JARROW FORMULAS ARGININE-CITRULLINE SUSTAIN (120 TABLETS)Supports nitric oxide production Suitable for vegetarians and vegans Jarrow Formulas Arginine Citrulline Sustain is a synergistic combination of sustained release arginine and citrulline in equal amounts plus vitamin C to support nitric oxide (NO) production, blood flow and cardiovascular health. L Arginine is required for vascular production of NO and relaxation of blood vessels. Oral L Citrulline is largely converted to L Arginine and supports oral