Pre JYM
JYM Supplement Science

Pre JYM

Food Supplement
Pre Workout with High Quality Ingredients
9.1  out of 10  (3,898 Reviews)
1 Size
30 Servings
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Cherry Limeade
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Price: £39.99  (£1.33 / Serving)
Flavor Rating: 8.5

Product Overview

"Welcome to my latest creation, JYM Supplement Science. JYM combines real science with real ingredients to deliver unreal results. Pre JYM, my cutting-edge pre-workout product, has revolutionized the pre-workout category."

Supplement companies love to claim they've created a real “game-changer.” Pre JYM doesn't play that game. It doesn't need hype or flashy marketing. With 13 hand-picked ingredients included at full amounts, Pre JYM is in a league of its own.

Put simply, Pre JYM is the most effective pre-workout supplement I've ever developed. It's built on solid science and decades of professional experience. Nothing is hidden, and there is no filler. Pre JYM is research made real. It's pure pre-workout fuel."

Hit the JYM!

Jim Stoppani, PhD
Owner, JYM Supplement Science


The Power of Pre JYM
No Proprietary Blends

Look at the supplement facts panel on your favorite pre-workout product and you'll most likely see the term “proprietary blend.” Supplement companies want you to think this means they've created a special blend of ingredients that magically work together to deliver unique results. Because this blend is so amazing, they have to keep the amounts of each ingredient secret so no other company steals the formula.

The truth, however, is that propriety blends can serve a different purpose. They allow some supplement companies to hide how little of each ingredient they've actually put in a product. This can result in cheap, under-dosed, ineffective supplements.

Pre JYM doesn't use proprietary blends. Take a look at the supplement facts panel and you'll see the actual amounts of all ingredients. I have nothing to hide. I'm proud of the amount of each and every ingredient I've included.

Proper Amounts

For the reasons detailed above, many supplement companies are moving toward transparency and axing proprietary blends. That's a good thing. However, some of these companies are still guilty of grossly under-dosing ingredients.

Take citrulline malate, for example. The research on this potent amino acid shows that you need 6 grams per serving. Most pre-workout products leave out citrulline entirely, and only a few of them provide anywhere close to 6 grams.

No "Abbreviated" Formulas

A handful of companies are as fed up as I am with proprietary blends and under-dosed formulas, but they fall short by using “abbreviated” formulas. An abbreviated formula is one that uses proper dosing of all ingredients, but only includes a few ingredients.

Take, for example, a pre-workout formula that includes beta-alanine, creatine, caffeine, and tyrosine. There's nothing wrong with it, but it could be made a lot more effective through the addition of ingredients like citrulline malate, betaine, and BCAAs, to name just a few. Why would companies not create the most robust formula possible? Because adding more ingredients costs too much money.

Pre JYM includes ingredients that complement one another to prime the body for intense workouts, making it a complete pre-workout supplement. If you're looking for the most complete exercise supplement program available on the market today, take my Post JYM Active Matrix after your workout to get even greater amounts of potent ingredients like Creatine HCl, Betaine, and Beta-Alanine.

No Concentrates

Some companies also try to trick buyers by calling their pre-workout product “concentrated.” A serving of one of these “concentrated” products can contain as few as 3 to 6 grams of powder. What kind of magic did they use to cram enough creatine, beta-alanine, citrulline, arginine, caffeine, and other ingredients into that tiny serving? They didn't use any magic, which is why some of those “concentrated” formulas also include proprietary blends. That's also why the serving size of Pre JYM is more than 26 grams. It contains ingredients at proper, powerful amounts.

JS, Not BS

I've been studying supplement science in the lab and gym for decades. I've been delivering supplement advice to millions of people in the pages of Muscle & Fitness, FLEX, and Muscle & Fitness Hers, as well as here on Bodybuilding.com and my own website, JimStoppani.com, for over a decade.

Most importantly, I've been training since I was 11 years old. Before each of my workouts, I would draw on all of my experience and all of my education to concoct my own pre-workout supplement, combining ingredients from 13 different bottles and tubs.

That's why I developed Pre JYM. I wanted to give my friends, colleagues, all of you, and myself the ability to access, in one bottle, the best ingredients in amounts suggested to support your fitness goals.


Pre JYM Active Ingredients Matrix Features
  • Full amounts of 13 science-backed ingredients.
  • 6 grams of citrulline malate
  • 6 grams of BCAAs in the 2:1:1 ratio
  • 2 grams of creatine HCl
  • 2 grams of CarnoSyn® beta-alanine
  • 1.5 grams of betaine
  • 600 milligrams of N-acetyl L-cysteine
  • 500 milligrams of Beet Root extract
  • 300 milligrams of caffeine
  • 150 milligrams of AlphaSize® alpha-GPC
  • 5 milligrams of BioPerine®

Under the Microscope

Let's take a closer look some of the ingredients and amounts used to make Pre JYM such a pre-workout powerhouse.*

6 grams of Branched-Chain Amino Acids (BCAAs)
  • The BCAAs are three amino acids—leucine, isoleucine, and valine—that share a common structure.
  • Research suggests that leucine is the most critical because it stimulates muscle protein synthesis.
  • Studies suggest the optimal ratio of leucine to isoleucine to valine in a pre-workout product is 2:1:1, exactly the ratio in Pre JYM.
6 grams of Citrulline Malate
  • In the body, citrulline is readily converted to arginine, and then to nitric oxide (NO). Research suggests that citrulline increases arginine and NO levels in the body better than arginine itself. Arginine undergoes excessive breakdown by the intestines and liver. Studies have shown that citrulline does not, so whatever you consume is readily absorbed and put to use.
2 grams of Creatine HCl
  • Creatine increases physical performance in successive bursts of short-term, high intensity exercise. The beneficial effect is obtained with a daily intake of 3g of creatine.
  • Creatine HCl is made by attaching a hydrochloride (HCl) group to creatine.
2 grams of CarnoSyn® Beta-Alanine
  • Beta-alanine is an amino acid that gets taken up by muscle fibers and combines with the amino acid histidine to form carnosine.
500 mg of Beta Vulgaris L. (Beet) Extract
  • Beet root extract is a rich source of nitrates. When you consume nitrates, they are broken down first to nitrites and then to nitric oxide (NO).
  • Beet root extract is a direct supplier of NO and uses a different pathway to produce NO than citrulline and arginine!
  • Research suggests that nitrates can improve blood flow to working muscles and the brain.* The result is greater training intensity and endurance, and increased focus during workouts.*
1.5 grams of Betaine
  • Betaine, also known as trimethylglycine (TMG), is a modified version of the amino acid glycine.
300mg of AlphaSize® Delivering 150mg of Alpha-Glyceryl phosphoryl choline (Alpha-GPC)
  • Alpha-glyceryl phosphoryl choline (alpha-GPC) is a naturally occurring phospholipid compound.
600mg of N-Acetyl L-Cysteine (NAC)
  • NAC is the amino acid cysteine with an acetyl group attached to it.
300mg of Caffeine
  • Caffeine contributes to an increase in endurance capacity and may help to increase alertness and concentration. Do not exceed a daily intake of 300 mg of caffeine. The beneficial effect is obtained with caffeine consumption at doses of 3 mg/kg body weight at least one hour prior to exercise.
  • 5 mg of BioPerine®
    • BioPerine® is a patented extract of the fruit of black pepper, or long pepper, that contains standardized amounts of the active ingredient piperine.
JYM Supplement Science

Ratings & Reviews

Overall Rating
9.1
3,898 Ratings
Verified Buyer Rating
9.1
3,431 Ratings
Average Flavor Rating
8.3
9 Flavors
Top Rated Flavor
8.5
Cherry Limeade
By clicking the button above, you agree to entering the Bodybuilding.com Reviews section. Products in the Store are not intended to diagnose, treat, cure, or prevent any disease.
Nov 17, 2018
10
Verified Buyer
  • 10 Black Cherry
  • 10 Cherry Limeade

This product is great! My first review, I'm 55 lifting for 30 yrs.Tried hundreds of sups. Most pre's do nothing or give you the jitters so bad you can't focus. I use full scoop, after approx 20min i can feel it, but nothing ridiculous, My pumps are longer, my sets and reps are longer.while its not the cheapest. It's the best I have found for a long time. I will definitely aquire and test some more of JYM's supplement's.

Nov 16, 2018
10
 
  • 7 Black Cherry
  • 1 Rainbow Sherbet

This is the best pre-workout hands down. The first time I tried it I seen results instantly. After I ran out I tried other pre-workouts and they did not come close to JYM so I went back to it and felt great and haven't stopped using it since.

Nov 13, 2018
10
Verified Buyer
  • 10 Orange Mango

I received this product in the mail from the seller. When I opened the package the seal on the container was torn in half. I contacted customer service and they sent out a new item immediately. Great product and amazing customer service.

Nov 12, 2018
10
Verified Buyer
  • 10 Refreshing Melon
  • 9 Black Cherry
  • 10 Orange Mango
  • 9 Raspberry Lemonade
Nov 11, 2018
9
 
  • 5 Refreshing Melon

Like many others i've tried alot of pre workouts in the past and i can safely say this stuff works. I like it especially in the fact i dont crash or get a messed up headache. Will be looking forward to a different flavour though.

Nov 11, 2018
2
 
  • 2 Cherry Limeade

Same stuff like other prenworkout , Id rather buy a good amino prenworkout then this

Nov 07, 2018
9
Verified Buyer
  • 9 Orange Mango

I like it. But how serious is this? “Concerning California Residents: This product contains chemicals known to the State of California to cause cancer and birth defects or reproductive harm” ?

Nov 04, 2018
10
 
No written review.
Nov 02, 2018
10
Verified Buyer
  • 10 Orange Mango

Orange Mango is DELICIOUS, especially for morning workouts! I have tried several brands and this is the ONE. I only hate that I have to wake up an hour early so that I can take it,but it's worth it. I am becoming a true JYM believer.

Oct 26, 2018
10
 
  • 10 Orange Mango
  • 9 Raspberry Lemonade
  • 8 Pineapple Strawberry
  • 9 Cherry Limeade
  • 8 Rainbow Sherbet

The pre workouts are top of their class. They aren't going to give you the tingling sensation like the other pre's out there. This pre is about focus, endurance, and over all increase in strength. The scoop size is massive compared to other products but for good reason. There are A LOT of good ingredients in it. You're not getting all that in a little teacup scoop that claims to have 15 ingredients. It's just not physically possible, hence the big scoop. I highly recommend this product.

Oct 26, 2018
9
Verified Buyer
  • 8 Raspberry Lemonade

I’ve only gotten the one flavor multiple times. It’s a lot to drink but that’s what you get if you want everything in one drink. I love it because I got tired of buying all this s#it separately.

Oct 24, 2018
2
 
  • 1 Refreshing Melon

Not impressed with this product. I wanted something different from my normal pre work out and decided to go with JYM. First of all, the scoop is equivalent to a protein scoop. Way to large of a serving. The flavor is bitter and sour, doesn’t even taste good. I would not recommend this product as a pre work out.

Oct 23, 2018
8
 
  • 9 Raspberry Lemonade

I bought some of this stuff a few years ago and I'm about to buy some more. It definitely increases pumps and makes me want to work out more. It got me out of a plateau. I caution about the dosing. I can't do a whole scoop. I do at most a 1/4 scoop.The only time I've ever had anxiety attacks is if I take more than 1/2 have a scoop of this stuff. I drink a fair amount of coffee and have never had this issue before. The strawberry lemonade tastes pretty good at first. There are sometimes some crystals left at the bottom of the glass that are really sour and you have to just chug it. After about 8 months it starts to cake and taste nasty. At 3 years it's basically inedible and the potency is questionable, so I'm buying more. My baby doses last me forever. tldr; Pros It works No hidden ingredients Cons Too much caffeine Tastes nasty if you don't go through it fast enough.

Oct 20, 2018
10
Verified Buyer
  • 9 Orange Mango

Obviously pricey per serving, but with good reason. Once you use Pre JYM and the rest of the JYM system, you'll see why you get what you pay for and why its hard to go back. If you can get past the stomach discomfort you may get when drinking Pre-JYM, the results will speak for themselves in the gym

Oct 19, 2018
9
Verified Buyer
  • 9 Refreshing Melon
  • 8 Orange Mango
  • 9 Cherry Limeade
  • 5 Strawberry Kiwi

Another go to product that I love when I have the extra money. Jym products are clinically dosed which is great and the flavors are typically phenomenal minus one or two. The only real issue I have with the products is the price.

30 Servings
30 Servings
£1.33 Per Serving
£39.99

What's in JYM Supplement Science Pre JYM

Serving Size: 1 Scoop (26g)
Servings Per Container30
Per 26g Portion % Reference Intake
Energy (KJ) 335 kJ 15%*
Energy (kcal) 80 kcal       
Carbohydrate 3 g 1%*
Of Which Sugars 2 g **
Salt (As Sodium Chloride) 240 mg 4%*
Citrulline Malate 6 g **
L-Leucine 3 g **
L-Isoleucine 1.5 g **
L-Valine 1.5 g **
Creatine HCI (as CON-CRET®) 2 g **
Beta-Alanine (CarnoSyn®) 2 g **
Betaine (Trimethylglycine) 1.5 g **
L-Tyrosine 1.5 g **
Taurine 1 g **
Beet (Beta vulgaris) Root Extract 500 mg **
Choline Bitartrate 350 mg **
Caffeine Anhydrous 300 mg **
Alpha-Glyceryl Phosphoryl Choline (as AlphaSize®) 150 mg **
N-Acetyl L-Cysteine 100 mg **
Black Pepper (Piper nigrum) Fruit Extract (as BioPerine®) 5 mg **
* Reference Intake of an average adult (8400kJ/2000 kcal).
** Reference Intakes not established.
Other Ingredients:
Citrulline Malate, L-Leucine, Creatine Hydrochloride (as CON-CRET®), Beta-Alanine (as CarnoSyn®), Dextrose, L-Isoleucine, L-Valine, L-Tyrosine, Betaine (Trimethylglycine), Taurine, Sodium (as Disodium Phosphate), Sweeteners (Sucralose, Acesulfame Potassium), Flavouring, Beet (Beta vulgaris) Root Extract, Choline Bitartrate, Caffeine Anhydrous, Alpha-Glyceryl Phosphoryl Choline (as AlphaSize®), N-Acetyl L-Cysteine, Stabilisers (Cellulose Gum, Xanthan Gum, Carrageenan), Colour (Allura Red AC), Black Pepper (Piper nigrum) Fruit Extract (as BioPerine®).
For allergens, see ingredients in bold. Produced on shared equipment that also produces products that may contain EGG, MILK, SOYA, TREE NUTS, WHEAT.

Directions For Pre JYM: As a Food Supplement, mix 1 scoop of Pre JYM™ in 400 to 1000 mL of water and drink 30-45 minutes before workouts. Consider allowing Pre JYM to mix for 10-15 minutes before drinking. Also consider drinking it over the course of 15-30 minutes. 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.

Warnings:

Flavoured Food Supplement Powder with Amino Acids, Caffeine and Sweeteners

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 food 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.

Allura Red AC and Tartrazine may have an adverse effect on activity and attention in children. Do not exceed the recommended daily amount. This product should not be used as a substitute for a varied diet or a healthy lifestyle. KEEP OUT OF REACH OF CHILDREN

Manufactured in the US for: Bodybuilding.com (UK) Ltd. Units 7-8 Foster Avenue Dunstable, Bedfordshire, LU5 5TA.

* 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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