Zyrtec
"my bf had hives for 3 weeks.  more often than not.  claritan did really nothing.  Allegra nothing.   benedryl helped some.  I was scared he'd have a anaphylaxis reaction.  I bought him vit.  c, b, d, quercitin, probiotic.  a dao enzyme.  and nothing was working great.  today is Monday 611 pm.  he started zyrtec sat at 11am.  he has red huge hives on his back and legs and arms .  well I'm happy to say...the zyrtec seems to be working..  they are gone.  we've  even eating normal and he's even had a couple of drinks.  also he's taking pepcid.   but it's been over two days of no hives.  I think the zyrtec is a miracle."