Well I started taking Omnicef for an infection in my ear canal because I can't take Augmenten ( I can't spell it) anyway I have been taking it for a few days now and the only side effects I have had so far is slight moodiness, muscle weakness, nausa, slight skin irritation (itching) and bouts of crying ( for hours) for no aparent reason. It may not be the best medication in the world - for some people anyway but it beats the hallucinations and anxiety I had with Cipro.