 Venom Energy contains large doses of taurine, glucuronolactone, and guarana, with L-carnitine, inositol and maltodextrin as additional ingredients.The caffeine content of Venom energy drinks is roughly 162 mg per bottle, or approximately equal to that found in eight ounces of plain Starbucks coffee.Venom was historically bottled in half-liter aluminum bottles (16.9 fluid ounces).