Adults 21 years of age and older: If you are taking this medicine to relieve a hangover, dissolve 5 pellets under the tongue 3 times a day until symptoms are relieved, or as directed by a doctor. Adults and children 12 years of age and older: If you are taking this medicine to relieve an upset stomach, nausea, or heartburn, dissolve 5 pellets under the tongue 3 times a day until symptoms are relieved, or as directed by a doctor.