Amazon.com: Liquid L Carnitine 3000 Plus Advanced 4 in 1 Formula with Acetyl L Carnitine, L Tartrate, ProGBB & Vitamin B, Stimulant Free High Absorption L Carnitine Supplement for Energy & Metabolism, 16oz : Health & Household Benefits of L Carnitine for PCOS Landys Chemist When to Take L Carnitine for Optimal Training Benefits Transparent Labs 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 N2 L Carnitine 1500 Sport x120 caps