I was prescribed cefdinir for an ear infection one week ago. i took four doses before i realized that it was causing my horrible stomach ache. i was prescribed doxycycline and have taken four doses. i am still having pain and fullness?

Unfortunately, most of the antibiotics used for treating ear infections can cause GI upset, like Cefdinir, Augmentin, and Doxycycline. Try taking it with food and/or probiotics. Avoid consuming anything containing Calcium within 1 hr of each dose as it will bind the antibiotic, thereby deactivating it. OTC Famotidine or Esomepraprole may help with the discomfort.