CoQ10 and L Carnitine: Benefits, Dosage and Safety Guide Bolt Pharmacy 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 Research Breakdown on L Carnitine Examine L Carnitine helps your body turn fat into fuel improving energy, endurance, and recovery. Combine it with consistent training and a clean diet for real results! , ., ., ., ., #LCarnitine #FatLoss