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Grass-Fed Whey Protein Isolate

Grass-Fed Whey Protein Isolate

This is as clean as whey protein gets, sourced exclusively from grass-fed cattle with absolutely no artificial sweeteners, food dyes, or fillers.

No Artificial Sweeteners
No Artificial Coloring
No Artificial Preservatives
Gluten-Free and Non-GMO
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22 Flavors Available:
 

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Grass-Fed Whey Protein Isolate

Grass-Fed Whey Protein Isolate

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.

 

Transparent Labs Grass-Fed Whey Protein Isolate has become a pantry staple among health-conscious consumers who want a quality source of protein for supporting muscle growth, recovery, and overall health. Unlike many protein powders on the market, TL Whey Protein Isolate is sourced from grass-fed cattle, raised humanely and without the use of growth hormones or hormonal agents, and contains absolutely no artificial sweeteners, food dyes, or fillers.


Choose from 19 (and counting) delicious flavor options, or select the unflavored option if you prefer a pure whey protein isolate powder with a neutral taste. Transparent Labs Grass-Fed Whey Protein Isolate is easy to mix with liquids and can be incorporated into various recipes, making it a convenient and versatile protein source that fits easily into any diet.

 
 

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 Whey Protein Isolate

Whey protein isolate remains the gold standard of easily digestible, rapidly absorbed protein to facilitate muscle repair and growth.

Build Muscle Mass

Whey protein isolate is high in essential amino acids that promote muscle hypertrophy.

Promote Recovery

Consuming ample protein sets the foundation for muscle recovery so you can stay on top of your game every workout.

Support Body Composition

Protect your hard-earned muscle mass during weight-loss and maintenance phases.

Convenient Protein Boost

Adding whey protein to your diet is a simple, effective, and tasty way to reach your protein intake goals daily.

Key Ingredients

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

Grass-Fed Whey Protein Isolate

28 g
Grass-fed whey protein isolate provides easily digestible, rapidly absorbed protein with minimal fats and carbohydrates, making it ideal for building muscle and accelerating recovery between workouts.

Grass-Fed Whey Protein Isolate

28 g

The quality of  protein matters, and whey protein isolate is one of the purest forms of protein available. It provides a high protein content with minimal fats and carbohydrates, making it an exceptional choice for building muscle and accelerating recovery between workouts. In contrast to whey protein concentrate, whey protein isolate undergoes further filtration to remove virtually all of the lactose, making it more suitable for those who have difficulty digesting lactose.

Whey protein isolate is known for its rapid absorption and ideal ratio of all nine essential amino acids (EAAs)—which includes the branched-chain amino acids (BCAAs)—necessary for stimulating muscle protein synthesis [1, 2]. In other words, whey protein isolate is about as good as it gets for kickstarting the muscle-building process after working out. By providing essential nutrients needed for muscle repair, whey isolate can reduce recovery time, allowing for more consistent and intense training sessions.

So, why does the "grass-fed" distinction matter for whey protein powder? The vast majority of whey protein powders are made from the milk of grain-fed cows, whereas grass-fed whey protein is derived from the milk of cows that graze on natural, pesticide-free grass pastures instead of feeding on grains. Grass-feeding positively impacts the nutritional composition and quality of a cow's milk and milk byproducts. [3].

Research has found that grass-fed whey protein boasts higher levels of bioactive whey peptides (e.g. immunoglobulins and lactoferrin), omega-3 essential fatty acids, conjugated linoleic acid (CLA), and vitamins E and A—nutrients essential for inflammation control, muscle recovery, and overall health [4].

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Complete Your Stack

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

  • Best protein I have had in my entire life. The quality is incredible.
  • Best tasting whey protein isolate available. Even mixes great with just water.
  • Great taste not chalky no aftertaste and didn't say it tastes great!
  • 5 stars: 5859 (84%)
  • 4 stars: 544 (8%)
  • 3 stars: 353 (5%)
  • 2 stars: 133 (2%)
  • 1 star: 96 (1%)
M
Matthew C.
4LB / Milk Chocolate
Great taste with all the right

Great taste with all the right ingredients!!!

M
Mako M.
2LB / Vanilla Peanut Butter
Best protein I have had in my entire life

Best protein I have had in my entire life. It’s so good, the quality is incredible. It tastes very light and clean. I never realized how fake most powders tasted until I started using transparent labs 100% Grass-Fed Whey Protein Isolate. It’s amazing.

B
Ballzjr
Oatmeal chocolate chip cookie 🤤🤤🤤

Best protein powder I’ve used I make a smoothie with it

E
Evan P.
2LB / Salted Chocolate Caramel
Best protein I have had in a long time

Best protein I have had in a long time. I’ve been trying several brands lately and this one has to be #1 . From the simple and clear ingredients to the incredible flavor , Transparent Labs does not miss !

G
Gene W.
2LB / Chocolate Peanut Butter
Chocolate peanut butter is delicious mixes up

Chocolate peanut butter is delicious mixes up good, I like the fact that Transparent labs cares about what goes into their supplements and has their products third party tested. I mainly switch to Transparent labs there supplements alien with my goals
Gene W

R
Rosie S.
2LB / French Vanilla
Hands down the best tasting vanilla shake have

Hands down the best tasting vanilla shake I have had

F
Francis M.
Delicious and keeps me full

Its been amazing few days since I started on this . I dont ache so much after workouts, my recovery seems to be smoother and I stay satiated for longer. I love the sample packs , I will try out the French vanilla next. I ordered the Butterscotch .

g
greg b.
4LB / Milk Chocolate
Best Protein Ever!

I really enjoy this product—it has a great taste, it's easy to mix, and the flavor is spot on. It tastes just like chocolate ice cream, which makes it much easier to stick to my daily routine. I’m definitely going to be ordering more.

Happy customer,

Greg Bird

T
Tino
2LB / Mocha
Protein quality, great | flavor... eh

Well, when it comes to TP protein powder outside of flavor, they are one of the best in the industry. Clean, simple, easy, and works great with my diet. That alone earns 5 stars. Could pricing be better? Absolutely.

Now on to flavors:
Peanut Butter Chocolate - it's alright. Nothing to write home about. Standard, will get the job done, has an okay after-taste. Been buying their 4 pounders for a while. If it's all they had, I'd continue buying it, but it does leave something to be desired.
Mocha - absolutely horrendous. The Mocha flavor was severely unpleasant. Since I bought it, I will of course finish it, but however they concocted this flavor, they missed the mark badly. If you like this flavor, God bless you. Horrible after-taste.
Dark Chocolate - Not bad. I like it. Even look forward to it. Has more sodium and potassium than the mocha. Extra 10 calories. Overall good.

T
Trevor K.
2LB / French Vanilla
Clean Protein

I’m newer to using protein powder and spent a lot of time researching brands before buying. So far I’ve been really impressed with Transparent Labs. The taste is clean, mixes easily, and doesn’t leave that heavy/artificial feeling some brands do.

I’ve been using it post-run in smoothies while getting back into a consistent running and fitness routine, and it’s been an easy way to help hit my protein goals without feeling bloated. Definitely happy with the purchase and would order again.

M
Markneil
One of the best Whey Protein possible.

First of all, I love the taste if has to offer so far my favorite is Chocolate Hazelnut, I have yet to try other flavors until then, I have to finish these one first and i am enjoying every scoop of it. Everything is on point and for money's worth from clean ingredients to clean taste and for the protien ratio it gives It doesn't give me that overly feeling of any artificially high bad sugary foods and from any other protein brands I have tried in the past. It really helps me to know what and how clean are the ingredients I'm putting inside my body. If there is one product I would keep for the rest of my life when it comes to Whey protein its this one, Just simply amazing.

A
Anonymous
2LB / Peanut Butter
This is by far the best whey protein isolate ever.

This is by far the best whey protein isolate I had ever tasted. The peanut butter flavor is very smooth and not overpowering. Also this is the only whey protein isolate that have never bothered by stomach. Great job TL.

C
Chris S.
2LB / Peanut Butter
TL PB has set a new standard!

TL PB has set a new standard! Seeing 30g on the label caught my eye so I knew I had to buy.

My new question is whether we can expect the other WPIs to get up to 30g of protein per scoop.

M
Mrs.rhody_muscle
Best protein hands down!

Best protein hands down! I’m a competitive bodybuilder and this is my go to protein! I can’t wait to have my breakfast every morning! I’ve tried a few flavors, oatmeal chocolate chip cookie is good IF you like a chocolate base (I don’t), vanilla peanut butter is really good tastes like if you drank the milk from the Ghost Protein peanut butter cereal, and my absolute favorite the cinnamon French toast! It tastes EXACTLY like the picture and what it says!

B
Ballzjr
Faster than it said delivery time would take it

Faster than it said delivery time would take it doesn’t have the bad smell others have taste great I got French Vanilla

B
Bruce F.
2LB / Blueberry Pancakes
I use daily post workout

I use one scoop mixed with your creatine just about every morning & I don't skip especially as my post workout with water. Taste is great & it's one of the few that has no effects on my stomach. It's light enough where you don't feel full while enhancing my energy. I recommend this to a lot of people & groups I'm in on Facebook.

T
Tracy
4LB / French Vanilla
Love all Transparent Labs products

Love all Transparent Labs products. I use the chocolate in my ice coffee, and the vanilla in my smoothie. Definitely need my protein with marathon training (4th in one year) and my lifting.

J
Jasmin P.
4LB / French Vanilla
The BEST whey protein in the world

The BEST whey protein in the world. I gave up whey about 10 years ago cuz too much gas. But I really wanted to give it one more try. I was terrified. But I can literally intake this protein all day and no farts……. I’m ecstatic!!!!! The flavours and spectacular and it dissolves in water like perfect….. is so so so smooth and amazing. I’m so happy I found this. THANK YOU

R
Ronald W.
Excellent in every way

Excellent in every way. It has been a game-changer for my protein goals.

A
Anonymous
Definitely a Keeper!

After months of research, I decided to try Transparent Labs protein powder. Third party tested, a great source of protein and excellent taste I was sold.
The french vanilla is my favorite and makes me look forward to drinking my shake. Delicious

K
Kyle H.
Great flavor, sits well on my stomach despite

Great flavor, great ingredient list, mixes well, sits very well on my stomach despite being lactose intolerant, and compared to other whey proteins I’ve had.

Have several big tubs of the Chocolate flavor and have enjoyed that. Tried the sample of strawberry, as well as the oatmeal chocolate chip both of which were good in milk, did not try with water though.

Tried Milk & Cookies which was good though disappointing as the label shows like a classic Chocolate Chip cookie, however, I would say it’s closer to Oreo cream - still tasty, just not the tasty I was hoping for.

A
Aaron
Best tasting and easy to drink!

Hands down the best tasting and easiest protein shake I have ever had. The clean ingredients gives me piece of mind. Being on a strict diet this is super helpful. Thank you guys so much! Will be buying again and again!

How To Use

1

Step 1 - Add Powder

Add one level scoop (included in the container) of Grass-Fed Whey Protein Isolate into a shaker cup with 6-8 ounces of cold water, milk, or your preferred beverage.*
 
2

Step 2 - Mix Thoroughly

Place the lid securely on your shaker cup and shake vigorously until the powder fully dissolves and the mix is smooth.
 
3

Step 3 - Consume

For best results, consume Transparent Labs Grass-Fed Whey Protein Isolate within 30-60 minutes after completing your workout.
 
4

Step 4 - Use Daily

Our grass-fed whey protein isolate can also be used in recipes (e.g., pancakes) and incorporated into foods like yogurt and oatmeal to easily increase daily protein intake.

*Feel free to adjust the amount of liquid by a few ounces to suit your taste preferences (less water = stronger flavor and vice versa).

Frequently Asked Questions

Protein is a nutrient known for its satiating and thermodynamic effects, which can help reduce hunger and increase calorie expenditure. Incorporating whey protein isolate into your diet can assist in weight management by promoting fullness and an energy deficit.

 

Whey protein isolate undergoes additional processing to remove most of the lactose and fat content, leaving >90% protein. Whey isolate protein is often preferred over whey protein concentrate due to its higher protein purity and reduced lactose  content.

 

Yes, consuming whey protein powder daily is safe for most individuals. However, it's important not to rely on it as your sole source of protein.

 

Food labeling practices require the term "natural flavor" to be used instead of the specific constituents that comprise the flavoring. For example, the organic compound isobutyl acetate is found in raspberries, pears, and pineapples and is used commercially to impart natural fruity flavors.

If you're looking for a whey protein isolate with no natural flavors, try our Unflavored option!

 

Whey protein isolate is quickly absorbed by the body, making it ideal for post-workout recovery as it helps to repair and build muscle tissue efficiently. However, it can be used any time you want to increase protein intake!

 

Individuals with a severe lactose intolerance should not consume whey protein powders. Individuals who are allergic to milk, eggs, soybeans, wheat, shellfish, fish oil, tree nuts, and/or peanut oil should be aware that our protein is manufactured with equipment that also processes these ingredients.

Is whey protein good for weight loss or just muscle building?

Protein is a nutrient known for its satiating and thermodynamic effects, which can help reduce hunger and increase calorie expenditure. Incorporating whey protein isolate into your diet can assist in weight management by promoting fullness and an energy deficit.

How does whey protein isolate differ from whey protein concentrate?

Whey protein isolate undergoes additional processing to remove most of the lactose and fat content, leaving >90% protein. Whey isolate protein is often preferred over whey protein concentrate due to its higher protein purity and reduced lactose  content.

Is it safe to take whey protein powder every day?

Yes, consuming whey protein powder daily is safe for most individuals. However, it's important not to rely on it as your sole source of protein.

What’s in the “natural flavors”?

Food labeling practices require the term "natural flavor" to be used instead of the specific constituents that comprise the flavoring. For example, the organic compound isobutyl acetate is found in raspberries, pears, and pineapples and is used commercially to impart natural fruity flavors.

If you're looking for a whey protein isolate with no natural flavors, try our Unflavored option!

What’s the best time to take whey protein isolate?

Whey protein isolate is quickly absorbed by the body, making it ideal for post-workout recovery as it helps to repair and build muscle tissue efficiently. However, it can be used any time you want to increase protein intake!

Who should not take Grass-Fed Whey Protein Isolate?

Individuals with a severe lactose intolerance should not consume whey protein powders. Individuals who are allergic to milk, eggs, soybeans, wheat, shellfish, fish oil, tree nuts, and/or peanut oil should be aware that our protein is manufactured with equipment that also processes these ingredients.

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