Low calorie per 8 fl oz (240 ml). Own it for 99 cents. 50 calories per can. Consumer Comments? 1-866-228-3666. When you want the energy to succeed where only the leanest and meanest survive, you need the penetrating Venom of Mojave Rattler. Take on the world with the ultimate payload of taurine, guarana, l-carnitine, ginseng and B vitamins packed in Mojave Rattler. Take on the world and own it! Please recycle. 160 mg caffeine per 16 fl oz serving. Energy blend per 16 fl oz: 4943 mg. Caffeine, taurine, guarana extract, L-carnitine, ginseng extract, inositol, maltodextrin.