Kalms Night One-A-Night Tablets Kalms Night One-A-Night Tablets provide temporary relief from sleep disturbances so you can get a refreshing night's sleep without feeling drowsy the next morning. Kalms Night One-A-Night Tablets contain valerian, traditionally used for its sedative action which may be of great benefit for those with sleep disorders. Kalms Night One-A-Night Tablets are suitable for adults over the aged of 18 & are a traditional herbal medicinal medicine, based on traditional use only.