Fertility Supplements: Best Options for Men and Women (Evidence Based Guide) L carnitine is effective for both fat loss and athletic performance. However, oral L carnitine has lower bioavailability and can be harmful at high doses, so it should be avoided. Even cardiologists give IV Carnicor: Uses, Dosage & Side Effect MIMS L CARNITINE increases muscle mass, reduces fat mass. Bangkok Hospital Headquarter Role of L carnitine in female infertility Reproductive Biology and Endocrinology Springer Nature Link