Heart Healthy Stack L Carnitine vs L Arginine for Erectile Dysfunction L Carnitine is an effective supplement to possibly cut down fat and use it as energy during your workouts. Try it and feel the difference in your routine. #gurumannfitness #missionindiafit #gurumann #supplements # IS L ARGININE SAFE FOR THE HEART? . . . Can improve blood flow Popular for gym pump Risky if you have: Heart disease High BP on medicines