My grandmother told me a long time ago, that when she was about 12 and my great uncle was about 10 that her father made them drink suntea made with different kinds of poisonous plants and sasafrass (sp...) she said after that she never got poison ivy or anything like that again. And she lived her whole life on the same dirt road in Bush, KY and walked the woods barefoot looking for john swifts lost siver mines and ginseng rootsup into her early 70's, wouldI drink it? no, but if you have a bad reaction to poison ivy, a few cups of poison tea might be worth 60 years of immunity