I requested information on the possibility of a drug interaction when taking St. John's Wort with Lexapro. The pharmacist said, "St. John's Wort is a dietary supplement and has no pharmacological action." I altered my question to make sure I asked if taking Lexapro with a St. John's Wort supplement can have an adverse reaction and he repeated himself. I found out later from a Doctor that taking both can be very harmful and cause Seratonin Syndrome. Is a pharmacist required to give information of food-drug interactions?