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  (4,037 Reviews)
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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

Pre Jym Pre Workout
Overall Rating
4,037 Ratings
Verified Buyer Rating
3,542 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.
Oct 19, 2019
  • 5 Refreshing Melon

great product very effective. But if you need up-to 50% Dissc0unt on UK#1 Whey protein Use this Refferal Cod>: "JACLYN-R54" while sign up on My protein,com.!!!!!!!!

Oct 17, 2019
  • 2 Cherry Limeade

I've tried over 13 different pre work brands in totally. This brand didn't deliver for me. I found that my focus was all over the place, I struggled to maintain mind muscle connection, therefore I couldn't get great activation on the muscles I was trying to work. The pump was non existent and my workout was "Dry!" I couldn't stop yawning through my workout. I felt a sudden crash and my energy levels were totally depleted. It seems to be dosed sufficiently, with a few fermented ingredients. But I will not be using this product ever again. I'm so disappointed, I will stick with my original pre workout. It dosent mean that it won't work well for you.

Oct 14, 2019
Verified Buyer
  • 10 Orange Mango

I love Jym product.I would like to see different flavours on

Oct 11, 2019
  • 7 Cherry Limeade

Did the job, little kick in the azz to get my training started, the flavour was a little too sweet for my liking but bet than some others

Oct 05, 2019
Verified Buyer
  • 9 Pineapple Strawberry
  • 9 Rainbow Sherbet
  • 7 Refreshing Melon
Oct 05, 2019
Verified Buyer
  • 8 Raspberry Lemonade
  • 7 Cherry Limeade
  • 6 Orange Mango

used a lot of pre-workout products, but this one is the best by far, good range of ingredients with full doses, great focus, strenght and pumps

Oct 03, 2019
Verified Buyer
  • 8 Black Cherry

Great product, I feel better for taking it, the only negative thing I could say about it is it's very sweet.

Oct 02, 2019
Verified Buyer
  • 10 Orange Mango
  • 9 Cherry Limeade
  • 9 Tangerine
  • 9 Raspberry Lemonade

Best pre workout on the market

Sep 30, 2019
Verified Buyer
  • 10 Orange Mango
  • 9 Cherry Limeade
  • 8 Refreshing Melon
  • 8 Tangerine
  • 7 Pineapple Strawberry
  • 7 Rainbow Sherbet
  • 8 Raspberry Lemonade
  • 6 Strawberry Kiwi
Sep 29, 2019
Verified Buyer
  • 5 Cherry Limeade

I bought this pre-work out when it was on sale. I would never consider purchasing it if it wasn’t because it is way too expensive for only 20 servings. I find the flavor very tangy, more so than limeade should be, almost to the point where you can’t straight chug it. I have to sip on it for 20 minutes to get the whole thing down. Even diluting it more doesn’t matter. There is some ingredient in it that dries out my mouth. I am constantly drinking water after it to try and get my mouth to moisten up. I would like to try other flavors but I worry that they will be too tangy just like the cherry limeade. As for the pre-work out pump, it does deliver that for me. I find that I have a little bit more energy to keep moving when I normally would stop. Overall it’s not a great value and like I said I would only purchase it again if it was on sale.

Sep 24, 2019
  • 9 Refreshing Melon

Bought this product at my local supplement store and it's insane. No wonder it's the top selling pre-workout. The refreshing melon flavor tasted like a mix of orange and mango; it was delicious but sickly sweet. I recommend adding extra water to have a more balanced serving. The effects: Clean and powerful. Assuming you take it as directed there was no nauseating onset, jitters, or tingly sensations with this product. Most preworkouts you can just take the whole scoop at once but with this product you should TAKE ACROSS 10-15 minutes, otherwise you'll feel dizzy and your performance won't be too good. The effects lasted well over an hour and there was no crash. Performance: Man. You do heavy squats when you're on this stuff and you'll feel like the weights are "floating". Buttery smooth reps. Front squats in particular felt like nothing back when I took this several months ago. This is great stuff.

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!

2 Sizes
20 Servings
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8 Flavors
Black Cherry
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Price: $37.99  ($1.90 / Serving)
Flavor Rating: 6.7

What's in JYM Supplement Science Pre Jym Pre Workout

20 Servings Black Cherry
Serving Size: 1 Scoop (26g)
Servings Per Container: About 20
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%
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, Caramel Color, FD&C Red #40, FD&C Blue #1, Calcium Silicate
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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