Is Mulberry sap poisonous?

Question

I know a friend who always chews on a skinned stick from a Mulberry tree and my dad says that some trees are poisonous. Is she gonna die?????

Answer 1

Naw, she will just have an upset stomach and have hallucinations

Answer 2

actually technically it is not poisonous by any means it just is a foreign substance to humans which will just induce mild stomach problems and mild to intense halicuinations