Singulair
"Well, it did the job pretty efficiently,  so it gets an extra star for that.  However, I was left with and the next day a rash and swelling that started closing off my airways. It took 5 days to realize that it was a side effect of the drug. I stopped taking it and popped one benedeyl and the next day my throat was half it's precious size nd my face burned much less. Still recovering. It was so expensive and ended up doing this to me."