-Fed Micellar Casein Protein

29.7 g
Casein is the protein counterpart to whey in dairy milk. In micellar form, casein digests slowly and steadily releases amino acids into the bloodstream, supporting overnight muscle recovery and satiety.

Grass-Fed Micellar Casein Protein

29.7 g

Casein protein has come to be known as the “nighttime protein powder” due to its protracted absorption compared to other protein sources. After consuming micellar casein protein, it is emulsified with gastric juices to form a viscous gel-like substance that slowly moves through the digestive tract and releases amino acids into the bloodstream for up to eight hours [1]. Thus, micellar casein tends to be more satiating and suited to nighttime use than rapidly absorbed protein sources.

Casein protein is highly effective in promoting muscle growth and recovery due to its high leucine content and complete amino acid profile [2]. Casein protein also supports bone health thanks to its high calcium content, essential for strong bones and teeth.

/

Complete Your Stack

Pair Grass-Fed Casein Protein with these products for a complete foundational stack.

  • This casein is far superior to any other highly rated casein with all natural ingredients
  • This is the best and cleanest casein protein I've ever had. Worth every penny.
  • The flavor is simply rich, dark Cocoa with just enough sweetener. It's perfect!
  • 5 stars: 169 (70%)
  • 4 stars: 33 (14%)
  • 3 stars: 27 (11%)
  • 2 stars: 6 (2%)
  • 1 star: 6 (2%)
C
Caden C.
Chocolate
Superior Product

This casein is far superior to any other “highly rated” casein. This uses all natural ingredients, mixes so easy and leaves no grainy, artificial aftertaste. This, along with Transparent Labs Mass, has added 6 pounds of lean muscle in just over 5 weeks and has been an integral part of maintaining my strength and weight during my college cross country off-season training program. Thank you Transparent Labs!!

M
Michael L.
It lives up to its “filling” potential.

This casein product, like others I have tried, certainly lives up to its potential to maintain fullness for an extended period of time; however, the reason I only gave it three stars is due to its very gritty texture (regardless of being mixed with either milk or water at various temperatures). It tastes great like the other TL proteins, but the texture is less than desireable.

S
Sean W.
The Only Protein Powder You Will Ever Need

This is a magnificent product that helps me achieve my daily protein intake and tastes really good.

J
John

It has been great!

Z
Zachary

Best protein product ever!!!

J
Jason G.
Chocolate
Great product

Great product . My bedtime snack that is easy on the stomach unlike other casein powders

E
Elaynea R.
Chocolate
Love it!

Love this for my evening treat! Mix this with the chocolate collagen and some pb powder and you have yourself a little dessert!

A
Anonymous
Fantastic taste and results

Fantastic taste. I use it as an after dinner desert that keeps me satisfied all night when I cut. However, I am not sure why it only comes in chocolate, they are missing out on opportunity with other flavors. I am not a chocolate fan, but this one is tolerable.

M
Michael

Tastes great and is making a difference for me.

S
Sheila

Love it. Great flavor.

W
William K.
Chocolate
Your Money's Worth

Great product, with exceptional flavor profile.
Nice after supper drink in lieu of carb dense desserts .
I drink mine about an hour before bed.
Breaks down slowly & stays with you.

A
Andrew

Perfect 👍🏻👍🏻

D
Douglas

Great company to purchase supplements

J
Joanne V.
Chocolate
Easy use, dissolves fast in water, tastes great

Easy use, dissolves fast in water, tastes great. I feel so much better.

J
Joseph B.
Chocolate
Love your casein powder

Love your casein powder. You are my go to for all health related supplements.
Use your powder products exclusively for my resistance training…I’m 71 yr old male. Thanks for the quality products.

M
Miguel

Gre a t tasting and easy on the body.

A
Anonymous
Chocolate
Great product

Great taste, helps me feel full through the evening to avoid snacking, and slow release protein helps me feel better the day following workouts.

H
Hector

Funny taste, not chocolate.

G
Georges

The chocolate taste soo good

N
Nostalgickeys
Primo Casein!

This is the primo Casein protein powder. It is the best tasting casein that I've had, and I can also tell a difference in how satiated that it makes me feel. Totally worth the extra dinero that you pay for it.

A
Anonymous
Chocolate
A Slow Absorption Protein Without Artificial Ingredients

I wanted a slow absorption protein without artificial ingredients. This chocolate flavor tastes great and keeps me satiated for several hours.

S
S.K.

Always the best. Clean protein to help reach your goals. It tastes amazing without the garbage.

R
R.G.

Excellent Flavor

A
Andrew

Perfect 👍🏻👍🏻

S
Scott M.
Chocolate
This is the best and cleanest casein protein

This is the best and cleanest casein protein I’ve ever had. There’s no clumping and the terrible texture and taste like most competitors. I was skeptical at first because the price was a little jarring but it’s worth every penny.

A
Anonymous
Best casein even though it’s expensive

Mixed well. Lightly sweetened. Wish there was a Vanilla version

C
Chris
Very tasty

It is better than most. It tastes rich and delicious. I wish it wasn't out of stock for that long though. I've been trying to buy it for about a month now and still out of stock.

S
SOOJIN
맛있고 인공감미료 없는 프로틴!!

정말정말 맛있습니다. 다른 프로틴 쉐이크에는 인공감미료가 들어가고 당이 0퍼센트라고 하는데 그런건 먹고싶지 않아서
이 단백질 쉐이크로 시켜봤는데 맛도 넘넘 훌륭하고 맘에듭니다!!
놀라운 초콜릿밀크맛 넘맘에 들어요!!

B
B F.
My favorite Casein

Having had quite a few casein protein powders from various brands, this one hands down is my favorite. I look for powders only sweetened with stevia and/or monk fruit, which these products all do I believe (no artificial sweeteners or sugar alcohols for me). But the real treat is is the taste. It mixes well, better than most, and the flavor is simply rich, dark Cocoa with just enough sweetener. No weird flavor notes or anything else. Its perfect!

C
Cole
Not perfect for me

To me it's chalky, maybe im not use to powders anymore. every time I take this I have to immediately rinse my mouth out and I brush my teeth. Flavors nice though! :)

C
Christopher D.G.
Amazing

This Casein tastes great its clean and filling. Nothing else like this on the market!

How To Use

1

Step 1 – Add Powder

Combine one scoop of Transparent Labs Grass-Fed Casein protein powder with 8-12 oz of water, almond milk, or your favorite beverage in a shaker cup.
 
2

Step 2 - Shake Vigorously

Mix the powder and liquid by shaking vigorously until fully dissolved.
 
3

Step 3 – Consume Daily

Drink daily, ideally 30-60 minutes before bedtime, or as needed to help meet your protein requirements and support muscle recovery.

Frequently Asked Questions

Micellar casein digests much more slowly than whey, providing a steady release of amino acids for hours. It’s especially great before bed to support overnight recovery and help keep you feeling full longer.

 

Definitely. It’s a solid choice anytime you need sustained protein and prolonged fullness—like between meals, during busy days, or when you know you’ll go hours without eating.

 

Most people tolerate micellar casein well, especially when it’s high-quality. If you’re sensitive to dairy, just pay attention to how your body responds.

 

Yes! While casein naturally has a thicker texture than whey, our formula mixes smoothly with water or milk—no clumps, no grit.

How is casein different from whey?

Micellar casein digests much more slowly than whey, providing a steady release of amino acids for hours. It’s especially great before bed to support overnight recovery and help keep you feeling full longer.

Can I use micellar casein during the day?

Definitely. It’s a solid choice anytime you need sustained protein and prolonged fullness—like between meals, during busy days, or when you know you’ll go hours without eating.

Will casein upset my stomach?

Most people tolerate micellar casein well, especially when it’s high-quality. If you’re sensitive to dairy, just pay attention to how your body responds.

Does it mix well?

Yes! While casein naturally has a thicker texture than whey, our formula mixes smoothly with water or milk—no clumps, no grit.

Compare Protein

Best Seller
Grass-Fed Whey Protein Isolate
4.71

Grass-Fed Whey Protein Isolate

Best for most people and everyday use

28g protein per scoop

120-150 calories per scoop

0-3g carbs per scoop

30 Scoops (Net Wt. 989g)

Best Seller
Mass Gainer
4.7

Mass Gainer

Best for bulking

26-27g protein per scoop

365-375 calories per scoop

53-55g carbs per scoop

30 Scoops (Net Wt. 2910g)

Best Seller
Grass-Fed Collagen
4.71

Grass-Fed Collagen

Great for skin health, anti-aging, and extra protein

20g protein, 22g collagen hydrolysate per scoop

90 calories per scoop

3g carbs per scoop

30 Scoops (Net Wt. 1050g)

Best Seller
Pea Protein Isolate
4.52

Pea Protein Isolate

Organic whey-free, plant-based protein

28g of protein per scoop

150-160 calories per scoop

3g of carbs per scoop

30 scoops (Net Wt. 1191g)

Grass-Fed Casein Protein
4.46

Grass-Fed Casein Protein

Slow-absorption nighttime protein

25g slow-absorption protein per scoop

120 calories per scoop

4g carbs per scoop

30 Scoops (Net Wt. 1050g)

/