Day + Night Nurse Capsules have been specially formulated to provide 24 hour relief from the major symptoms of colds & flu. Each pack contains a combination of day time (yellow/orange) capsules & night time (green/white) capsules. Day time capsules quickly provide relief from the major symptoms of colds & flu without causing drowsiness. Night time capsules also relieve colds & flu symptoms & help you get a good nights sleep to wake feeling better.