Medications with blue and yellow dyes

I can’t get the doctor who’s going to perform the surgery on me to get back to me about if my medications (lamictil and Klonopin) that have blue dye and yellow dye will effect the procedure. I have 5 days before the procedure and have to give them 48hrs to cancel or I’m billed. I just bought a bunch of white bread and cheese etc so this is day one of diet change. I’d like to get this over with but find it super unprofessional that he can’t do a quick phone call or message and the nurses are saying they don’t know and to wait for him. I’m in Los Angeles at the top of the line facility so I’m not sure if this is the new normal.