I'm glad my friend sent this link to me. My son was diagnosed with asthma almost two years ago. He was put on Singular and albuterol inhalers. He stayed with that for about a year. We didn't at the time have any health coverage and could no longer afford the Singular. We started giving him Zyrtec about three months ago. My son, he's 7, started going into these rages about this time last year and we had no clue as to why. We chalked it up to his age and being a boy. The raging has now stopped but he's still combative and lashes out easily physically. He's never been one to act violently before he was diagnosed with asthma. I'm now wondering if this is due to the medicine. After reading these posts we'll be taking him off the Zyrtec and trying something new.
I'm not sure if your son's behavior is because the singular or Zyrtec. Howerver, when I read the Singular side effect on this site, many kids have similar behavior as your kid.
This registry is a place to share positive or negative side effects of using Zyrtec. If you directly experienced a side effect while using Zyrtec, then we encourage you to enter it here. Please note that entries here are the experiences of individual users, and in no way means that you or anyone else will experience the same side effect, since the same medication affects people in different ways. Please always contact your physician.
-- Read the entire disclaimer