Are you using a corticosteroid? Prednisone and other corticosteroid pills, creams and injections can cause side effects. Find out what to expect. 1 Answer (question resolved) - Posted in: constipation, prednisone - Answer: I am taking 15 mg. of prednisone presently for polymyalgia. Find patient medical information for Prednisolone Oral on WebMD including its uses, side effects and safety, What conditions does Prednisolone treat?.