240 calories per bottle. Consumer Comments? 1-866-228-3666. When you want to stay razor sharp and are ready to take on the world, you need the Venom of Black Mamba. Venom packs a powerful payload of strong, fierce energy - Taurine, Guarana, L-carnitine, ginseng and B vitamins. 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.