Nausea/Vomiting
"Took this medication for the first time for nausea caused by a severe ear infection.  Thirty minutes after the first dose my eyes were itchy quickly followed by my scalp and the rest of my body. I looked in the mirror I was very bright red and swelling quickly. Took the maximum recommended dose of benadryl but to no avail. One hour later in the urgent care for steriods and more benadryl until they could get it under control. Very scary medicine."