Zero Carb Isopure
Nature's Best

Zero Carb Isopure

Zero Carb Isopure!
With 50 Grams Of Protein From 100% Whey Protein Isolate!
8.7  out of 10  (596 Reviews)
3 Sizes
3 Lbs.
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12 Flavors
Alpine Punch
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Special Offer
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Price: $42.49  ($1.93 / Serving)
Flavor Rating: 6.6
Limited Time Offer
For a limited time, buy 1 Zero Carb Isopure, 3 Lbs. & get Opti-Men, 90 Tablets 50% Off!

Product Overview

25G Protein per 1 Scoop Serving
Zero/Low Carb
Gluten & Lactose Free
100% Whey Protein Isolate

That’s what we’re made of. It’s also what we stand for—protein that’s lactose-free, low calorie, with little or no fat and carbs, and no impurities. The purest stuff out there. Not to mention delicious.  Beyond quality. This is protein with taste.

Pack in powerfully pure protein, without packing on the carbs. Our 100% whey protein isolate powders amp you up, without any unwanted weight. Just pick your level: Zero Carb or Low-Carb (which also has ZERO sugar), both with 25 grams of protein per scoop. It's 100% whey protein isolate loaded with vitamins, minerals and nutrients to keep you going strong—and always without gluten, lactose, or any impurities. Made with our complete microfiltration process to be the only completely clear milk protein when dissolved in water. Available in a range of delicious flavors to mix up some seriously delicious and dynamic recipes. Note: Zero/Low Carb Isopure powders have a vitamin/mineral premix which is not soluble; they will be cloudy when dissolved.

Isopure Brand Heritage

Isopure and Nature’s Best were started by two guys named Hal and Ernie with a cement mixer and an idea to make things better. To be solvers of people's problems—active people who want protein to help them be their optimal self. For more than 30 years, we've been working to make products that offer the cleanest, purest, and most perfect protein around.

We are for people who want products that are high quality, pure, premium, authentic and effective. We are for those aspiring to be the best they can be. Weight trainers, runners, rock climbers, mothers, fathers, busy professionals – just to name a few. We make the absolute finest fuel so you can conquer your daily obstacles and reach your fitness and health goals. We aim for the highest standards. Beyond quality. Formulas with taste.

We continue to make more out of life with new premium formulas using the best ingredients possible — we uphold the highest standards of quality. So you can continue to expect the best from us, to get the best from yourself.

Ratings & Reviews

Overall Rating
596 Ratings
Verified Buyer Rating
228 Ratings
Average Flavor Rating
12 Flavors
Top Rated Flavor
Chocolate holandês com baixo teor de carboidratos
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.
  • 10 Cookies & Cream

I love the cookies and cream! For zero carb it's not too watery and works great. Mixes pretty well with no clumps.

Verified Buyer
  • 10 Banana Cream
  • 10 Pineapple Orange Banana
  • 10 Strawberries & Cream
  • 10 Mango Peach

This stuff is great. I've tried several of the flavors and they have always been great. It mixes well and best of all, no chalky after-taste like some others have. I started using IsoPure a few years back because it is lactose free and is pretty much the only protein powder I use now. Highly recommend.

Verified Buyer
  • 8 Low Carb Dutch Chocolate

I'm not a fan of the unique taste of whey protein but Isopure did a great job with its flavors. The Dutch Chocolate is very delicious and highly recommend this flavor. However, the statement that this protein is lactose free is perhaps a little misleading. The ingredients contain milk (and soy) and therefore my stomach is at its worst after drinking this. I was greatly disappointed and I immediately had to stop consuming this product.

Verified Buyer
  • 10 Banana Cream

I have only tried the banana cream and the Dutch chocolate but I love the banana cream. It taste just like a banana milkshake. It has great taste to it. The Dutch chocolate has good review also but not as flavorful as banana to me. Either way you get your money's worth. Great product with tons of protein per serving.

Verified Buyer
  • 10 Low Carb Dutch Chocolate

I enjoy this product a lot. It’s yummy and mixes well. I’ve tried others and this one is the best.

  • 10 Low Carb Dutch Chocolate

really link this product. tastes great and mixes well it may be more expensive than others but with 50g of protein per servings it is 2X the protein than the majority of other shakes so the price is actually cheaper per gram of protein and there are no carbs

Verified Buyer
  • 7 Low Carb Dutch Chocolate

The flavor was as expected for a low carb sugar free. While it was not as delicious as other sugar containing brands, as I said it was expected. However, the powder does have a harder time mixing in a blender bottle, so you're stuck shaking for a longer period and it still clumps on the lid of the bottle. I always much with water, so using milk would definitely amplify the inability to mix well, and I cannot comment on the taste with milk. Overall, for low carb, sugar free, I'd buy it again for sure.

Verified Buyer
  • 9 Banana Cream
  • 7 Cookies & Cream
  • 9 Creamy Vanilla
  • 10 Low Carb Dutch Chocolate
  • 9 Low Carb Toasted Coconut
  • 5 Vanilla Salted Caramel

I have tried quite the variety of flavors from Nature's Best Isopure. The Dutch Chocolate is by far my favorite. Coming in a close second is the Toasted Coconut. I would really like to try the two together and make a Mounds type flavor. The Banana Cream is also close to the top for me. It has an amazing flor and is just so smooth. I have paired this with the Dutch Chocolate in the past and it was pretty amazing. I am torn on the Vanilla Salted Caramel. At times I taste a rubbing alcohol after taste. Not quite sure what is going on there. It is alright. I enjoyed the Cookies & Cream, but I will say that it needs more cookie in it and less cream. The ratio is off a bit. The Vanilla to me was your typical vanilla protein. It wasn't bad by no means and was very creamy. I mix my powder with water mostly, but will through some almond or coconut milk in it from time to time if I know I may not eat for a while. This holds me over longer than just mixing with water. My over all experience with Isopure is A+ and I would recommend this brand to anyone.

Verified Buyer
  • 6 Mint Chocolate Chip

Loved the protein. Great protein for recovery. Mint chocolate does not have a great taste, but that's not the reason i'm buying zero carb protein.

  • 10 Vanilla Salted Caramel

I loved the flavor, it was a lot better than the Vanilla theyhave. I was skeptical about trying this one but I love salted carmel and I am glad I gave it a try.... Sometimes I will add some zero calorie sweetener and ice and it tastes just like ice cream

Verified Buyer
  • 6 Apple Melon

Not the worst tasting thing in the world, but after a while I started to dread drinking it. I got sick of the flavor pretty fast. However, I love the product and definitely plan on trying a flavor more suited to my taste buds. Looking forward to trying Alpine Punch next.


Great product!! Mixes after taste...use it everyday!

Verified Buyer
  • 8 Low Carb Dutch Chocolate

I had noticed that the whey concentrate that I was previously taking was making my acne flare up, so I did a little research and decided to opt for a whey ISOLATE as an alternative. I spent a great deal of time looking for a quality whey protein isolate that was both affordable and reasonably easy to use (good taste, easy to digest, etc). I opted for the dutch chocolate since it was the highest rated flavor, and was pleased to find out that the taste wasn't that bad at all. It's obviously not as rich as some of your generic chocolate whey proteins, though that was to be expected with this more natural isolated whey derivative. It just tastes like slightly watered-down chocolate whey, which for me is not an issue at all. Furthermore, it never filled me up or made me feel even remotely bloated after taking it, which I had noticed would occasionally happen with the whey concentrate. And most importantly, it didn't seem to affect my skin negatively. Solid protein that I'll definitely continue to use.

  • 3 Low Carb Dutch Chocolate

I drink my protein with water so dutch chocolate was definitely not my favorite. BUT! I loved the results of this protein. by far my favorite protein I've ever had.

  • 9 Low Carb Dutch Chocolate

Thus being the best tasting for what I need I find it at its best when I use almond coconut milk and a small amount of ice blended.

What's in Nature's Best Zero Carb Isopure

3 Lbs. Alpine Punch
Supplement Facts
Serving Size2Scoopfuls(63g)
Servings Per ContainerAbout 22
Amount Per Serving
Calories 210
Calories From Fat 10
% Daily Value*
Total Fat 1g 1%
Saturated Fat 0.5g 3%
Trans Fat 0g
Cholesterol 10mg 4%
Sodium 340mg 14%
Potassium 810mg 23%
Total Carbohydrate 0g 0%
Dietary Fiber 0g 0%
Sugars 0g
Protein 50g 100%
Vitamin A 50%
Vitamin C 50%
Calcium 60%
Iron 6%
Vitamin E 50%
Vitamin K 50%
Thiamin 50%
Riboflavin 50%
Niacin 50%
Vitamin B6 50%
Folate 50%
Vitamin B12 50%
Biotin 50%
Pantothenic Acid 50%
Phosphorus 50%
Iodine 50%
Magnesium 50%
Zinc 50%
Selenium 50%
Copper 50%
Manganese 50%
Chromium 50%
Molybdenum 50%
Chloride 20%
* Percent Daily Values (DV) are based on a 2,000 calorie diet. Your daily values may be highere or lower depending on your calorie needs.
Ion Exchange Whey (Milk) Protein Isolate, Microfiltered Whey (Milk) Protein Isolate, Vitamin/Mineral/Amino Acid Blend (Taurine, Potassium(as Potassium Chloride), Chloride(as Potassium And Sodium Chloride), Calcium(as Dicalcium Phosphate Dihydrate), Phosphorus(as Dicalcium Phosphate Dihydrate), L-Glutamine, Magnesium(as Magnesium Oxide), Vitamin C(as Ascorbic Acid), Vitamin E(as DL-Alpha Tocopheryl Acetate), Niacin, Zinc(as Zinc Sulfate Dihydrate), Vitamin A(as Palmitate), Pantothenic Acid(as D-Calcium Pantothenate), Vitamin B6(as Pyridoxine Hydrochloride), Copper(as Amino Acid Chelate), Manganese(as Manganese Sulfate Dihydrate), Riboflavin, Thiamin(as Thiamin Hydrochloride), Folic Acid, Biotin, Iodide(as Potassium Iodide), Chromium(as Amino Acid Chelate), Vitamin K, Molybdenum(as Amino Acid Chelate), Selenium(as Amino Acid Chelate), Vitamin B12), Soy Lecithin, Malic Acid, Citric Acid, Natural Flavor, Sucralose, FD&C Red 40.
This Product Is Produced In A Facility With Soy, Dairy, Egg And Wheat Ingredients, Peanuts And Tree Nuts.

Directions For Zero Carb Isopure:

For a rich, thick shake, mix 2 scoopfuls (65g) with 12 fluid ounces of water in a shaker or blender. If a shaker or blender is not convenient, Isopure can be stirred into solution with a spoon.

For healthy adults, consume enough protein to meet your daily protein requirement with a combination of high protein foods and protein supplements throughout the day as part of a balanced diet and exercise program.


Warnings: Accidental overdose of iron containing products is a leading cause of fatal poisoning in children under 6. Keep this product out of reach of children. In case of accidental overdose, call a physician or poison control center immediately.

* 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.
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