pinworm infection (enterobius vermicularis)
"My son, husband and I all took this and it certainly works! Yuck!  We knew we had them, but we were even blowing them out of our noses, eeeuuu, so gross!  Side effects have been all had a rash, 2 had/have headaches,  2 GI upset with diarrhea, & all 3 spent more time in the bathroom then we want to admit even here.  Is it worth it? YES, yes it is, especially if you consider the thoroughly disgusting alternative."