GNC Pro Performance Pre-Workout vs JYM Supplement Science Pre JYM High-Performance Pre-Workout
The verdict
- JYM Supplement Science Pre JYM High-Performance Pre-Workout scores 35.0 points higher than GNC Pro Performance Pre-Workout on formula: 79.0 (B tier) vs 44.0 (F tier).
- Caffeine: 160 mg vs 300 mg.
- Both labels have 0% hidden in blends.
- Pre JYM High-Performance Pre-Workout costs $2.22 per clinically dosed serving. GNC Pro Performance Pre-Workout does not have a comparable clinically dosed price.
- Neither is third-party tested.
- Largest panel dose differences for GNC Pro Performance Pre-Workout vs Pre JYM High-Performance Pre-Workout: L-Theanine: 200 mg vs none listed; L-Tyrosine: none listed vs 1,500 mg; Taurine: none listed vs 1,000 mg.
- Bottom line: Pre JYM High-Performance Pre-Workout has the higher formula score.
Straight from the label math; no editorial picks. We don't earn a commission from store links on this site.
| Metric | ||
|---|---|---|
| Scores | ||
| Tier | F · 44.0 | B · 79.0 (best) |
| Overall score | 36.1 | 58.9 (best) |
| Dose | 44.0 | 80.0 (best) |
| Transparency | 100.0 | 100.0 |
| Pump | 45.0 | 60.0 (best) |
| Focus | 60.0 | 87.5 (best) |
| Endurance | 50.0 | 76.6 (best) |
| Caffeine | 160 mg · ⚡ Standard Send | 300 mg · 🚀 Heart Go Brrr |
| Lowest price | $24.99 (best) | $49.99 |
| Per clinically dosed serving | $1.11 · Underdosed | $2.22 · 💸 Pricey (best) |
| Real servings | 22.5 of 30 | 22.6 of 30 (best) |
| Testing | Untested | Untested |
| Ingredients (per graded serving) | ||
| Caffeine (counts toward the tier) | 160 mg80% | 300 mg100% ✓ |
| L-Citrulline (counts toward the tier) | 3,000 mg75% | 4,000.2 mg100% ✓ |
| Betaine Anhydrous (counts toward the tier) | 2,500 mg100% ✓ | 1,500 mg60% |
| L-Tyrosine (counts toward the tier) | missing | 1,500 mg100% ✓ |
| Taurine (counts toward the tier) | missing | 1,000 mg100% ✓ |
| L-Theanine (counts toward the tier) | 200 mg100% ✓ | missing |
| Beta-Alanine | 1,600 mg50% | 2,000 mg63% |
| Alpha-GPC | — | 150 mg50% |
| BioPerine (Black Pepper Extract) | — | 5 mg |
| Creatine Monohydrate | — | 1,780 mg59% |
| Huperzine A | — | 50 mcg100% ✓ |
| L-Isoleucine | — | 1,500 mg |
| L-Leucine | — | 3,000 mg |
| L-Valine | — | 1,500 mg |
| Sodium (Electrolytes) | 200 mg | — |
= best in the row. = part of the ideal pre and counts toward the tier. Percentages are of the clinical reference dose.
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