Dextromethorphan hydrobromidediphenhydramine hydrochloridecalms and controls troublesome coughs and so aids restful sleepdry night time coughsonly for use at night timean oral solution for the night time symptomatic relief of non productive coughs and congestive symptoms associated with coldsactioncovonia night time formula contains dextromethorphan hydrobromide which acts to reduce your desire to cough and diphenhydramine hydroc