Benefits of L Carnitine for PCOS Landys Chemist Morning or Evening? Best Time to Take L Carnitine LABRADA INDIA L Carnitine injection is recommended at 1 ampule every 2 3 days for best results. The L Carnitine is taken intravenously either by normal injection or using a butterfly needle. After taking this L Carnitine, you PCOS Nutrition Center L Carnitine (120 Capsules) Acetyl L Carnitine (ALCAR) Supplement for Horses Mad Barn