Hello, I will be starting Tecfidera tomorrow. I am concerned about the vitamins I take interacting...Vitamin D, Calcium, Fish Oil, CoQ10 Probiotoc, Also, Zyrtec, sprintec, oxybutin and naproxen are the scrips I take. I usually take the scrips at night And I could take the vitamins at lunch. I am planning on taking the Tecfidera at 8:00 am and 8:00 pm Thanks,