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A member asked:
What does promethazine dm do to the body?
A doctor has provided 1 answer
Drugs: Promethazine is an antihistamine and increases the viscosity of your mucus secretions and makes you tired. The DM stands for dextromethorphan which is a synthetic narcotic which acts on the CTZ (central triggering zone) in the brain stem to turn off cough. It reduces coughing but doesn't address the central problem of why you're coughing, the presence of the mucus.
Answered 3/8/2018
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