Has anyone tried the combination of Cefdinir and Plaquenil. I had some success initially, but feel I need still need something for my sinuses. Also, what is the word on Flagyl, one LLMD told me it was carcinogenic but seems to be widely used. Should I ask for another antibiotic at this point? I was also wondering about short courses of prednisone to clear sinuses and let the antibiotics work better. Also what do you recommend for intense stiff neck pain, watery eyes?