Gat Nitraflex High-Intensity Formula Pre-Workout 30 Servings- Fruit Punch. NITRAFLEX® HIGH-INTENSITY TRAINING FORMULA. It contains proven muscle building L-Citrulline malate, L-Arginine, L-Arginine Alpha-ketoglutarate (AKG) amino acids, and Calcium fructoborate (CFB), a natural, high potency form of Boron which has been shown to support free testosterone.
