allergic reactions
"I have severe allergies and believe that Chlor-Trimeton has saved my life several times.  I have had 10-12 life-threatening anaphylactic attacks over the last 20  years.  My attacks usually build slowly, starting with hives, then vomiting and diarrhea, then swelling of my tongue, throat and inner ears.  I have found through trial and error that if I can take a 12-hour Chlor-Trimeton in the first 2-4 minutes after the reaction starts, I can stop the reaction all together, or at least get to the hospital without having to use my Epi-pen.  I LOVE this medicine for hayfever symptoms as well.  Unfortunately, it is getting harder and harder to find the 12 hour tablets."