My doctor prescribed Ceftin (500) mg and benedryl tablets to relieve symptoms of an ear and sinus infection, and swollen glands. Although I have been taking the meds for 3 days now, while I feel better (throat and glands), I have been experiencing lightheadedness, nervousness and continued pressure/fullness in one ear. Is the dizziness associated with a Ceftin side effect? Can these two meds be taken together? Is there something I can do to eliminate the lightheadness while the meds do the work? I have never had any problems taking benedryl.