Ronnie Coleman L Carnitine XS 3,000 mg Liquid Ronnie Coleman Signature Series L Carnitine Therapy Valhalla Vitality Nutricost L Carnitine Tartrate Capsules (240 Caps) 1 Gram per Serving 120 Serv eBay 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 Is it prohibited for athletes to use IV infusions for rehydration and recovery? U.S. Anti Doping Agency