Injectable vs Oral L Carnitine: Which Works Better? AWP L Carnitine Linus Pauling Institute Oregon State University 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 L Carnitine Injection Products list Products Ceva Australia Injectable l carnitine has 100% bioavailability and its a supplement, not steroid., Even as a natty you can use and it can also help you in your bulking process, not just in fat loss. , ., Baaki if LEVOCARNITINE INJECTION, USP1 g per 5 mL vial and 4 g per 20 mL vialFOR INTRAVENOUS USE ONLYRx Only