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A cough syrup which has been allegedly a drug of choice for various musicians including Justin Bieber and Soulja Boy will no longer be made available due to the negative connotation musicians have established for it.
Promethazine is in a group of drugs called phenothiazines (FEEN-oh-THYE-a-zeens). It works by changing the actions of chemicals in your brain. Promethazine also acts as an antihistamine. It blocks the effects of the naturally occurring chemical histamine in your body.
