L Carnitine: Benefits, Side Effects, Sources, and Dosage iMuscles Nutrition Injectable l carnitine has 100% bioavailability and it's 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 L Carnitine ko steroid bana diya? Top fat loss supplement? L Carnitine still ranks up there. Injectable zyada bioavailable hota hai, but bhai har koi sui nahi laga sakta. Normal gym goers ke Injectable L Carnitine > Oral L Carnitine BUT do you REALLY need it?, , I dont think so., , L Carnitine is a medicine often prescribed by doctors to patients with heart issues., , In theory, it