Science-Based NutritionHelps Boost Nitric Oxide (NO) Levels to Support Overall Cardiovascular HealthDietary SupplementVeganNon-GMO/Gluten Free/Soy FreeDoctor's Best Fast Acting Arginine Complex with Nitrosigine uses a patented bonded form of arginine silicate, clinically shown to significantly boost nitric oxide (NO) levels. NO is a key factor in increasing blood flow to working muscles. Engineered to take effect within 15 minutes, it delivers benefits through your entire workout for up to 6 hours - with a single dose! Continued use builds NO levels, which can boost flow and vessel flexibility. Helps support arginine and silicon levelsHelps boost nitric oxide (NO) levels to support overall cardiovascular healthFast acting advanced ingredient that works within 15 minutes, delivering benefits that last up to 6 hours with a single dose

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