🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 26% of ingredients have research evidence
B Label Compliance Grade

Product Label

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Label Data

26 Gram(s) Serving Size
20 Servings
Other Combinations Product Type
26% Evidence Coverage

Supplement Facts — Evidence Check

Calories
80 Calorie(s)
Total Carbohydrates
3 Gram(s) (1% DV)
Calcium
20 mg (2% DV)
Sodium
5 mg (1% DV)
📊 Market median: 5.0mg (298 products) 📚 701 studies (Tier A: 5, B: 123)
This product: 2mg
CarnoSyn
2 Gram(s)
1.5 Gram(s)
📊 Market median: 496.0mg (192 products) 📚 20 studies — no high-quality reviews
This product: 1.5mg
1 Gram(s)
📊 Market median: 500.0mg (180 products) 📚 5 studies (Tier A: 0, B: 1)
This product: 1mg
N-Acetyl L-Cysteine
600 mg
✅ Within RDA (0.3× RDA of 550 mg) 📚 36 studies (Tier A: 1, B: 7)
RDA 550mg This product: 150mg UL 3500mg
6 Gram(s)
📊 Market median: 2000.0mg (275 products)
Median 2000.0mg This product: 6mg
Beet (Beta vulgaris L.) root extract
500 mg
3 Gram(s)
📊 Market median: 17.4mg (161 products)
Median 17.4mg This product: 3mg
1.5 Gram(s)
📊 Market median: 17.4mg (161 products)
Median 17.4mg This product: 1.5mg
L-Valine
1.5 Gram(s)
1.5 Gram(s)
📊 Market median: 500.0mg (223 products) 📚 22 studies (Tier A: 0, B: 1)
This product: 1.5mg
📊 Market median: 180.0mg (239 products) 📚 43 studies (Tier A: 1, B: 19)
This product: 300mg UL 400mg
📊 Market median: 0.15mg (41 products)
Median 0.15mg This product: 0.05mg
Black Pepper extract
5 mg

Other Ingredients

Dextrose Natural Flavors Natural Sweetener Blend Turmeric powder Calcium Silicate

Label Claims — Verification

All Other
Structure/Function
All Other (99% of products) Structure/Function (85% of products) Nutrient (54% of products) Approved Health (3% of products)

Target Groups

Adult (18 - 50 Years)

Product Information

📋 Directions for Use

Directions: As a dietary supplement, mix 1 scoop of Pre JYM in 12-32 oz. 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.

⚠️ Warnings & Precautions

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

Warnings: Check with a qualified healthcare professional before taking this or any other dietary supplement. Do not use if you are sensitive to caffeine, pregnant or nursing, under 18 years of age, have any known or suspected medical condition, and/or if you are taking any prescription or OTC medications, as Pre JYM may enhance the absorption rate of some medications.

Warnings: Check with a qualified healthcare professional before taking this or any other dietary supplement. Do not use if you are sensitive to caffeine, pregnant or nursing, under 18 years of age, have any known or suspected medical condition, and/or if you are taking any prescription or OTC medications, as Pre JYM may enhance the absorption rate of some medications.

Avoid using with any other caffeinated product. Too much caffeine may cause nervousness, irritability, sleeplessness, and, occasionally, rapid heartbeat. Always begin use with 1/2 scoop or less to assess your tolerance. Once tolerance is assessed, take maximum amount of 1 scoop. To avoid sleeplessness, do not consume within 6 hours of bedtime.

Keep out of reach of children.

Do not purchase if seal is broken.

🧪 Formulation Notes

6g BCAAs | 6g Citrulline malate | 2g Creatine HCL | 2g Beta-alanine | 1.5g Betaine

Pre JYM is an incredibly strong pre-workout matrix that contains 300 mg of caffeine per serving, the equivalent of approximately 3 cups of coffee.

Additional Information

My Guarantee Inside this bottle is decades of supplement research - from the lab and the gym. As a scientist, I have spent years researching ingredients that will produce results. As a gym rat, I have spent years benefiting from that research. Now it's your turn. Every ingredient in this formula is in an amount used in clinical studies and my own gym to produce significant gains in size, strength and endurance. I know it works because this is what i take before every one of my workouts. Let it work for you. Hit the JYM!

Jim Stoppani, PhD Owner - JYM Supplement Science For questions regarding JYM products go to: Twitter Instagram @JimStoppani or Facebook @DrJimStoppani or JYMSupplementScience.com

Get one month of free access to hundreds of Jim's workouts visit Jimstoppani.com/JYM-trial For more info on the JYM Supplement Science Lexicon and how it can help you optimize your results, go to JYMSupplementScience.com.

This product was produced in a GMP-compliant facility. Good manufacturing practices, or GMPs, are a set of standards which ensure the purity and proper labeling of dietary supplements.

Muscle growth | Strength | Energy | Endurance | Mind

Natural flavors 20 servings | Pre-workout | Per serving

Informed-Sport.com Trusted by sport

Informed-Choice.org Trusted by sport

Store at 15-30(0)C (59-86(0)F). Protect form heat, light and moisture.

Prop 65 Warning: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

PRE20NIP 20157 120116 V4

Product Details

UPC / SKU 8 17047 02015 7
DSLD Entry Date 2017-05-24
Product Type Other Combinations
Form Powder
DSLD ID 74216
Data Updated 2026-04-11

Research Evidence

849 Research Sources
56 Avg Quality Score
450 Meta Analysis
152 Rct
137 Systematic Review
73 Clinical Trial
11 Regulatory Source
7 Other
7 Guideline
3 Openfda Safety
2 Cochrane Review
2 Observational
A Phosphate binders for preventing and treating chronic kidney disease-mineral and bone disorder (CKD-MBD)
Meta Analysis The Cochrane database of systematic reviews 2018
A Calcium supplementation (other than for preventing or treating hypertension) for improving pregnancy and infant outcomes
Meta Analysis The Cochrane database of systematic reviews 2024
A Calcium supplementation (other than for preventing or treating hypertension) for improving pregnancy and infant outcomes
Meta Analysis The Cochrane database of systematic reviews 2015
A Vitamin and mineral supplementation for maintaining cognitive function in cognitively healthy people in mid and late life
Meta Analysis The Cochrane database of systematic reviews 2018
A Calcium supplementation during pregnancy for preventing hypertensive disorders and related problems
Meta Analysis The Cochrane database of systematic reviews 2025
A Dietary calcium supplementation for preventing colorectal cancer and adenomatous polyps
Systematic Review The Cochrane database of systematic reviews 2008
A Calcium and vitamin D for increasing bone mineral density in premenopausal women
Systematic Review The Cochrane database of systematic reviews 2023
A Dietary sodium, sodium-to-potassium ratio, and risk of stroke: A systematic review and nonlinear dose-response meta-analysis
Meta Analysis Clinical nutrition (Edinburgh, Scotland) 2019
A The association between circulating magnesium and clinically relevant outcomes in patients with chronic kidney disease: A systematic review and meta-analysis
Meta Analysis Clinical nutrition (Edinburgh, Scotland) 2021
A Calcium channel blockers versus other classes of drugs for hypertension
Systematic Review The Cochrane database of systematic reviews 2021
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