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L-Citrulline & L-Arginine – This pairing of scientifically studied amino acids can contribute to significantly improved nitric oxide synthesis. L-arginine is naturally converted into nitric oxide via enzymatic reactions in the human body. L-citrulline acts as a precursor to L-arginine. When ingested orally, it can elevate internal L-arginine levels. An animal study published in Biochemical and Biophysical Research Communications reported that combined L-citrulline and L-arginine can greatly enhance nitric oxide levels and blood flow parameters, far more than either could alone. “I started using Nutravia Gummies a few months ago. I’ve noticed I’ve been able to maintain my erections and enjoy longer-lasting sex. These gummies have helped me immensely.” Erectin Gummies incorporates seven top-notch ingredients, several of which are established nitric oxide boosters. Increased nitric oxide levels should improve blood flow to your reproductive organs. A clinical review stated that nitric oxide “has a well-defined function in initiating and maintaining an erection.”