Stacker2 Extreme Energy Shots are the newest addition to the Stacker 2 line of delicious and effective energy products. They are the perf convenient energy boost for people on the go. The Stacker2 line of diet and energy s are manufactured by NVE Pharmaceuticals pioneers in d energy and sports nutrition s for over 35 years. Stacker2 Extreme Energy Shots are superior to most energy shots because they do not contain sugar or calories but do taste great. When you're looking for energy for w school or p there is only one choice-Stacker2 Extreme Energy Shots manufactured by NVE Pharmaceuticals. Extreme Energy Shots have 0 Ca 0 calories and 0 sugars. Stacker2 Extreme Energy Shots are available in 2 delicious flavors: Be and extra strength Grape. Try one today. Buy from a name you can trust Stacker2. Proudly Made in the USA.