My 7 mth old daughter was given Onicef for her double ear infection. Several days into the medication we noticed her stools being an orange/red color and was worried that there was blood in her stool. My husband and I were not aware of this side effect. She has also started waking up several times during the night crying out and will not go back to sleep. This is very unusual for her since we can put her down at 9:30 and she will sleep until 6:00 the next morning. I am glad to know that we are not the only ones experiencing these problems. I wish we would have know sooner.