Yamamoto Nutrition CaffeineSUSTAINED RELEASE is a caffeine food supplement suitable for adults. Caffeine helps to improve concentration and to increase alertness. The microencapsulated form ensures a long lasting absorption. The microencapsulation of caffeine in a lipid environment allows it to be efficiently transported and absorbed quickly but then released into the bloodstream in a controlled and gradual manner, with the added benefit of not leaving a bad taste in the mouth without using special chemical additives.