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Gluten Free Gluten Free
Lactose Free Lactose Free
Sugar Free Sugar Free
No Artificial Flavors/Colors No Artificial Flavors/Colors
No Artificial Sweeteners No Artificial Sweeteners

Isopure® Whey Protein Isolate - Unflavored


Item # NaturalIsopure
Gluten Free Gluten Free
Lactose Free Lactose Free
Sugar Free Sugar Free
No Artificial Flavors/Colors No Artificial Flavors/Colors
No Artificial Sweeteners No Artificial Sweeteners
View All Specialty Diets

Product Information



With 50 Grams of Protein From 100% Whey Protein Isolate

Nature's Best® Perfect® Natural® Isopure® contains 50 grams of 100% Whey Protein Isolate. Any and all impurities typically found in most whey proteins have been removed to provide you with a great tasting, lactose free, glutamine enriched, state of the art low carbohydrate protein supplement. Natural Isopure is sweetened naturally with cane sugar and has no artificial colors, flavors, preservatives or sweeteners. Natural Isopure also uses only all natural vitamins and minerals.

Nature's best set out to create a product that didn't hide anything from its customers. We wanted you to know that you're purchasing the best product available on the market. Our protein source is clearly identified as 100% Pure Whey Protein Isolate. We didn't try to confuse you by listing a protein blend that doesn't tell you how much of the product is superior whey protein isolate and how much is whey protein concentrate or sweet whey or some other inferior protein source.

Furthermore, Natural Isopure is instantized so it can be taken anywhere and mixed with a spoon.

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.


Other Ingredients
Whey protein isolate (milk), Evaporated Cane Juice, Natural Flavor, Potassium Chloride, Dicalcium Phosphate, Calcium Citrate, Magnesium Oxide, Acerola, Luo Han, Citric Acid, alfalfa concentrate, garlic powder enriched with selenium, Sodium Chloride, zinc sulphate monohydrate, dried kelp powder, Inositol, d-alpha Tocopheryl Succinate, Beta Carotene, D-Calcium Pantothenate, menaquinone (Vitamin K2), Copper (as Copper Oxide), Pyridoxine, Riboflavin, Thiamine Hydrochloride, Vitamin B-12(Cyanocobalamine), Soy Lecithin
This product is produced in a facility with soy, dairy, egg and wheat ingredients, peanuts and tree nuts.
Label (click image to enlarge)

How To Use

Directions: For a rich, thick shake, mix 2 scoopfuls (63g) with 12 fluid ounces of water in a shaker or blender. If a shaker or a blender is not convenient, Isopure can be stirred into solution with a spoon.
Dist. By:
Nature's Best®
Hauppauge, NY 11788


4.7 / 5.0
25 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Very satisfied
This is the best stuff to use in keto baking to get the finished product close to the original recipes!! It is a very clean whey protein isolate!! It is recommended by many and for good reason
April 19, 2019
1 month ago
good product
Would recommend this product. Wish the price would be consistent. Sometimes lower ... sometimes higher.
February 4, 2019
4 months ago
In liquid I could not get it dissolve completely
January 30, 2019
4 months ago
Very pleased
No carbs, no calories. I add to my smoothie and taste didn't change ....sllowed me to cut back amts of other ingredients which reduces overall carb intake.
January 17, 2019
4 months ago
Many options
Isopure Whey Protein Isolate allows me to add protein to many different foods. So far a couple of my favorites are unsweetened applesauce and sugar free pudding. I don’t notice a difference in flavor at all.
September 14, 2018
8 months ago
i like it, But dont like the taste!
August 14, 2018
10 months ago
Exactly What I Wanted
I wanted a protein powder without flavor and especially without sweeteners. This is perfect! I blend it into smoothies and stir into cooked oatmeal. I can not taste it at all. I am very pleased to have found exactly what I wanted.
July 21, 2018
10 months ago
Great taste!
Great taste compared to others. Feel a little bloated after but overall satisfied!
July 21, 2018
1 year ago
good protein drink
Fast shipping, and it taste great!! I mix it with almond milk, ice and various fruits or veg.
June 13, 2018
12 months ago
There are not enough stars for this stuff! We love it! Tasteless. It mixes well into everything. Good hit of protein and you stay satisfied a long time.
April 26, 2018
1 year ago
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 13 questions Browse 13 questions and 12 answers
Why did you choose this?
GNC Store
Want unflavored whey to get protein with no darbs or sugar, no flavorings. Even stevia creates a problem. This seems ot match these criteria.
Alice M on Apr 4, 2015
Want unflavored whey to get protein with no darbs or sugar, no flavorings. Even stevia creates a problem. This seems ot match these criteria.
Alice M on Apr 4, 2015
How many calories per scoop?
A shopper on Mar 28, 2018
Is this product Lactose free?
A shopper on Oct 5, 2012
BEST ANSWER: No this product (Nature's Best Natural Isopure) is not lactose free. However the amount of lactose is very minimal.
The description says that it is flavoured with can sugar, However, there is no sugar listed in the ingredients and the label say it is 0g carbs. What I should believe now?
A shopper on Nov 18, 2012
BEST ANSWER: Per the FDA website, anything less than 0.5g of carbohydrates is rounded down to 0 grams.
Hi I want to know if I can drink it while Im pregnant? My gyn/ob recommend that I should take protein because I dont eat meat (beef, pork) Thanks
A shopper on Jul 30, 2013
BEST ANSWER: Yes, there is no warning about taking this while pregnant, but before starting any supplement, check with your personal physician.
Is this product gluten free?
A shopper on Mar 10, 2013
BEST ANSWER: No, this line of product is not gluten free. It has wheat as an ingredient.
Can I use this in recipes for cooking ? Many protein supplements cannot tolerate exposure to heat. Is there one that is better for cooking ?
A shopper on Feb 8, 2013
BEST ANSWER: When cooking with a whey-based protein, you will normally not lose any protein, however some of the other nutrients will degrade with heat. If you just want protein, heat in cooking is not a problem (since denaturing occurs naturally in digestion anyway.)
I need to be on a clear diet for a while. Does it mix clear?
A shopper on Oct 25, 2011
BEST ANSWER: It does not mix completely clear and it makes the liquid thicker. Not a good choice as a clear liquid diet item.
Can I take this as a meal replacement?
Nancy G on Apr 27, 2018
BEST ANSWER: I do i mix it in my smoothies for breakfast and it doesn't give me that over full feeling and im not hungry i like this one the best out of all the ones i tried
does it have egg in this product? as the label indicates that this product is processed with soy, wheat, tree nuts,egg etc???
A shopper on Oct 29, 2014
BEST ANSWER: There is no egg in the product. It is processed in a factory where other products use egg so it could come into accidental contact.
How many grams of sugar?
A shopper on Jun 2, 2011
BEST ANSWER: The label says 0 sugar
Re: Nature's Best Natural Isopure - Unflavored.

How many grams of protein per scoop does the above product contain?
A shopper on Mar 28, 2011
BEST ANSWER: 26 grams of protein per scoop
Each bottle contains 22 scoops correct each scoop contains 50 frams protein?? Thanks
A shopper on Mar 10, 2011
BEST ANSWER: This is a 3lbs container. It contains about 47 scoops. 26 grams of protein per scoop according to the label.
Can I take this while breastfeeding?
Cynthia H on Feb 27, 2018