Drug interactions for the following drug(s)

Interactions between your selected drugs

The therapeutic efficacy of Methylphenidate can be decreased when used in combination with Promethazine.

No other interactions were found between your selected drugs.

Note: this does not necessarily mean no interactions exist. Always consult with your doctor or pharmacist.

Interactions between your selected drugs

Drug1 (rxcui = 1091172, name = 24 HR methylphenidate hydrochloride 27 MG Extended Release Oral Tablet [Concerta], tty = SBD). Drug2 (rxcui = 992457, name = promethazine hydrochloride 25 MG Rectal Suppository [Phenergan], tty = SBD). Drug1 is resolved to methylphenidate, Drug2 is resolved to promethazine and interaction asserted in DrugBank between Methylphenidate and Promethazine.

No other interactions were found between your selected drugs.

Note: this does not necessarily mean no interactions exist. Always consult with your doctor or pharmacist.