Brad
Ok I have tried over the counter stuff and they r temporary relievers but what I found that works is to take a needle and scratch the blisters and then dab bleach on the poison ivy. (dab do not rub) Then after the bleach dries put some over the counter stuff on it like ivarest or ivy dry or caladryl. That stuff will act as a thin almost skin-like barrier and help the bleach dry out the blisters. It takes about 12 hrs before you start to see results and continue 2 times daily and it should be gone in about 2 to 3 days.
Yes I do the same thing. Bleach kills it and stops the spreading.