Prime Energy and the company’s other drink, Prime Hydration, have similar ingredients, but only Prime Energy contains caffeine: 200 mg in 12 ounces. That’s more than what’s in a Starbucks ...

but the standout ingredient in Prime Energy drinks is caffeine, with 200 milligrams of caffeine per 12-ounce can. L-theanine, taurine, vitamin B6, and vitamin B12 are also on the list of Prime ...