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Jym Pre Jym Pre Workout Review – Ingredients, Side Effects & More

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Jym Pre Workout

Launched in 2013, Pre Jym has quickly risen as one of the heavy hitters in the supplement industry. Jym Pre Workout features no proprietary blends and is designed to increase energy levels, promote lean muscle mass and provide sustained endurance. Pre Jym is manufactured by Jym Sport Supplements in the United States, which is owned by the creator, Jim Stoppani. Pre Jym is available in three flavors: Raspberry Lemonade, Cherry Limeade, and Orange Melon.

Jim Stoppani received his Ph.D. in exercise physiology with a minor in biochemistry. He’s won prestigious awards such as the Gatorade Beginning Investigator in Exercise Science Award, written thousands of articles, co-authored several books, has served as a personal trainer to celebrity clients and developed the Platinum Diet.1,2

pre jym pre workout review

Jym Pre Workout Ingredients

Here we provide a breakdown of the active ingredients used in Pre Jym. With no proprietary blends, users can easily identify exactly what they’re consuming and verify that the formula is free of cheap filler ingredients often used to bolster products. Read below for our in-depth analysis of these ingredients and how they work to maximize performance in the gym.

Creatine Hydrochloride: 2 g – Creatine hydrochloride (Creatine HCl) is a variation of creatine, a well-researched molecule that helps in the production of ATP (energy) and has been observed to increase power output, promote lean mass and fight fatigue.3

Beta-alanine supplementation has been clinically shown to increase muscular endurance by 60-240 seconds.23

CarnoSyn® Beta-Alanine: 2 g – Carnosyn, a patented ingredient and registered trademark is a form of beta-alanine, the precursor to carnosine, a molecule which helps buffer acid levels in the muscle.

Beta-alanine acts as a pH buffer and helps delay the ‘burning’ sensation experience during high-intensity exercise. Emerging evidence shows that combining creatine with beta-alanine may further enhance endurance performance.24
Betaine (Trimethylglycine): 1.5 g – Originally discovered as a component of beet root, betaine is a methyl donor and helps support methylation throughout the body. Methyl donors, such as betaine are critical for energy metabolism and are required for the transfer of methyl groups from donor molecules to accepter molecules. This process of methylation helps regulate protein synthesis and RNA processing throughout the body.27 Increased levels of betaine help regulate water in cells similar to creatine, which is potentially beneficial during physical activity.5

Taurine: 1 g – As one of the most abundant amino acids in the human body, taurine is commonly found in Type II muscle fibers. In terms of performance, taurine has been observed to help increase muscle strength, mass, power and help reduce muscle damage induced by exercise.6.7

Pre Jym IngredientsN-Acetyl L-Cysteine: 600 mg – When taken as a supplement, N-Acetyl L-Cysteine is broken down in the body to create cysteine, an amino acid and a building block of protein.

Alphasize® (Alpha-Glyceryl Phosphoryl Choline): 300 mg – Alpha-Glyceryl Phosphoryl Choline (Alpha-GPC) is a cholinergic compound traditionally used to improve cognition. However, it has been observed to also increase the production of growth hormone which is linked to adaptive responses such as increased muscle mass and decreased fat mass.11,12

Citrulline Malate: 6 g – As a precursor to nitrogen oxide, citrulline malate has been shown to reduce muscle soreness after high-intensity exercise. Consuming citrulline malate has been documented to increase nitric oxide production which leads to enhanced blood flow, muscle repair, as well as glucose and fatty acid metabolism.13

Beta vulgaris L. (beet root extract): 500 mg – Beta vulgaris L. or beet root extract is thought to be high in nitrates and antioxidants, with its use being documented since the Roman Empire.28 Preliminary in vitro tests on rats and humans show evidence that beet root extract may prevent oxidative stress on molecules and decrease blood pressure. 15 The dosage of beet root extract used in the clinical test was 500mg, the same amount found in Jym Pre Workout.

L-leucine: 3 g – L-leucine is one of three essential branched chain amino acids(BCCAs). As it’s not manufactured in the body, L-leucine must be consumed through diet or supplements. Branched chain amino acids decrease muscle damage, as well as promote muscle-protein synthesis and muscle mass increase. For increased benefits, L-leucine must be combined with other branched chain amino acids such as L-valine or L-isoleucine.16 In Pre Jym, L-leucine is combined with L-isoleucine and L-valine in a 2:1:1 ratio.

L-isoleucine: 1.5 g – The second essential BCAA, L-isoleucine is the isomer of leucine and can be found in numerous proteins. L-isoleucine has a diverse set of functions which include: promoting hormone secretion, regulating blood and energy levels, promoting wound healing and detoxifying the body of nitrogenous waste.17

L-valine: 1.5 g – The third essential BCAA, L-valine has stimulant properties which work to promote muscle growth, repair muscle tissue and increase energy. L-valine also assists in mental focus and muscle coordination.18

Pre Jym won the 2015 Pre Workout Supplement of the Year, as voted by readers on Bodybuilding.com.

L-tyrosine: 1.5 g – L-tyrosine is a non-essential amino acid produced by the body. This amino acid contributes to protein synthesis, organ function and structurally plays a role in almost every protein in the human body.19,20 It also assists in the production of chemicals such as a dopamine, which elevates moods.20

Caffeine anhydrous: 300 mg – Caffeine anhydrous is a concentrated form of caffeine where 99.5% of water has been removed. Caffeine works as an ergogenic aid that has been shown to increase speed, endurance and possibly power output. Caffeine anhydrous is often found in dietary supplements and as research indicates, it may be easier to absorb in this form and is possibly more potent than regular caffeine.21

Huperzine A: 50 mcg – Huperzine A belongs toholinergic (nerve cells or fibers that use acetylcholine as their neurotransmitter) class of molecules. It plays an interesting role in improving mental function and is thought to inhibit an enzyme which slows down the learning process. While research is ongoing, the learning neurotransmitter it helps to protect, acetylcholine, is involved in muscle contractions.22

BioPerine® (Piper Nigrum Fruit Extract): 5 mg – A patented ingredient, BioPerine is a black pepper extract which claims to help the absorption of fat-soluble vitamins, water-soluble vitamins (vitamin B6, vitamin C) and several acids and coenzymes.25 This is important because it helps ensure that these beneficial vitamins and ingredients are absorbed and not just passed through the body.

Jym Pre Workout Directions

As recommended on the Pre Jym label, users should mix 1 scoop with 14 oz of water. This should be consumed 30-45 minutes working out.

Pre Jym Side Effects

While the ingredients used in Pre Jym have been scientifically observed and generally regarded as safe, minor side effects may still occur.

Jym Pre Jym Pre Workout side effects

Possible side effects of Pre Jym are mainly associated with the high dose of caffeine anhydrous. For reference, one scoop is equivalent to three cups of brewed coffee. Users who are sensitive to caffeine may experience nervousness, irritability, headaches or rapid heartbeat. When taken too close to bedtime, caffeine can cause sleeplessness. In rare cases it may cause dark, bloody stools.

In the body, creatine retains water in the muscles. This may lead to minor weight gain which can be offset by following a consistent workout routine. When supplementing with creatine, make sure to take with enough water as too little can cause stomach irritation or gas. In rare cases, creatine may cause diarrhea.

Pre Jym contains 2 g of beta-alanine. In most users, this will cause a temporary and harmless tingling sensation on the skin. This is completely normal and should disappear within two hours.

Pre Jym cancer warning.

Dr. Jim Stoppani, owner of Jym Sport Supplements, addressing the controversial cancer statement on the Pre Jym supplement container.

Perhaps shocking to consumers, a carcinogenic warning label appears on the outside of the Jym Pre Jym container. This warning label adheres to California’s Proposition 65, which is exclusive to the state and while serious, should be taken with a grain of salt.

Passed in 1986, the government of California enacted the Safe Drinking Water and Toxic Enforcement Act to help citizens make informed decisions when purchasing products and maintain an active list of known carcinogenic chemicals. The government is required to update the list annually with any chemicals known to the State to cause reproductive toxicity, birth defects or cancer.26

Business owners selling products in California are required by law to display a ‘clear and reasonable warning’ on their products for consumers. Unfortunately, the standard label does not indicate which ingredient is carcinogenic, for which populations, in what dose or what type of exposure.27

As a result, thousands of everyday goods come with this warning label in California, even potato chips.
When searching through the 22-page document, none of the ingredients on the Pre Jym ingredient list appear in their listed form in the August 6, 2016 revision of the Safe Drinking Water and Toxic Enforcement Act.

While none of the listed active ingredients were found in the list of carcinogenic ingredients, the warning is likely based off one of the inactive ingredients, which tend to be in very small amounts. Due to the frequency of this warning on products manufactured in California, it should not deter you from purchasing this product.

JYM Pre Workout Projected Results

Based on the quantity of active ingredients, a review of current scientific studies, and trusted consumer reviews, below are the projected results for Pre Jym.

Jym Pre Jym Pre Workout results

We really like to see that this product is certified by Informed-Choice.org and Informed-Sport.com which both independently test supplements for quality assurance and a broad range of substances banned from sports. In addition, Pre Jym is incredibly transparent about exactly what ingredients you’re purchasing.

Starting with citrulline malate, at 6g per serving this is equivalent to clinical doses which have been linked to increased energy, better recovery and which may help delay fatigue. With such a significant amount, you’re really going to feel extra endurance throughout your workout.

Jym also features 2g of creatine hydrochloride to promote the production of ATP, which should increase your pumps and raise testosterone levels. While 2 grams falls below Health Canada’s recommended amount, the dosage is equivalent to other pre workouts we’ve seen.

With 300mg of caffeine anhydrous, you’re going to experience enhanced focus and feel dialed in during your entire workout. If you are a user who is sensitive to caffeine or tends to exercise at night, this may not be the most suitable pre workout for your lifestyle.

Finally, the presence of BCAAs: L-leucine, L-isoleucine and L-valine in a 2:1:1 ratio will help promote protein synthesis, muscle growth and repair to help you see results.

Where to Buy Jym Pre Workout and Pricing

Wondering where to buy Jym Pre Workout?

Compared to similar pre workout supplements, Jym has limited availability and must be ordered online.

Scientific Research Referenced in this Article

  1. Bodybuilding.com. (n.d.). Jim Stoppani. Retrieved September 2, 2016 from http://www.bodybuilding.com/author/jim-stoppani-phd
  2. Jimstoppani.com. (n.d.). About. Retrieved September 2, 2016 from https://www.jimstoppani.com/#supplements
  3. Examine.com. (n.d.).Creatine. Retrieved September 1, 2016 from – View Reference
  4. Olsen, S., Aagaard, P., Kadi, F., Tufekovic, G., Verney, J., Olesen, JL., Suetta, C., & Kjaer, M. (2006). Creatine supplementation augments the increase in satellite cell and myonuclei number in human skeletal muscle induced by strength training. The Journal of Physiology, 573(2). 525–534.doi: 10.1113/jphysiol.2006.107359
  5. Exmine.com. (n.d.).Trimethylglycine. Retrieved September 1, 2016 from https://examine.com/supplements/trimethylglycine/
  6. Exrx.net. (n.d.). Taurine. Retrieved September 1, 2016 from – View Reference
  7. Geiss, K.R., Jester, I., Falke. W., Hamm, M., Waag, K.L. (1994) The effect of a taurine-containing drink on performance in ten endurance athletes. Amino Acids. 7(1).45-56. doi: 10.1007/BF00808445
  8. Bendahan, D., Mattei, J. P., Ghattas, B., Confort-Gouny, S., Le Guern, M. E., & Cozonne, P. J. (2002). Citrulline/malate promotes aerobic energy production in human exercising muscle. British Journal of Sports Medicine, 36(4), 282-289. doi:10.1136/bjsm.36.4.282
  9. University of Maryland Medical Center. (2014, June 26). Cysteine. Retrieved September 2, 2016 from – View Reference
  10. Dean, O., Giorlando, F., & Berk, M. (2011). N-acetylcysteine in psychiatry: current therapeutic evidence and potential mechanisms of action. Journal of Psychiatry & Neuroscience, 36(2), 78-86. doi:10.1503/jpn.100057
  11. Examine.com. (n.d.). Alpha-GPC. Retrieved September 2, 2016 from – View Reference
  12. Ziegenfuss, T., Landis, J., & Hofheins, J. (2008). Acute supplementation with alpha-glycerylphosphorylcholine augments growth hormone response to, and peak force production during, resistance exercise. Journal of the International Society of Sports Nutrition, 5(Suppl 1), P15. doi:10.1186/1550-2783-5-s1-p15
  13. Stapleton, A. E., & Miller, P. C. (2016). The Effects of Citrulline Malate Supplementation on Muscle Soreness and Contractile Function. Medicine & Science in Sports & Exercise, 48, 255-256. doi:10.1249/01.mss.0000485769.05754.61
  14. Webb, A. J., Patel, N., Loukogeorgakis, S., Okorie, M., Aboud, Z., Misra, S., & Ahluwalia, A. (2008). Acute Blood Pressure Lowering, Vasoprotective, and Antiplatelet Properties of Dietary Nitrate via Bioconversion to Nitrite. Hypertension, 51(3), 784-790. doi:10.1161/hypertensionaha.107.103523
  15. Shimomura, Y., Murakami, T., Nakai, N., Nagasaki, M., & Harris*, R. A. (2004). Exercise Promotes BCAA Catabolism: Effects of BCAA Supplementation on Skeletal Muscle during Exercise. The Journal of Nutrition, 134(6), 15835-15875. Retrieved from http://jn.nutrition.org/content/134/6/1583S.full
  16. National Center for Biotechnology Information. (n.d.). I-isoleucine. Retrieved September 2, 2016 from – View Reference
  17. National Center for Biotechnology Information. (n.d.). L-valine. Retrieved September 2, 2016 from https://pubchem.ncbi.nlm.nih.gov/compound/6287#section=Top
  18. National Center for Biotechnology Information. (n.d.). L-tyrosine. Retrieved September 2, 2016 from https://pubchem.ncbi.nlm.nih.gov/compound/6057#section=Top
  19. University of Maryland Medical Center. (2013, July 16). Tyrosine. Retrieved September 2, 2016 from – View Reference
  20. Human Performance Resource Center. (2014, May 19). What’s the difference between caffeine and caffeine anhydrous? Retrieved September 2, 2016 from – View Reference
  21. Examine.com. (n.d.). Huperzine-A. Retrieved September 2, 2016 from – View Reference
  22. Hobson, R. M., Saunders, B., Ball, G., Harris, R. C. & Sale, C. (2012). Effects of β-alanine supplementation on exercise performance: a meta- analysis. Amino Acids, 43(1), 25-37.
  23. Zoeller, R. F., Stout, J. R., O’Kroy, J. A., Torok, D. J., & Mielke, M. (2007). Effects of 28 days of beta-alanine and creatine monohydrate supplementation on aerobic power, ventilatory and lactate thresholds, and time to exhaustion. Amino Acids, 33(3), 505-510. doi:10.1007/s00726-006-0399-6
  24. Bioperine.com. (n.d.). Research. Retrieved September 2, 2016 from http://www.bioperine.com/index.php/researchhighlight
  25. Office of Environmental Health Hazard Assessment. (2016, August 5). Safe Drinking Water and Toxic Enforcement Act of 1986. Retrieved September 1, 2016 from http://oehha.ca.gov/media/downloads/proposition-65//p65single080516.pdf
  26. American Cancer Society. (2015, July 14). Cancer Warning Labels Based on California’s Proposition 65. Retrieved September 1, 2016 http://www.cancer.org/cancer/cancercauses/othercarcinogens/athome/cancer-warning-labels-based-on-californias-proposition-65
  27. Obeid, R. (2013). The Metabolic Burden of Methyl Donor Deficiency with Focus on the Betaine Homocysteine Methyltransferase Pathway. Nutrients, 5(9), 3481-3495. doi:10.3390/nu5093481
  28. Drugs.com. (2009). Beetroot. Retrieved September 2, 2016 from https://www.drugs.com/npp/beetroot.html#ref14
  29. Betteridge, D.J. (2000). What is oxidative stress? Metabolism,49(2), 3-8. Retrieved from http://www.ncbi.nlm.nih.gov/pubmed/10693912

2 reviews for JYM Pre Jym Pre Workout

  1. Rated 4 out of 5

    Great product. if you’re new to stimulants though only take a bit to start.

  2. Rated 5 out of 5

    Hands down the best preworkout I’ve used. The flavor is amazing and my results speak for themselves. Other preworkouts got me going but made me feel like my face was going to fall off. PreJym gives me the edge I need without the unwanted side effects.

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