Buy Promethazine with codeine 8oz: Promethazine with codeine 8oz Online Promethazine belongs to a class of medications called phenothiazines, which also includes trifluoperazine and chlorpromazine. The finest online source for promethazine codeine.br What is Promethazine with Codeine?br • Promethazine: An antihistamine that relieves allergy symptoms, reduces nausea, and promotes restful sleep.br • Call Text: +1(510) 738-4834br Email: info@stonersmedstore.comCodeine: A mild opioid that targets the brain’s cough reflex center to suppress persistent coughing.br br Call Text: +1(510) 738-4834br Email: info@stonersmedstore.