What is Jim Stoppani’s pre-workout?
The product family is Pre JYM from JYM Supplement Science. The original formula, Pre JYM Plus and Pre JYM Stim-Free are distinct options. The Blueberry Pineapple tub pictured here is the original Pre JYM, not Plus or Stim-Free.
Original Pre JYM: verified label amounts
The current Blueberry Pineapple package label lists one 24 g scoop, about 30 servings and:
- Caffeine anhydrous: 300 mg
- Citrulline malate: 6 g
- BCAAs: 6 g total, comprising 3 g leucine, 1.5 g isoleucine and 1.5 g valine
- Creatine HCl: 2 g
- Beta-alanine: 2 g
- Betaine: 1.5 g
- L-tyrosine: 1.5 g; taurine: 1 g
- Beet-root extract: 500 mg
- Alpha-GPC: 150 mg; huperzine A: 50 mcg; BioPerine black-pepper extract: 5 mg
The serving weight is flavor-specific. Do not assume every Pre JYM scoop weighs 24 g. Likewise, creatine HCl is a different listed form from monohydrate, and citrulline malate is not pure citrulline.
How Plus and Stim-Free differ
JYM’s current formula comparison lists:
- Original Pre JYM: 300 mg caffeine, 2 g creatine HCl, 2 g beta-alanine and 1.5 g betaine.
- Pre JYM Plus: 300 mg caffeine, 5 g creatine monohydrate, 3.2 g beta-alanine and 3 g betaine. The comparison also specifies 600 mg nitrates and 100 mcg huperzine A.
- Pre JYM Stim-Free: no caffeine, with 2 g creatine HCl, 2 g beta-alanine and 1.5 g betaine.
Plus therefore does not mean a higher caffeine amount in this comparison. Always confirm the product name and current package before carrying a dose from one version to another.
Directions and stacking
For original Pre JYM, the manufacturer’s directions specify one scoop in 16–24 oz water, 30–45 minutes before exercise. They advise initially assessing tolerance with half a serving or less, no more than one serving, and avoiding use within six hours of bedtime. The pictured label says not to combine it with another caffeinated product.
Adding more pre-workout to increase creatine or beta-alanine also increases caffeine and every other ingredient. A separate supplement is not automatically necessary just because it belongs to the same brand’s range. NIH notes limited evidence that extra BCAAs improve muscle gains beyond an adequate high-quality protein intake.
Bottom line
Start by choosing the exact Pre JYM version. Original Pre JYM has a disclosed 300 mg caffeine dose and creatine HCl; Plus changes several performance-ingredient amounts and the creatine form, while Stim-Free removes caffeine. Those label differences are more useful than assuming a universal “Jim Stoppani stack.”
Product pages and existing offers
These are affiliate links; we may earn a commission from qualifying purchases. Check current labels and checkout terms. Discounts, including any 20% offer or code SHAWTAYYYY7, are subject to eligibility and are not guaranteed.
Sources and review notes
Reviewed October 12, 2026. Original Pre JYM official product. Pre JYM Blueberry Pineapple label. JYM official formula comparison. NIH exercise supplements. This is editorial guidance based on identified labels and sources, not a report of personal product testing. Product versions and offers can change.
