Advanced Protein Matrix!
Contains CFM Whey Isolate, Micellar Casein And Egg Isolate!
9.0  out of 10  (101 Reviews)

Product Overview

  • 25g PROTEIN
  • 5.5g BCAAs
  • Sustained-Release Protein
  • Support Muscle Growth*
  • Clean Protein
  • Amazing Taste
Nutrabolics Isobolic Flavors


Wondering how your protein stacks up? The premium timed-release protein blend of ISOBOLIC® provides unrivalled quality for all-day anabolic effects. Each serving contains 25 grams of the cleanest protein commercially available including 100% whey protein isolate, milk protein isolate, micellar casein, and ultra-high grade whey protein concentrate, all balanced in the perfect ratio. It also contains 12 grams of Essential Amino Acids (EAAs) and 5.5 grams of BCAAs to help you build more muscle. With both rapid and sustained-release protein sources, ISOBOLIC is the perfect protein for elite level quality and all-day muscle growth.*

“ISOBOLIC contains only whole protein sources with absolutely no amino spiking whatsoever. Like all Nutrabolics products, what you see on the label is inside every product. We challenge any company to match the quality of ISOBOLIC.”

- Jayson A. Wyner, Co-Founder & Co-CEO


Ratings & Reviews

Overall Rating
101 Ratings
Verified Buyer Rating
13 Ratings
Average Flavor Rating
10 Flavors
Top Rated Flavor
Chocolate Peanut Butter
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Apr 29, 2019
Verified Buyer

I've tried many proteins and the ones I've tasted in strawberry were always tough for me to like. This one is the best I've had. No chemical aftertaste. Mixes great in a ball shaker cup and I prefer it mixed with almond milk as it's consistency is more like a milkshake. It's not overly sweet and kind of similar to strawberry Nesquik, more of a milk taste than a fruit taste if that makes any sense. I experienced no bloat or any kind of digestive issues after drinking it. Also if you do the math you're getting a high percentage of protein per serving with this one. It also has good macros. Going to try it in chocolate next. Taste and the amount of protein in each serving is the reason I gave it a 10.

Aug 15, 2018
Verified Buyer
  • 10 Vanilla

By far the best tasting protein i've ever had

Jul 29, 2018
  • 10 Chocolate
Jun 21, 2018
  • 10 Chocolate

I liked that this was a sustained release protein powder and that was something that I wanted to use before each of my morning workouts. I usually mix a scoop or two of this powder with just a little bit of water and some dry oat bran which mixed together quite well. The macros of this protein powder fit in perfectly with my diet and this kept me full for the duration of my workouts.

Mar 29, 2018

Superb filling protein blend, strawberry is ok it really was enjoyable in my green shakes and not overpowering. Not a sweet protein but that's a good thing Im no fan of that I prefer even flavoring and the fact that the sodium, carb and fat are useful. Definitely helps me stay on my diet and makes a difference too as far as convenience and bang for the buck

Dec 11, 2017

This is an outstanding product. The nutrition facts are great for someone who is trying to bulk up on muscle but cut down on fat. It mixed great with water or milk. I made protein pancakes too and my entire family enjoyed them. No complaints at all with this one. One of the better tasting cookies and cream flavors I've tried.

Sep 25, 2017

A big thank you goes out to Emergency and Nutrabolics for letting me try out ISOBOLIC!!! This was my first time trying this protein. I am not a real fan of Strawberry proteins, they usually taste off!!! I mix mine with 2% milk in a small personal blender. It tastes just like my favorite ice cream from cold stone! I used one scoop with 8 oz milk. I also used it as a meal replacement & muscle recovery drink. I was worried this wouldn't taste good but I was shocked at how good it was. It's very good. I also added some fruit to the blender from time to time. I'd recommend this if you love cake batter ice cream. So the BOTTOM LINE!!!!! This protein did in deed help with recovery time and kept me full!!! I did enjoy the taste and didn't have any stomach issues at all. Mixed up fine in a shaker also... So yes!!!!! I would buy this....

Sep 04, 2017
  • 9 Chocolate

It is no exaggeration to say that Isobolic has a great profile. 25g of high quality protein blend that also contains additional BCAAs and Flaxseed powder. Tried the rich Chocolate flavor which is smooth, creamy and thick when mixed with milk. Pro-oats with Isobolic were delicious too. This is a premium protein made from high quality ingredients and no compromises. I recommend it to all looking for a Chocolate blend.

Jun 28, 2017
  • 7 Vanilla

Isobolic vanilla is a good protein powder to use as a mid meal snack or a preworkout shake. It mixes in fairly easily no matter how you decide to use it. If your looking for a vanilla flavor that taste sweet like ice cream, this isnt the one for you but if your looking for a vanilla flavor that is simple tasting and is versatile in regards to how it can be mixed, go ahead and pull the trigger on this one. The price point is $75 for 73 servings but right now (current time) it is 20% off to help ease with cost. Overall, I would order the Isobolic protein powder again because the macros are solid and makes a useful midmeal or preworkout meal but I would get around to trying the other flavors first to see how they taste before giving the vanilla another go around. Full review below:

May 03, 2017
  • 10 Vanilla

Whenever I look a reviews, no one ever seems to comment on vanilla. It's always the best go to flavour as it's the plainest you can generally get. Nutrabolics hit the nail on the head with this one. I'm addicted to the drink.i would only drink If my body could handle drinking it, instead of the four L's or water per day. (And my bank account)

Jul 09, 2016
No written review.
Jun 09, 2016
  • 10 Chocolate

Taste great! One of the best chocolate proteins out there. Mixes great and awsome texture! No bloating or upset stomach. Added CLA is a bonus! Great protein sources of Isolates

Jan 30, 2015
  • 9 Chocolate

Great, easily digestible protein. Pretty sweet with water but really shines when mixed with milk (just like a rich choc milkshake)works great with oatmeal. A great profile tops off this supplement as a top choice for anyone.

Oct 19, 2014

IsoBolic has a really natural sort of banana flavor. I found it easy to regularly eat in oats, shakes, etc. The fact that it's a banana flavor makes for easy integration into recipes (muffins, cookies, breads, etc.) without totally killing or overpowering the flavor of anything else. Relatively minimal fats and carbs meant I could stay within my caloric allowances in those areas while filling in some protein when needed. It might not be the most fat/carb light protein supp out there but for most I think this would be a great option

Jul 20, 2014

Picked up a 5lb tub of this from a local shop. Nearly completed it but gave remaining approx. 10 servings away. Flavor: 8/10 Cinnamon oatmeal was quite good. Was not overwhelming cinnamon flavor, just right. Occasionally looked forward to drinking. Mixability 10/10 Had zero issues with this. Mixed well, no clumps after only a few shakes and did not need a grate to assist in mixing. Ingredient profile 5/10 Protein blend which is a . 81% protein per scoop which is also excellent (low carbs and fats). Lost points for additions of isolated amino acids. This should not be happening for any protein products and makes me question the actual protein per serving. Value 6/10 for a protein blend this cost me more than comparable protein blend brands. Additionally should have been considerably cheaper considering the amino acid additions. Efficacy/Other: 3/10 I feel this worked about as well as many of the other protein product blends I've tried thus far, did not excel or hinder workouts and weight management. However, about half way through I started getting GI upset approx 15min after consumption. Continued until I stopped using this product. Definitely disappointed overall, would not buy again.

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Price: $78.74  ($1.08 / Serving)
Flavor Rating: 8.2

What's in Nutrabolics IsoBolic

Serving Size 1 Scoop (31 g)
Servings Per Container:73
Amount Per Serving % Daily Value *
Calories 125       
Calories From Fat 9       
Total Fat 1 g 2%*
Saturated Fat .5 g 3%*
Trans Fat 0 g
Cholesterol 25 mg 8%
Total Carbohydrates 4 g 1%*
Dietary Fiber 0 g 0%*
Sugars 1 g
Protein 25 g 50%*
Calcium 21%
Iron 5%
Sodium 70 mg 3%
Potassium 220 mg 6%
* Percentage of daily values are based on a 2000 calorie diet.
† Daily value not established
Other Ingredients:
Whey Protein Isolate, Milk Protein Isolate, Whey Protein Concentrate, Micellar Casein, Cocoa Powder, Natural And Artificial Flavors, Protease, Amylase, Lactase, Bromelain, Conjugated Linoleic Acid, Flax Seed Oil Powder, Cellulose Gum, Xanthan Gum, Guar Gum, Acesulfame Potassium, Sucralose.
Allergen Warning: Contains milk and soy.

Directions For IsoBolic: Mix 1 scoop (31 g) of ISOBOLIC® in 8 oz - 10 oz/250 ml - 300 ml of ice cold water or milk and shake for a few seconds. Vary the amount of liquid to achieve desired flavor and consistency. Drink 1-3 servings daily or as needed to satisfy your protein or muscle building requirements. For best results, combine with a diet and exercise program.

Warnings: For adult use only. Keep out of reach of children. Consult your physician before using the product if you have any medical condition. Do not use if you are pregnant or nursing.

* 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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