Cetirizine
"I experienced a continuous outbreak of very itchy, irritating hives for four months at which time I took Benadryl once daily, bathe in cool water and doused myself with calamine lotion to get relief. Just as I was anticipating seeing an allergen Doctor, I asked my best friend's daughter who is a nurse if she could recommend anything other than the Benadryl. She vehemently responded "Zyrtec".  She explained that her 20 year old daughter is an eight years hives sufferer and her only relief is Zyrtec. I begin taking one dose of Zyrtec on a Wednesday, had no breakout on Thursday, Friday or Saturday. In a weeks time I've taken a total of three Zyrtec - no hives. Thank you Zyrtec maker!!!"