Viper Extreme caps High potency buzz formula - Viper Extreme caps have a unique high potency formula containing; glucuronolactone, Ginkgo-Biloba and caffeine, which some experts believe improves concentration, alertness and reaction times. It also contains L-Tyrosine, a key excitatory brain amino acid. Viper Extreme caps are ideally suited to athletes performing events from short sprints to marathon running, as well as bodybuilders and gym users, looking to stay alert, focused and maximise their training. Viper Extreme is so popular it is even used by those who have to keep alert and focused whilst working late, driving on long journeys or going clubbing. Just take 2-3 Viper Extreme capsules and you'll feel it working within 15-20 minutes. Viper Extreme capsules incorporate the very latest in smart nutrients and neurotransmitter precursors. If you need to focus on training after a hard day at work, you will be very impressed by the effects of Viper Extreme.