Kalms Night 21 Tablets is a herbal supplement containing valerian, traditionally used to relieve sleeplessness without causing drowsiness the next day. Valerian is used to relieve restlessness and sleep disturbances. It is recommended for adults and the elderly, but not suitable for children or adolescents under 18 years old. As with any medication, it is best to consult a doctor or pharmacist before taking Kalms Night 21 Tablets, especially if you are pregnant or breastfeeding. To use, take one tablet one hour before bedtime.