Try Stacker 4 Ephedra Free from Stacker2 to support your body composition goals or weight loss diet. Each capsule provides 250mg of a proprietary blend that includes popular ingredients green tea and yerba mate, as well as 300mg of caffeine to improve your focus and alertness. Try Stacker 4 Ephedra Free from Stacker2 to support your body composition goals or weight loss diet. Each capsule provides 250mg of a proprietary blend that includes popular ingredients green tea and yerba mate, as well as 300mg of caffeine to improve your focus and alertness. Supports the goals of body composition focused athletes. 300mg of caffeine per capsule. Caffeine increases alertness and focus. Proprietary blend of plant based botanicals. 100 capsules per pack Stacker 4 Ephedra Free contains ginseng, caffeine, and green tea extract; all in one capsule! Interested? Click here and read more!