JYM Supplement Science, High-Performance Pre-Workout, Tangerine, 17.9 oz (508 g)


JYM Supplement Science

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  • Endurance | Mind | Muscle Growth | Strength
  • 6 g‡ BCAAs
  • 6 g ‡ Citruline Malate
  • 2 g‡ Creatine HCL
  • 2 g ‡ Beta-Alanine 
  • 1.5 g‡ Betaine
  • Natural Flavor
  • Dietary Supplement 
  • CarnoSyn - Carnosine Synthesizer
  • Con-Cret Reinforced
  • NO3T Nitrate Technology 
  • BioPerine® 
  • AlphaSize® 
My Guarantee

I've taken the decades I've spent in school, the lab, the gym, and the kitchen and distilled them into the very product you hold in your hands. I formulated every JYM Supplement Science product to include the same ingredients at the exact amount I use to reap maximum performance and physique benefits. It's my hope that you, too, will experience similar results.

Jim Stoppani, PhD

Owner - JYM Supplement Service

‡Per serving

Suggested Use

As a dietary supplement, mix 1 scoop of PreJYM™ 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.

Other Ingredients

Dextrose, sodium citrate, natural flavor, sucralose, acesulfame potassium, citric acid, beta-carotene [color].

Allergen warning: Produced on shared equipment that also produces products that may contain egg, milk, soy, tree nuts, and wheat.

This product was produced in a GMP-compliant facility.


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 300 mg 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.

Keep out of reach of children.

Store at 15-30ºC (59-86ºF). Protect from heat, light and moisture. Do not purchase if seal is broken.

Warning: Consuming this product can expose you to chemicals including lead, which is known to the state of California to cause cancer and birth defects or other reproductive harm. Prop 65.

This product is not intended to diagnose, treat, cure or prevent any disease.

TGA: We make no 'therapeutic claims' with regard to any product.

We try to ensure the accuracy of product images and information, some manufacturing changes to packaging and/or ingredients may be pending update on our site. Although items may occasionally ship with alternate packaging, freshness is always guaranteed. We recommend that you read labels, warnings and directions of all products before use and not rely solely on the information provided.

Supplement Facts
Serving Size: 1 Scoop (25 g)
Serving Per Container: About 20
  Amount Per Serving %Daily Value
Calories  80
100 mg  4%
Total Carbohydrate
2 g  1%**
Total Sugars
Includes 1 g Added Sugars
1 g

49 mg 4%
36 mg  1%
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) Root Extract
500 mg 
3 g 
1.5 g 
1.5 g 
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.