Made with homeopathic elderberry, single ingredient Boiron Sambucus 200CK pellets provide cough and cold relief, targeting the symptoms of a painful cough, hoarseness, and nasal congestion. Sambucus does not cause drowsiness or interact with other medications or supplements. The melt away pellets conveniently dissolve under the tongue without water for on-the-go relief. Sambucus does not contain artificial colors, flavors, sweeteners, or preservatives.