JYM Supplement Science Pre JYM
The full-spectrum 'kitchen sink' formula. Pre JYM discloses 6g citrulline malate, 6g BCAAs, 2g creatine HCl, 2g beta-alanine, 1.5g betaine, 500mg beet root, and 300mg caffeine—uniquely bundling creatine and dietary nitrate support into one serving at a strong ~$1.67/serving.
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Our Verdict
The most complete 'kitchen sink' formula—uniquely bundles creatine and beet-root nitrates with citrulline, beta-alanine, and betaine at a strong ~$1.67/serving. Beta-alanine is light (2g) and it carries a Prop 65 warning.
Score Breakdown
Pros & Cons
Pros
- •Most complete ingredient breadth
- •Includes creatine and beet-root nitrates
- •Fully disclosed label
- •Excellent value (~$1.67/serving)
- •Legacy formula with long track record
Cons
- •Beta-alanine only 2g (below stronger research range)
- •California Prop 65 lead warning on label
- •No public sport certification or finished-product COA found
- •Large scoop
Specifications
| Caffeine | 300mg |
| Citrulline Malate | 6g |
| BCAAs | 6g |
| Creatine HCl | 2g |
| Beta-Alanine | 2g |
| Betaine | 1.5g |
| Beet Root | 500mg |
| Servings | 30 |
Who Is This For?
Best For
- Those wanting creatine + nitrates in the pre
- Value seekers
- Full-spectrum formula fans
Not For
- Those wanting a high beta-alanine dose
- Buyers wanting sport certification
- Prop 65-sensitive shoppers
Where to Buy
Appears In
Customer Reviews
Alternatives to Consider
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The transparency benchmark. BULK Black pairs one of the most fully disclosed high-stim labels in the category with strong clinical doses—8g citrulline malate, 4g beta-alanine, 2.5g betaine, and 325mg caffeine—backed by public third-party purity reports.
Kaged Pre-Workout Elite
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The aggressively dosed all-in-one. Pre-Workout Elite packs 10g L-citrulline, 5g creatine, 3.2g beta-alanine, 2.5g betaine, and 388mg caffeine in a single serving—and every batch is Informed Sport tested for banned substances and heavy metals.
Legion Pulse Pre-Workout
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The best-balanced, evidence-led pick. Pulse centers on 8g citrulline malate, 3.6g beta-alanine, 2.5g betaine, and 350mg caffeine with a 1:1 caffeine-to-theanine focus ratio—plus Labdoor certification, published COAs, and NSF-certified cGMP manufacturing.
PEScience Prolific Pre-Workout
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The cleanest tingle-free pick. At its full 2-scoop serving, Prolific delivers 6g citrulline, 2.5g betaine, 320mg caffeine, 200mg theanine, and 250mg citicoline with no beta-alanine—a coherent energy/focus/pump formula backed by published finished-product COAs.