Revisiting the Role of Carnitine in Heart Disease Through the Lens of the Gut Microbiota L Carnitine: Benefits, Side Effects, And Dosage, Per Dietitians Effects of l carnitine supplementation on blood pressure: a systematic review and meta analysis of randomized controlled trials Journal of Human Hypertension l carnitine: Nutrition, pathology, and health benefits ScienceDirect l carnitine, a friend or foe for cardiovascular disease? A Mendelian randomization study BMC Medicine Springer Nature Link