Pre JYM Pre Workout Powder
JYM Supplement Science

Pre JYM Pre Workout Powder

A fully dosed pre-workout of 13 powerful ingredients working together to prime athletes for intense training sessions every time.*
The non-proprietary legends at Jym have engineered the Pre Jym powerhouse pre-workout to promote muscle growth, increased energy levels, strength, and boosting endurance so you can push through longer, more intense workouts in the gym.*
9.1  out of 10  (4,127 Reviews)
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Product Overview

Packing May Vary

True-Performance Pre-Workout

Strength* Energy* Endurance* Mind*

Pre JYM Containers

5 Must-Have Ingredients

6g BCAAs
6g Citrulline Malate
2g Creatine HCl
2g Carnosyn Beta-Alanine
1.5g Betaine
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 Powder
Overall Rating
4,127 Ratings
Verified Buyer Rating
3,618 Ratings
Average Flavor Rating
12 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.
Aug 07, 2020
Verified Buyer
  • 7 Pineapple Strawberry

I took this and it doesn't help me focus at all. I do not get any benefit out of this pre-workout. This pre-workout had me running to the bathroom and made me bloated. It did not help me workouts it only hindered it. I thought at first when I took it maybe it was just me, but I took it multiple times now and I keep running to the bathroom with it. It just makes me feel bloated. The scoops are huge. I feel like they just put a lot of fillers with this pre-workout. I hate throwing stuff away, but if I have to use the bathroom multiple times after taking it I had to just throw it away. I hate giving one star reviews because I feel like its bad but if I had to throw it away there is something wrong with the product. I have taken the EVL - Shred pre-workout and I had no problems. I was just looking to change it up a bit and see if there was anything better, but I would stay away from this one. I know it says best seller, but it's not worth it at so many different levels. I really wanted this one to work, but it didn't for me not saying it won't for you, but this was my experience with this product.

Aug 06, 2020
Verified Buyer
  • 7 Pink Lemonade

Not a caffeine person? Then stay away, if not Stay awake the whole night. the product gives a good pump but i never could continue using it due to the high caffeine volume that kept me awake at whatever the time i took this. even the day i took it around noon i coudlnt sleep until 3-4am. but other than that it's good stuff.

Aug 02, 2020
Verified Buyer
  • 10 Raspberry Lemonade

Raspberry Lemonade Best of all the Jym pre-workout flavors. Been using JYM supplements for years recommend #1 in the industry for a reason.

Jul 28, 2020
Verified Buyer
  • 10 Grape Candy
  • 10 Pink Lemonade

I have been using pre jym for a couple years now and it is easily the best pre-workout on the market. He was one of them is not the first to you list all the ingredients at the exact dosage levels which earned my respect. I always fuel energized but never get that jittery feeling or crash after using this supplement. You can't go wrong with any of the flavors and raspberry lemonade was my favorite for a long time until he recently came out with grape candy. Raspberry lemonade is definitely a 10 for me and if there was a rating higher for grape candy then I would put it up there because it's simply wonderful. With either of those two flavors you forget that you are drinking a pre-workout and feel like you were drinking one of your favorite beverages.

Jul 24, 2020
  • 10 Refreshing Melon

Refreshing melon is the best flavour by far!! Its delicious. Pre jym makes my workout 100 times more enjoyable; I can lift more, my muscles don’t get as sore, and I get an overall significant boost in my mood and energy. Love this product. Caffeine alone won’t give all the benefits that come from the other ingredients in pre jym. I’m surprised that there aren’t more people who like refreshing melon, its my go to. Personally not a fan of the new grape flavour... I find it really tart and bitter but it depends on the person. They should offer mini samples of every flavour so that people can try them and find the one they like best.

Jul 24, 2020
Verified Buyer
  • 7 Rainbow Sherbet
Jul 20, 2020
  • 6 Raspberry Lemonade

This product has always been out of my price range and probably for good reason. It’s a great working pre but the flavor is a little off to me. I wish it tasted more natural. Usage: 3/4 scoop at 5-6am with 5 oz water Feels: it kicks in very fast 1 full scoop makes my heart pound out of my chest. No strong tingles and just good clean feeling Thoughts: this is a great pre for heavy lift days or bw days and even bike rides. This product doesn’t give you an over aggressive pump. Just the right amount and when the workout gets hard it feels like you get a second wind and pushes you further. Overall: it gives great feeling and works spectacular. I gave it a 9 due to taste. Will buy a diff flavor next time

Jul 18, 2020
Verified Buyer
  • 8 Grape Candy

The taste is pretty **** good. Grape juice is the first thing that comes to mind when you take this. The after taste is why this gets an 8 flavor-wise. For anyone who’s taken an amino supp, you know the aftertaste can be off-setting. This has aminos in it. Results wise, this hit you pretty good and gets you going in the gym. You wont get tired. You’ll feel it working its magic as you progress through your session. No jitters, just mental alertness and a feeling like you can go beyond your normal session.

Jul 16, 2020
  • 2 Black Cherry

I earned $5000 ultimate month by using operating online only for 5 to 8 hours on my computer and this was so smooth that i personally couldn't accept as true with before working on this website.COPY THIS SITE..............

Jul 14, 2020
Verified Buyer
  • 7 Black Cherry
  • 8 Cherry Limeade
  • 7 Grape Candy
  • 6 Orange Mango
  • 6 Pineapple Strawberry
  • 8 Pink Lemonade
  • 5 Rainbow Sherbet
  • 8 Raspberry Lemonade
  • 7 Refreshing Melon
  • 10 Tangerine
  • 6 Strawberry Kiwi

PreJym is the best bang for the buck(price per serving) preworkout that I've tried. I've tried over 40 preworkouts now and I keep coming back to PreJym. I like the dosages of the correct ingredients and a transparent label. I always get a great workout with this preworkout. I use the Pre and Post Jym. I've been using Jym products for several years now and have tried every flavor of PreJym at least twice. My favorite flavor is tangerine because it's a fairly mellow citrus flavor and doesn't upset my stomach. My wife really likes the Orange Mango, Black Cherry and Grape Candy flavors. She says Grape Candy is the most sweet of the 3, Black Cherry is more tart and Orange Mango is in the middle of those two. I don't particularly love those flavors but they're okay. My least favorites would be the Strawberry Kiwi(I usually really like this flavor with other things) and Refreshing Melon. With that said, if those were the only flavors available I'd still use PreJym with no major complaints. For me these flavors give me mild discomfort with my stomach, I'm guessing it's a color or flavor addictive specific to these flavors that doesn't agree with me. My go-to flavors that I cycle between would be Tangerine, Cherry Limeade, Raspberry lemonade and Pink Lemonade. As a product PreJym is fantastic, it gives me the longest lasting energy and pump of any preworkout. With that said, I have a high tolerance to stimulants. I can have a cup of coffee and take a nap(I don't but I could). Even after years of use, PreJym will keep me up at night after a solid 90 minute, sweat dripping workout if I take it too late in the day. I recommend using this in the morning if you are concerned about it affecting your sleep at all. I do wish that Dr. Stoppani would make a lower caffeine version for those of us that workout in the evening. Between work, school and life I can't always workout in the morning and but I don't want to cut the dosage of the other ingredients by taking a half scoop. A 150mg to 200mg caffeine version would be perfect. That may be an unpopular opinion for the stimulant junkies but for me, quality sleep is a key ingredient for recovery but I recognize the countless studies backing the benefits of caffeine for physical performance. Overall, I can't recommend PreJym enough. Just find the right flavor for you and use it/workout at least 6 hours before you go to bed.

Jul 13, 2020
Verified Buyer
  • 1 Grape Candy

Grape is gross

Jul 10, 2020
Verified Buyer
  • 10 Pineapple Strawberry
  • 10 Grape Candy
  • 10 Rainbow Sherbet

Taste is great and it definitely helps me get the job done. I wouldn't dare try to work out without it

Jul 09, 2020
Verified Buyer
  • 10 Tangerine

Love tangerine pre jym.Best Preworkout I have ever tried.No jitters,just energy.

Jul 05, 2020
  • 7 Black Cherry
  • 7 Rainbow Sherbet
  • 10 Pineapple Strawberry
  • 7 Strawberry Kiwi

Great pre-workout powder. Be sure not to drink too fast and drink plenty of water after. I like mixing mine with ice. Pineapple strawberry is my favorite.

Jun 29, 2020
Verified Buyer
  • 10 Refreshing Melon

I don't know why Refreshing Melon doesn't get no love! This is the only flavor I buy for myself. The other flavors are good too but this one is my fave. On top of having the best ingredients backed by science this flavor is, well refreshing...

2 Sizes
30 Servings
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11 Flavors
Grape Candy
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Price: $48.99  ($1.63 / Serving)
Flavor Rating: 8.7
The non-proprietary legends at Jym have engineered the Pre Jym powerhouse pre-workout to promote muscle growth, increased energy levels, strength, and boosting endurance so you can push through longer, more intense workouts in the gym.*

What's in JYM Supplement Science Pre JYM Pre Workout Powder

Serving Size: 1 Scoop (25g)
Servings Per Container: About 30
Amount Per Serving % Daily Value
Calories 70       
Sodium 100 mg 4%
Total Carbohydrate 1 g <1%**
Total Sugars 0 g
Includes 0g Added Sugars 0%
Calcium 49 mg 4%
Potassium 36 mg 1%
Creatine HCI (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 vulagris) 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
Natural Flavor, Sodium Citrate, Fruit and Vegetable Juice (Color), Calcium Silicate, Sucralose, Acesulfame Potassium, Dextrose.
Produced on shared equipment that also produces products that may contain EGG, MILK, SOY, TREE NUTS, and WHEAT.

Directions For Pre JYM Pre Workout Powder:

As a dietary supplement, mix 1 scoop of Pre JYM™ in 16-24 oz. of water and drink 30-45 minutes before workouts. Initially use 1/2 serving or less to assess tolerance. Once tolerance is assessed, take no more than 1 serving. To avoid sleeplessness, do not consume within 6 hours of bedtime.

For better results, consider using Post JYM Recovery Matrix™ after workouts.

Warnings: DO NOT USE IF YOU ARE UNDER THE AGE OF 18, PREGNANT OR NURSING, HAVE ANY KNOWN OR SUSPECTED MEDICAL CONDITIONS, ARE TAKING ANY PRESCRIPTION OR OVER THE COUNTER MEDICATIONS, OR SENSITIVE TO CAFFEINE. Consult with a qualified healthcare professional before using this or any other dietary supplement. Contains 300mg of caffeine per serving, the equivalent of approximately 3 cups of coffee. DO NOT USE WITH ANY OTHER CAFFEINATED PRODUCT. Too much caffeine may cause nervousness, irritability, sleeplessness and/or rapid heartbeat. Immediately discontinue use and consult your doctor if any adverse reactions occur.


Store at 15-30°C (59-86°F). Protect from heat, light and moisture. Do not use if seal is broken.

* 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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