GAT Sport Nitraflex vs GNC Pro Performance Pre-Workout

The verdict

GNC Pro Performance Pre-Workout scores 31.3 points higher than GAT Sport Nitraflex on formula: 44.0 (F tier) vs 12.7 (F tier).
Caffeine: 325 mg vs 160 mg.
Hidden-blend share is 57.5% for Nitraflex and 0% for GNC Pro Performance Pre-Workout.
Neither product has a comparable price per clinically dosed serving.
Neither is third-party tested.
Largest panel dose differences for Nitraflex vs GNC Pro Performance Pre-Workout: Betaine Anhydrous: none listed vs 2,500 mg; L-Theanine: 0 mg vs 200 mg; L-Citrulline: 0 mg vs 3,000 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.

Head-to-head: GAT Sport Nitraflex vs GNC Pro Performance Pre-Workout
Metric	GAT Sport Nitraflex F 🧚 Fairy Dust	GNC Pro Performance Pre-Workout F 🧚 Fairy Dust
Scores
Tier	F · 12.7	F · 44.0 (best)
Overall score	15.8	36.1 (best)
Dose	30.0	44.0 (best)
Transparency	42.5	100.0 (best)
Pump	33.3	45.0 (best)
Focus	0.0	60.0 (best)
Endurance	46.9	50.0 (best)
Caffeine	325 mg · 🚀 Heart Go Brrr	160 mg · ⚡ Standard Send
Lowest price	$29.99	$24.99 (best)
Per clinically dosed serving	$1.23 · Underdosed	$1.11 · Underdosed
Real servings	24.4 of 30 (best)	22.5 of 30
Testing	Untested	Untested
Ingredients (per graded serving)
Caffeine (counts toward the tier)	325 mg100% ✓	160 mg80%
L-Citrulline (counts toward the tier)	hidden in blend0%	3,000 mg75%
Betaine Anhydrous (counts toward the tier)	missing	2,500 mg100% ✓
L-Tyrosine (counts toward the tier)	hidden in blend0%	missing
Taurine (counts toward the tier)	missing	missing
L-Theanine (counts toward the tier)	hidden in blend0%	200 mg100% ✓
Beta-Alanine	1,500 mg47%	1,600 mg50%
Sodium (Electrolytes)	82 mg	200 mg
Nitrosigine (Inositol-Stabilized Arginine Silicate)	1,000 mg67%	—

= best in the row. = part of the ideal pre and counts toward the tier. Percentages are of the clinical reference dose.