Dextrokuf 15 mg Syrup 100 ml It is a medicine which is used to help relieve dry, irritating coughs. The liquid contains dextromethorphan hydrobromide which is an antitussive to help stop persistent coughing. is a cough suppressant. It affects the signals in the brain that trigger the cough reflex. Use it orally disintegrating strips as directed by your doctor.Dextrokuf is the best product for cough and cold.