Caffeine increases endurance capacity, helps improve concentration and alertness. PurCaf caffeine has been developed from green coffee, having 95% caffeine. It is a 100% organic caffeine, highly soluble in water and with a neutral taste. Caffeine helps reduce perceived effort during endurance activities Recommended daily dose: 1 capsule Directions for use: Take 1 capsule with 200 ml of water 30-45 minutes before physical activity.