Cellucor C4 Ultimate Pre-Workout vs GNC Pro Performance Pre-Workout
The verdict
- GNC Pro Performance Pre-Workout scores 4.0 points higher than Cellucor C4 Ultimate Pre-Workout on formula: 44.0 (F tier) vs 40.0 (F tier).
- Caffeine: 300 mg vs 160 mg.
- Both labels have 0% hidden in blends.
- Neither product has a comparable price per clinically dosed serving.
- Neither is third-party tested.
- Largest panel dose differences for C4 Ultimate Pre-Workout vs GNC Pro Performance Pre-Workout: L-Theanine: none listed vs 200 mg; L-Tyrosine: 1,000 mg vs none listed; Betaine Anhydrous: 1,250 mg vs 2,500 mg.
- Bottom line: GNC Pro 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 · 40.0 | F · 44.0 (best) |
| Overall score | 33.5 | 36.1 (best) |
| Dose | 40.0 | 44.0 (best) |
| Transparency | 100.0 | 100.0 |
| Pump | 60.0 (best) | 45.0 |
| Focus | 90.0 (best) | 60.0 |
| Endurance | 100.0 (best) | 50.0 |
| Caffeine | 300 mg · ☢️ Talk To Your Cardiologist | 160 mg · ⚡ Standard Send |
| Lowest price | $39.99 | $24.99 (best) |
| Per clinically dosed serving | $2.66 · Underdosed | $1.11 · Underdosed |
| Real servings | 15 of 20 | 22.5 of 30 (best) |
| Testing | Untested | Untested |
| Ingredients (per graded serving) | ||
| Caffeine (counts toward the tier) | 300 mg100% ✓ | 160 mg80% |
| L-Citrulline (counts toward the tier) | 3,000 mg75% | 3,000 mg75% |
| Betaine Anhydrous (counts toward the tier) | 1,250 mg50% | 2,500 mg100% ✓ |
| L-Tyrosine (counts toward the tier) | 1,000 mg100% ✓ | missing |
| Taurine (counts toward the tier) | missing | missing |
| L-Theanine (counts toward the tier) | missing | 200 mg100% ✓ |
| Beta-Alanine | 3,200 mg100% ✓ | 1,600 mg50% |
| Sodium (Electrolytes) | 225 mg | 200 mg |
| Creatine Monohydrate | 1,013.1 mg34% | — |
| Huperzine A | 50 mcg100% ✓ | — |
| L-Arginine | 3,000 mg50% | — |
| Lentil Peptides (PeptiPump) | 200 mg | — |
| Methylliberine (Dynamine) | 50 mg | — |
| Potassium | 190 mg | — |
| Rauwolfia vomitoria root bark extract | 1 mg | — |
| Theacrine (TeaCrine) | 10 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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