JYM Supplement Science


100% Clear Whey Protein Isolate Powder
20g protein, zero fat, no added sugars, and only 90 calories per serving
8.7  out of 10  (7 Reviews)

Product Overview

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"As you’ve heard me say time and again, sufficient protein intake is critical for improving your physique, performance, and overall health.* In fact, I recommend getting in a solid 1 - 1.5 grams of protein per pound of body weight per day, and at least 40 grams of protein at meals.

For this reason, Iso JYM is a go-to supplement for everyday use. It delivers the most protein per calorie when compared to protein powders that use protein concentrates or milk protein isolates, and it’s perfect to help meet your macros on protein without going over on carbs and fats."

~ Jim Stoppani, Ph. D

Product Benefits

  • Iso JYM contains 20 grams of pure whey protein Isolate (WPI), with zero fat, no added sugar, only 1-2 grams of carbohydrates, and only 90 calories per serving.
  • A convenient, delicious, light, refreshing drink that provides a quick hit of easy-to-drink protein whenever you want it – first thing in the morning, with lower-protein meals to bump up the protein content, as a between-meal snack, or even before and after workouts.
  • Tastes more like your favorite thirst-quenching drink, with no milky taste or texture.
  • Promotes lean muscle gains, exercise recovery, and numerous health benefits in the body.* It’s also the perfect protein powder for those following low-carb diets to maximize fat loss.*
  • Adjust plate according to your goals, so you can get results tailored to your needs.
JYM ISO JYM Product Benefits

Key Ingredients

Iso JYM contains 20 grams of pure Whey Protein Isolate (WPI) per scoop. WPI is a purer form of whey protein than the cheaper whey protein concentrate you see in most protein powders. The WPI in Iso JYM goes through a specific microfiltration process that removes lactose and doesn’t harm the small protein molecules from the whey. The result is a whey product with a protein concentration of 90% or more for maximum uptake and digestibility.

JYM ISO JYM Key Ingredients

Supports Your Goals

Iso JYM is convenient—drink it with meals to meet protein goals, before and after your workouts, first thing in the morning, or as a quick between-meal snack. Iso JYM can also be mixed with Pre JYM or Post Active JYM for exciting new flavor combos that not only crush your tastebuds but provide fuel to help crush your workouts and support maximal recovery after exercise*. Plus provides a clean protein source for those intolerant to lactose.

JYM ISO JYM Support Your Goals

Good To Know

Just as important as what’s in Iso JYM is what’s not in it. Iso JYM contains no fat, no added sugar, only 1-2 grams of total carbs, NO LACTOSE. You’re getting 20 grams of the highest-quality whey protein with only 90 total calories. It’s the ultimate clean protein!

About The Brand

JYM Supplement Science products deliver the highest quality ingredients at full, efficacious doses, and with complete transparency. No proprietary blends, no abbreviated formulas, no concentrated doses. The JYM brand exposed these shady practices when it launched in 2013, changing the sports nutrition industry for the better. With Iso JYM, the transparency continues, as does the innovation!

About the Brand JYM

Ratings & Reviews

Overall Rating
7 Ratings
Verified Buyer Rating
4 Ratings
Average Flavor Rating
2 Flavors
Top Rated Flavor
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.
Feb 03, 2021
Verified Buyer

love this product. Anxious to see what the next new flavor will be.

Jan 25, 2021
Verified Buyer

Absolutely delicious. I mix it with my pre and the flavors mix amazingly.

Dec 11, 2020
Verified Buyer

I take several Jym Supplements. However, I do not like this new protein. The flavor isn’t good, it dries out my mouth, and it leaves little protein pieces in my shaker. I would pass on this one...

Dec 06, 2020
Verified Buyer
  • 10 Grape

This protein is AMAZING. I've tried numerous fruit tasting proteins before and all of them disappointed me. This one on the other hand tastes like grapes, similar to the Kaged Muscle Grape pre workout (which I love). I would definitely recommend this and will be picking up the Mango flavour on my next order. Jym continues to have the best tasting protein powder on this site!

Dec 06, 2020
  • 5 Mango Lime

Interesting idea to have just ISO-whey. However it misses the mark by not being instantized so it's easy to mix. After mixing it's super foamy so you'll need to wait a 5 minutes or longer before drinking. Keep in mind this is only 18 servings for $33. Price point is a bit steep. Not sure if this is something to continue taking or not. It's ok, but needs several improvements to be better. Flavor is way off. It's not Mango Lime but more like Chalk. Strange choice in flavors - grape is too sweet and Mango is a bit off tasting.

Nov 28, 2020
  • 10 Grape
  • 9 Mango Lime

Tried both grape and mango. This is the best fruit flavor isolate on the market. Taste is light and doesn’t leave a weird aftertaste. Mixes clear instead of colored. Highly recommend for a low calorie isolate.

Nov 21, 2020
  • 8 Grape

I really like the taste of the ISO Jym. Both flavors are better then other ISO’s I’ve tried in the past. These are great for my low carb days to help get in the protein.

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Price: $32.99  ($1.65 / Serving)
Flavor Rating: 9.8


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20g protein, zero fat, no added sugars, and only 90 calories per serving

What's in JYM Supplement Science ISO JYM

Serving Size: 1 scoop (26g)
Servings Per Container: About 20
Amount per serving % Daily Value
Calories 90       
Total Fat 0 g 0%**
Cholesterol 5 mg 2%
Sodium 10 mg 0%
Total Carbohydrate 2 g 1%**
Total Sugars 0 g
Includes 0g Added Sugars 0%
Protein 20 g 40%**
** Percent Daily Values are based on a 2,000 calorie diet.
† Daily Value not established
Whey Protein Isolate, Natural Flavor, Malic Acid, Sucralose, Polysorbate 80 and/or Sunflower Lecithin (Emulsifier), Silicone (Antifoaming Agent)
Contains: MILK
Produced on shared equipment that also processes products that contain MILK, EGG, SOY, TREE NUTS and WHEAT ingredients.

Directions For ISO JYM: As a dietary supplement mix one (1) scoop of Iso JYMTM in 10-16 oz. of water. To make a light translucent beverage shake well and wait about a minute for the natural foam to dissipate.

Warnings: Use this product as a dietary supplement only. Do not use for weight reduction. Check with a qualified healthcare professional before taking this product if you are pregnant, nursing, under the age of 18, or if you have any known or suspected medical condition(s) and/or are taking any prescription or OTC medication(s). KEEP OUT OF REACH OF CHILDREN. Store in a cool, dry place. Do not purchase if seal is broken or missing.

* 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.