Do a search on azadirachtin poisoning too and read other things. This link was passed to me in the forum. There are much better and more recent articles.
That's pretty interesting. Mom told me the other day that when I was a kid I had a problem with the DPT shot somehow, and they had to take out/change some part of it so I could get it. I was also born with a seafood allergy, had a reaction at 4. Also says it's rare for people to be born with allergies, that normally they're something you develop as you age.
My only concern in regards to neem oil is...I don't use it, and neither does my friend that comes by to help me on occasion. 9/10 if I was smoking, i smoke my shit or his shit and that's it. I don't buy weed anymore unless it's in a seed form lol.
However...I have had gifts of Cali weed before, so no telling what was on that - because I DID smoke it. Maybe I had a bad reaction to just a little bit of it, who the fuck knows.
Time to go google this poisoning.