Hydrolyzed 100% Whey Protein Isolate
A delicious, ultra-pure, fast-absorbing whey protein isolate to support muscle growth.*
9.3 out of 10 (2,409 Reviews)
5 Sizes
1.6 Lbs.
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12 Flavors
Birthday Cake
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Free Item
Price: $29.99 ($1.25 / Serving)
Flavor Rating: 8.6
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For a limited time, buy 1 ISO100, 5 Lbs. & get 1 ISO100 Bar, 1 Bar FREE!
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For a limited time, buy 1 ISO100, 3 Lbs. & get 1 ISO100 Bar, 1 Bar FREE!
Buy 1 Get Free Item
For a limited time, buy 1 ISO100, 1.6 Lbs. & get 1 ISO100 Bar, 1 Bar FREE!

Product Overview

Dymatize Informed Choice. Trusted by Sport.
Clean & Pure
Muscle Building


Isolate of the year
5 years in a row
typical amounts per serving


Grams of Protein


Grams of BCAAs


Grams of Leucine


Gram of Sugar



Why ISO100?

ISO100® is simply muscle-building fuel. Each serving contains 25 grams of protein and 5.5g of BCAAs including 2.7g of L-Leucine. Known worldwide for quality, taste and purity, ISO100 is produced to our highest quality standards. ISO100 is formulated using a cross-flow micro filtration, multi-step purification process that preserves important muscle-building protein fractions while removing excess carbohydrates, fat, lactose and cholesterol. ISO100 is made with pre-hydrolyzed protein sources to ensure fast digestion and absorption.

  • 25g of Whey Protein Isolate
  • 5.5g of BCAAs proven to help build muscle and aid in recovery
  • 1g of Sugar per serving
No Artificial Colors or Flavors. Sweetened with Stevia
Cinnamon Bun
Dymatize ISO-100. Hydrolyzed. 100% Whey Protein Isolate.
Available in
12 Indulgent Flavors
Peanut Butter - New Flavor
Cinnamon Bun
Cookies and Cream
Fudge Brownie
Gourmet Chocolate
Gourmet Vanilla
Orange Dreamsicle
Rocky Road - Exclusive Flavor!
Smoot Banana
Dymatize. Perfecting Athletic Nutrition Get Dymatize

Ratings & Reviews

Overall Rating
2,409 Ratings
Verified Buyer Rating
1,238 Ratings
Average Flavor Rating
16 Flavors
Top Rated Flavor
Orange Ice Cream
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.
Verified Buyer
  • 9 Fudge Brownie

It has been almost one month since i started Dymatize Iso100, All what i can say that this product is not effective as older version, I have used it in 2014 and i have got marvelous progress within one month, Muscles gained during this period is same as i could gain without Supplement. Although both versions contained BCAA, Once i finish this Whey, I will change to any other brand. but never back to Dymatize, Regarding Flavor, It is lovely, dissolves perfectly, but make sure to put water as described, More water will cause bad flavor, Less will not dissolve as wanted. Also One important thing, If my body didn't re-act well to this version it is 100% doesn't mean that it will not work with yours, coz all of us have different bodies.

Verified Buyer
  • 7 Birthday Cake
  • 10 Chocolate Peanut Butter
  • 9 Cookies and Cream

Amazing taste! Literally tastes like a melted down Reeces peanut butter cup! Cookies n cream is really good as well. I had the casein. Nice and thick very filling. The birthday cake iso100 is okay tasting. Not bad but nothing special like the others

Verified Buyer
  • 5 Birthday Cake
  • 10 Chocolate Peanut Butter
  • 9 Gourmet Chocolate
  • 7 Natural Vanilla

My favorite protein hands down. Tastes amazing and mixes really well. I've tried a lot of flavors and look forward to trying others. Just received Chocolate Coconut so we will see how that stacks up.

Verified Buyer
  • 10 Gourmet Chocolate

Best protein powder I had used. Price can be quite high honestly, not really affordable for everybody but it pays off in mix-ability and taste. Best chocolate taste I used with proteins, no too sweet and unbelievable mix-ability. Never had any bites or bad aftertaste after using this brand. I used other substitutes, because of price, but I couldn't drink them in the same way and I got back to this one. Even if I buy them not as frequently as I normally do, I will stick with ISO Dymatize !

Verified Buyer
  • 8 Cookies & Cream
  • 10 Orange Ice Cream

Orange Ice Cream is amazing. Cookies & Cream is nice but a little sweet for me. Generally mixes well.

Verified Buyer
  • 8 Strawberry

I love all of the Dymatize iso 100 the strawberry I received last month is awesome taste great and mix-ability a few clumps not much I still enjoyed the flavor.04/11/18

Verified Buyer
  • 10 Chocolate Peanut Butter

This is by far THE BEST flavor protein powder I have tried. I mixed it with unsweetened vanilla almond milk, and it is delicious.

Verified Buyer
  • 10 Peanut Butter

I have been using this product for almost two weeks now. I already slightly notice lean muscle growth, hasn't been long enough for crazy results yet obviously, but I have noticed it is for sure helping my body RECOVER for the next workout. I am currently on the carnivore diet, whey protein is aloud. The flavoring is mostly peanut flour and artificial flavors, not a complaint, its actually wonderful because it allows me to use this product and not feel as guilty doing so! As far to cheating as I have gone or plan to go on this diet. It is nice to have peanut butter flavor back in my life. This protein is SO EASY to mix, you don't even need a mixer cup. I typically mix one scoop (which is the recommended dose, also nice instead of 2-3 scoops like other brands), with two cups of skim milk or one cup skim one cup water, depending on the day. Always mixes instantly, you could even use a glass and spoon. I have only tried peanut butter so far, and for now it will stay that way, but after my diet I will venture to new flavors. The Peanut Butter flavor is FANTASTIC, especially if you are a pbutter lover like me. HIGHLY recommend this flavor and brand. Also if you have a LACTOSE intolerance, you will be fine. I do, too much heavy milks, creams, and cheeses bother me. I was using vegan protein before, I wasn't vegan, just wanted a lean protein and something that didn't bother my stomach. It didn't bother my stomach but didn't help much with gainz, recovery, or taste as good. But this protein is good all around. Trust. Since I am on carny diet I only drink water and milk. But this powder with skim milk has not bothered my stomach and I have 1-2 shakes a day. Cheers!

  • 2 Birthday Cake

Bought this from Supp Superstore because birthday cake is my favorite flavor of pretty much anything I try. This stuff, however, was awful. The taste is so sickeningly sweet and it's more so just a super sweet vanilla flavor, rather than actually tasting like the birthday cake flavor in supplements that I prefer. More than just the taste though, this stuff does not mix well. I add it to water or almond milk depending on my macros for the day. I always use a bullet blender for my shakes and it just turns this into a foamy disaster which then separates and is just never right as far as texture goes. In an effort to use it up and get rid of it, I've tried making protein pancakes with it. Fortunately, the sweetness gets cut down that way, which is nice. However, compared to other proteins, this stuff does not mix well for pancakes. It stays in a sticky, clumpy, goopy mess as batter. Although it does the job and turns out better than it looks. Overall, I would not buy again.

Verified Buyer
  • 10 Gourmet Chocolate
Verified Buyer
  • 8 Birthday Cake
  • 9 Chocolate Peanut Butter
  • 10 Orange Dreamsicle
  • 6 Gourmet Vanilla
  • 8 Fudge Brownie

This is easily my favorite whey isolate product, this is very effective and almost all flavors are amazing especially orange dreamscicle.

  • 9 Cookies and Cream

Tastes really good and mixes really well. It doesn’t make your drink feel thick and heavy like some other proteins do. Super pure and high quality protein that does it’s job exactly how it’s supposed to. The only complaint I have is that the smell isn’t nearly as good as the taste.

  • 3 Gourmet Chocolate

Cardboard? Metal? Chocolate doesn't taste like chocolate. It's a step above brutal... barely. Not sure how to describe the aftertaste, but I'm going back to my old brand that was a little sweet but at least tasted like chocolate.

Verified Buyer
  • 10 Birthday Cake
  • 10 Chocolate Peanut Butter
  • 10 Gourmet Chocolate
  • 9 Orange Dreamsicle
  • 9 Cookies and Cream

I started taking this as I was diagnosed as pre-diabetic. So low or no carbs. Mix with straight water and ice, flavors are really, really good. To make this as close to ice cream parlor taste, I use the following mix. 8oz Vanilla unsweetened almond milk. 6 ice cubes 1-2 packs Truvia (no carb/no calorie sweetener) 3 scoops of ISO 100. It about as good as gets with: 2g net carbs, 2.5 fats (All MCT from almond milk) 77 grams of protien

  • 10 Fudge Brownie

OH. MY. GOD. Let me just say, I have tried almost every brand and type of protein powder available, and Dymatize ISO100 is the best. I just bought a tub the other day upon recommendation from my local supplement store, and I am more than impressed to say the least. I bought the fudge brownie flavor, and it is insanely delicious just mixed with water. So creamy and sweet, meanwhile ISO100 is one of the most pure and lean protein powders on the market. This stuff is amazing! I can drink it multiple times a day just with water because it is so delicious...and a bonus is that it is pretty inexpensive or comparable to other powders in its class. I have spent double the price for the same size on other brands in the past few years for proteins that were awful tasting. Nice job Dymatize, I can't wait to try some other flavors.

What's in Dymatize ISO100

1.6 Lbs. Birthday Cake
Serving Size: 1 Scoop (30g)
Servings Per Container: About24
Amount Per Serving
Calories 110       
Calories from Fat 0       
% Daily Value *
Total Fat 0 g 0%
Saturated Fat 0 g 0%
Trans Fat 0 g       
Cholesterol 10 mg 3%
Sodium 160 mg 7%
Potassium 100 mg 3%
Total Carbohydrate 1 g 0%
Dietary Fiber 0 g 0%
Sugars (less than) 1 g       
Protein 25 g 50%
Vitamin A 0%
Vitamin C 0%
Calcium 10%
Iron 0%
* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
Hydrolyzed Whey Protein Isolate, Whey Protein Isolate, Natural and Artificial Flavor, Salt, Soy Lecithin, Sucralose, Steviol Glycosides (Stevia)
Gluten Free

Directions For ISO100: Formulated for easy mixing. Add one scoop (included) to 5-6 oz (150ml-180ml) of water, milk or your favorite beverage and mix thoroughly. Enjoy prior to workouts, within 30 minutes after workouts or anytime you desire a high-quality, high-protein drink.

* 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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