Pre Jym Pre Workout
JYM Supplement Science

Pre Jym Pre Workout

Pre-Workout Powder Powerhouse Packed with 13-Hand Picked Ingredients to Support Improved Workouts*
A Cutting-Edge Pre-Workout Formula Built on Solid Science*
9.1  out of 10  (4,026 Reviews)

Product Overview

True Performance Pre-Workout

Strength Energy Endurance Mind*

5 Must Have Ingredients

6g BCAAs
6g Citrulline Malate
2g Creatine HCl
2g Carnosyn Beta-Alanine
1.5g Betaine
Pre JYM Container
CarnoSyn | Carnosine Synthesizer
Jim Stoppani

Pre JYM™ Changed

The Supplement Industry

Upon introduction in 2013, Pre JYM ushered in an era of transparency and became known as the world’s first high-performance Pre-Workout supplement. Pre JYM was designed by renowned exercise and nutrition scientist Dr. Jim Stoppani to allow dedicated athletes to unlock the critical elements to fitness success: motivation, performance, transformation, and growth.*

13 Hand-Picked Ingredients

Pre JYM includes 13 ingredients that complement one another to prime the body for intense workouts, making it a complete pre-workout supplement. When it comes to supplement formulation, it is important to understand how synergies work. Certain ingredients work well when combined with other ingredients. This is where many supplement companies fall down. with PRE JYM, I personally selected these 13 quality ingredients that have fueled my workouts and those whom have applied my advice for years. As a scientist and bodybuilder, I understand how to combine both science and real use to attain real results.

No Proprietary Blends

Look at the Supplement Facts panel of your current pre-workout product and you'll likely see “proprietary blend,” “pump matrix,” performance blend,” or other catchy name in lieu of listing all ingredients and precise doses of each. Some supplement companies want you to think this means they've created a special concoction that magically delivers unique results. Because this blend is so amazing, they have to keep the amounts of each ingredient secret so that no other company steals the formula.

Truth is, proprietary blends typically serve a different purpose: They allow companies to hide how little of each ingredient they've actually put in the product. These ingredients are often cheap, ineffective, under-dosed, or all of the above. Pre JYM doesn't use proprietary blends – never has, never will. All 13 ingredients with exact doses that are clearly listed on the label. You deserve to know exactly what ingredients, and how much of each, are in the product you buy. Proprietary blends serve the purpose of hiding what’s in the product, plain and simple.

Bolt Icon Energy
Focus Icon Focus
Runner Icon Stamina


Get stronger in the gym and train harder and longer. Pre JYM will help you do it with ingredients that promote energy, focus, and stamina. Set PR’s in all areas with Pre JYM as your high-performance training fuel.


Gaining muscle helps support all goals – strength, physique, weight loss, and overall health and wellness. Pre JYM will spearhead your growth efforts with nutrients, not stimulants, that ignite protein synthesis to help you build more lean muscle.*

Nutrients vs. Stimulants

Your pre-workout should contain real nutrients that deliver real results, not various stimulants that do nothing more than get you temporarily “amped up.” The Pre JYM formula is based on amino acids (the building blocks of protein) that fuel your muscles and provide “clean energy.” The only stimulant in Pre JYM is caffeine, selected for its performance-enhancing benefits, not simply to give you a jolt. Pre JYM changed an entire sports nutrition category when it launched in 2013. Before then, pre-workouts were loaded with stimulants you couldn’t pronounce that gave you the jitters and little else. Stimulants provide a temporary boost. Nutrients, on the other hand, are the foundation for real gains in strength, muscle-building, endurance, and overall performance. Pre JYM was the first ever true performance pre-workout, and years after changing the industry, it’s still the product smart consumers choose to fuel their muscles, and their goals, with actual nutrients.

No BS, Just Science

I've been studying nutrition and supplement science both in the lab and in the gym for decades. I’ve done the research, and I’ve converted it into real results for millions of real people just like yourself. I began educating hard-training men and women worldwide through the pages of Muscle & Fitness, FLEX, and Muscle & Fitness Hers magazines before finding a home for my programs, articles, and videos here on, as well as my own website I developed Pre JYM back in 2013 to take the results to the next level and provide myself and anyone else training hard in the gym the ability to access, in one bottle, the best supplement ingredients to help build lean muscle, torch body fat, improve strength, and boost performance.*

Ratings & Reviews

Overall Rating
4,026 Ratings
Verified Buyer Rating
3,535 Ratings
Average Flavor Rating
10 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.
Sep 17, 2019
Verified Buyer

I was all set to like this product until I realized that it contains 300mg of caffeine. That is a lot of caffeine. Much more than my body can handle.

Sep 13, 2019

The product itself is pretty good but the price/serving is bad. $30 for 20 servings is poor at best. I can easily get $30 for 30 servings with several other brands. Those brands also list all ingredients. This brand is too expensive for all the products. A bit too much hype over being designed by a doctor.

Sep 11, 2019
Verified Buyer
  • 7 Orange Mango
  • 10 Cherry Limeade

Cherry limeade is the best flavor I've tried so far. But it's a pretty hard flavor to mess up. I picked this up after the awards. Pretty good stuff. I can see why people join the Jym army. However, Pre kaged is definitely my favorite.

Sep 10, 2019
Verified Buyer
  • 8 Raspberry Lemonade

I really enjoy this pre-workout, I have used many other pre-workouts in the past but this falls within the top 5 I have had. the only thing I wished it had was a better pump complex, because I feel it lacks just a very small aspect of pump. besides that great product. would deffinantly recommend!

Sep 09, 2019
Verified Buyer
  • 9 Black Cherry
  • 9 Cherry Limeade
  • 10 Refreshing Melon
  • 9 Raspberry Lemonade
  • 9 Tangerine
  • 10 Orange Mango

I've used Pre Jym for 6 years straight and have never had to switch! It's the real deal works every time!

Sep 01, 2019
Verified Buyer

Jym products have changed my life. I have found the motivation to get myself back into the gym and get back into shape thanks to a friend who recommended these products to me as well as the Jim Stoppani training programs 10/10. Thank you Jim Stoppani I'm in the best shape I've been in since my early 20s thanks to your programs and products.

Aug 31, 2019
Verified Buyer
  • 6 Black Cherry
  • 7 Refreshing Melon

Great lift throughout the workout and solid ingredients It is really unfortunate that they do not make Island punch any more.

Aug 28, 2019
  • 10 Tangerine

Generally not a fan of pre-workouts with their grit and after taste. I've experienced none of these issues with Tangerine Pre Jym. The flavor is top notch. If any part of your shaker bottle is white, it will stain over time.

Aug 26, 2019
  • 1 Refreshing Melon

So i used this brand exclusively until they stopped producing the natural flavor. Im allergic to artificial sweetners especially sucrolose, it gives me incredible migraines. I was using raw ingredients for a long time (basically salt water in taste) until i found this company and they had a version of this without sucrolose. Then that ONE flavor didn't sell enough so they discontinued it and now im stuck using inferior preworkouts, prejym was the absolute best but im giving a 1 on review because clearly all they care about is money. Seeing that a doctor is begind the whole thing makes it worse because he knows that sucralose has this effect on many people and doesn't offer a natural version because he don't make as much money. Pretty sad.

Aug 25, 2019
Verified Buyer
  • 10 Cherry Limeade
  • 10 Tangerine
  • 8 Black Cherry
  • 9 Orange Mango
  • 9 Pineapple Strawberry
  • 9 Rainbow Sherbet
  • 10 Raspberry Lemonade
  • 10 Refreshing Melon
  • 8 Strawberry Kiwi

I’ve never had a better pre workout. It doesn’t get me all jittery before a workout and then make me crash afterwards. I used to have to buy multiple products to get all the ingredients that are in this one tub. I would recommend this to anyone starting out and also to anyone that is experienced in lifting.

Aug 25, 2019
Verified Buyer
  • 9 Black Cherry

Been using this stuff for years now and I honestly can’t think of taking another supplement line. Every product gives me the best results! Huge JYM advocate

Aug 24, 2019
  • 10 Strawberry Kiwi
  • 10 Cherry Limeade

I have tried many ore workout drinks and couldn’t take them due to how they affected my heart but with JYM Pre I never have that problem and have been using it for a year now. Plus they taste great and not overly sweet.

Aug 24, 2019
Verified Buyer
  • 10 Black Cherry
  • 10 Tangerine
  • 7 Rainbow Sherbet

The is is the best preworkout I have ever used!!!! I have made amazing gains and the mental focus this stuff gives me is amazing!!! I have not used any other preworkout since I bought this stuff/

Aug 24, 2019
Verified Buyer
  • 10 Tangerine
  • 10 Refreshing Melon

Best supplements I've used EVER. Not only have I made amazing gains but products taste SENSATIONAL. All the ingredients are perfect

Aug 24, 2019
Verified Buyer
  • 10 Black Cherry
  • 10 Tangerine

This is how I start my day, every day be it a training day, or an active rest day. I highly recommend this product!

2 Sizes
30 Servings
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7 Flavors
Refreshing Melon
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Price: $48.99  ($1.63 / Serving)
Flavor Rating: 7.0

What's in JYM Supplement Science Pre Jym Pre Workout

30 Servings Refreshing Melon
Serving Size: 1 Scoop (26g)
Servings Per Container: About 30
Amount Per Serving % Daily Value
Calories 80       
Sodium 10 mg <1%
Total Carbohydrate 3 g 1%**
Total Sugars 2 g       
Includes 2g Added Sugars 4%
Calcium 30 mg 3%
Creatine HCl (as CON-CRET®) 2 g
Beta-Alanine (as CarnoSyn®) 2 g
Betaine (Trimethylglycine) 1.5 g
Taurine 1 g
N-Acetyl-L-Cysteine 600 mg
Alpha-Glyceryl Phosphoryl Choline (as AlphaSize®) 150 mg
Citrulline Malate 6 g
Beet (Beta vulgaris L.) Root Extract 500 mg
L-Leucine 3 g
L-Isoleucine 1.5 g
L-Valine 1.5 g
L-Tyrosine 1.5 g
Caffeine Anhydrous 300 mg
Huperzine A [from Toothed Clubmoss (Huperzia serrata) Aerial Parts Extract] 50 mcg
Black Pepper (Piper nigrum) Fruit Extract (as BioPerine®) 5 mg
** The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
† Daily Value not established
Dextrose, Natural and Artificial Flavors, Sucralose, Acesulfame Potassium, Calcium Silicate, FD&C Yellow #5, FD&C Red #40.
ALLERGEN WARNING: Produced on shared equipment that also produces products that may contain EGG, MILK, SOY, TREE NUTS, and WHEAT.

Directions For Pre Jym Pre Workout: Mix 1 scoop of Pre JYM in 14oz. of water and drink 30-45 minutes before workouts.

Warnings: Check with a qualified healthcare professional before taking this product. Do not use if you are sensitive to caffeine, pregnant or nursing a baby, under 18 years of age, have any known or suspected medical conditions, and/or if you are taking any prescription or OTC medications. Pre JYM is an incredibly strong pre-workout matrix that contains 300mg caffeine per serving, the equivalent of approximately 3 cups of coffee. Avoid using with any other caffeinated products. Too much caffeine may cause nervousness, irritability, sleeplessness, and, occasionally, rapid heartbeat. Always begin use with 1/2 scoop or less and assess your tolerance. Once tolerance is assessed, take a maximum dose of 1 scoop. To avoid sleeplessness, do not consume within 6 hours of bedtime. Concerning California Residents: This product contains chemicals known to the State of California to cause cancer and birth defects or reproductive harm. KEEP OUT OF REACH OF CHILDREN.

* 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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