Dimetapp Cough & Cold helps relieve cough & cold symptoms. Dimetapp Cough & Cold helps relieve cough & cold symptoms with a great tasting grape flavour and is sugar free. Helps relieve dry irritating cough, nasal and sinus congestion, blocked/runny nose, itchy, watery eyes, sneezing Helps relieve: Dry cough, nasal congestion, runny nose, itchy or water eyes and sneezing