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    Rockstar Energy Drink, 16 Fl Oz (Pack of 4)

    B-vitamins. Taurine. Caffeine. In Each Serving: Taurine 1000 mg, guarana seed extract 100 mg, caffeine 80 mg, glucuronolactone 50 mg, l-carnitine 25 mg, inositol 25. Total Caffeine from All Sources: 160 mg per can. www.rockstarenergy.com.