Antihistamine and Expectorant (Cough medicine)
Last reviewed April 2026
Who is this for?
This is a combination medicine containing diphenhydramine (an antihistamine that stops coughs and reduces allergic reactions) and ammonium chloride (an expectorant that helps loosen thick mucus so you can cough it out more easily). Together, they relieve cough and clear your chest.
Available Over The Counter
Get this from any pharmacy or chemist — no prescription needed.
Is Diphenhydramine safe to take with another drug?
Check with multiple drugs →Explore this drug