Nitraflex pre-workout delivers fast, explosive training results for a more powerful body, including energy, stamina, Nitric Oxide (NO) and testosterone levels.* 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
