Promethazine, originally known as 3,277 R.P., is an N-dimethylaminopropyl derivative of phenothiazine that was developed in France in 1946. Promethazine antagonizes a variety of receptors, allowing it to be used for a number of indications including allergic reactions, pain, sedation, nausea, and vomiting.
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Promethazine tablets and suppositories are indicated to treat rhinitis, allergic conjunctivitis, allergic reactions to blood or plasma, dermographism, anaphylactic reactions, sedation, nausea, vomiting, pain, motion sickness, and allergic skin reactions. Promethazine cough syrup with phenylephrine and codeine is indicated to relieve cough and upper respirato...
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