"This is the best clear protein, though I really miss the green apple. Wish they would bring it back."

























ISO JYM 100% Whey Protein
CA WARNING
Consuming this product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov/food .
Overview
- Low calorie
- Lactose free
- Fat-free, Zero Fat
- Crystal-clear mixing
- Fast absorption
- Difficulty digesting lactose? Not with ISO-JYM
- Delivering more protein per calorie than most top alternatives
- Optimal digestibility
- 20g Whey Protein Isolate
- 1g Carb
- 90 Calories
- Zero lactose
- Zero fat
- Ultra-filtered formula
How to Use
Supplement Facts
- Low calorie
- Lactose free
- Fat-free, Zero Fat
- Crystal-clear mixing
- Fast absorption
- Difficulty digesting lactose? Not with ISO-JYM
- Delivering more protein per calorie than most top alternatives
- Optimal digestibility
- 20g Whey Protein Isolate
- 1g Carb
- 90 Calories
- Zero lactose
- Zero fat
- Ultra-filtered formula
Featured Ingredients
Formulated by former Yale Research Scientist, Dr. Jim Stoppani.
Award-Winning Excellence
JYM Supplements is renowned for its decades-long commitment to quality and performance.















About The Brand
Dr. Stoppani has always been about the real science and the real results – from back when he was a student at UConn, to a post-graduate researcher at Yale School of Medicine, to the science editor at the largest bodybuilding magazines in the world (Muscle & Fitness and FLEX) working alongside fitness pioneer Joe Weider, all the way to creating the JYM Supplement Science brand (the real products) in 2013.
Since then, the JYM brand led by Dr. Stoppani has helped literally millions of everyday people – real men and women, just like you. With a diverse product offering covering performance, recovery, fat loss, hormone support, health, and overall wellness, there’s something for everyone in the JYM line.
Overall rating: 4.8677535 / 5 from 552 reviews.
AI Generated Review Summary
ISO JYM 100% Whey Protein offers a low-calorie, lactose-free, and fat-free protein source with excellent mixing and taste. It is highly regarded for its fast absorption and optimal digestibility, making it a top choice for those on a low-carb diet.
Summary topics
- Mixing Ease: 11%
- Iso Jym Satisfaction: 5%
- Iso Jym Preference: 10%
- Protein Quality: 27%
- Drink Refreshment: 5%
Review topics: ["size","results","feel","fit","texture","consistency","bottle","taste","alternative","boost","stomach","service","container","light","sugar","issues","favorite","substitute","shipping","use","order","difference","work","protein","mixes","jym","grape","drink","iso","apple"].
Review highlights
- "Best clear tasting protein" —
- "The Iso Jym mixes well, tastes great and the macros are 10/10." —
- "Even my wife who doesn't normally like protein shakes will happily drink this." —
Reviews
Light and easy to drink.
"Follow the instructions and this is a great protein. Much lighter and easier to drink than others, perfect for warmer days. I mix it into a rotation and usually have it on rest days as a normal during the day drink. The flavor is good, not too overwhelming."
Great Tasting whey. Everything you Need.
"Great tasting whey isolate that I drink during my workouts. It’s that good. Feels like you’re cheating."
A great addition to increase
"A great addition to increase the protein intake for the day."
ProJym’s iso protein is a
"ProJym’s iso protein is a great protein. It’s clear and refreshing from whey protein. I use both whey and iso protein and I definitely feel the difference."
Best protein on the market
"I love the isolate protein. It's the only protein powder I can stomach. It mixes so easily and doesn't have that gross milky or chalky taste. It also pairs well with pre workout flavors, so I usually mix them in one bottle. I would give my left arm for Jym to bring back the sour apple or watermelon punch flavor."
ISO Jym
"Great blend of whey protein! Keep putting out great products Jim!!!"
Great Product!
"I love this product. It mixes well and the consistency is perfect. It also tastes very good. It’s a little more expensive than other brands, but well worth it. I’ve tried many different brands over the years and JYM Whey is definitely my favorite."
Good
"I don’t like milk tasting protein shakes so this is perfect for just adding water. Only tried the grape flavor so far but this will be my go to protein powder brand from now on."
Great Taste
"The grape flavor iso Jym is great tasting and refreshing, I also love the green apple as you can stack the post Jym with its iso counterpart! The mixability is great in 20oz of water and doesn’t leave you feeling overly full like some protein powders do."
Q&A
JYM Service
Have a Question?
World-class training programs and supplements deserve world-class support. At JYM Supplement Science, we are committed to delivering an unmatched level of service that sets the standard in the industry. Whether you're stepping into the gym for the first time or are a seasoned athlete, our team of certified trainers and service professionals is here to help you reach your goals.
From account setup to accountability and every step in between, the JYM Service Team has one goal: your success. Reach out by email, or phone —our team is always in your corner, ready to guide you toward your ultimate transformation. Connect with us today and let’s get started on your journey to greatness!
Our customer service team is ready to assist you further! Email us at customerservice@jymsupplementscience.com and we'll respond within 24 hours, Monday–Friday. Weekend messages are answered the following Monday.
