Active Ingredients: Proprietary Blend (Yerba Mate Leaf Powder, Green Tea Leaf Extract [With Polyphenols], Guggulsterone Gum Extract, Cassia Nomame Whole Plant Extract, White Willow Bark Extract), Caffeine.

How much caffeine does Stacker 2 have?

Stacker 2 Extreme Energy Shot is an energy supplement made by N.V.E. Pharmaceuticals. Besides the 205 milligrams of caffeine, Stacker Extreme shot also has an energy blend consisting of taurine, amino acids, glucuronolactone, and B vitamins.

What ephedra does to the body?

Ephedra can cause a quickened heartbeat and elevated blood pressure. Side effects include heart palpitations, nausea, and vomiting. More than 800 dangerous reactions have been reported with use of the herb. These include heart attacks, strokes, seizures, and sudden deaths.