Hi Tech Pharmaceuticals Amp3d Extreme Pre-Workout features AMP3D™, a proprietary Citrulline Silicate (Nitro Rx®) compound designed to maximize nitric oxide production. This advanced formula ensures a high concentration of L-arginine remains available in the muscles, promoting superior vasodilation and enhanced blood flow. The result is improved nutrient delivery and muscle performance, supporting intense workouts and faster recovery. AMP3D™ technology sets a new standard in nitric oxide boosters for serious athletes seeking peak performance.