T.P.
Those medicines (Benedryl, tylenol, motrin) were not taken off the shelf because parents were overdosing, they were CONTAMINATED. However, you should not give any medicine or homeopathic anything (except tylenol) to a small infant without talking to a doctor first. Usually food allergies cause rashes or diarrhea problems. It could be seasonal allergies, but that is also not common at that age. Pink eye might be a concern and needs antibiotics if that is the case. It's also very contagious. A visit to the pediatrician might really help.