What to do next to zinc overdose?

I think my boyfriend might have zinc overdose, he is nauseous beside bad stomach cramps, and he's really tired. I tried looking online, but i cant really find anything to do about it. can someone help me out?
Answers:
All he can do is stop zinc intake and drink plenty of dampen. He will get better eventually in few days. Other then that .....individual thing you can do is go to hospital and all they will do is present you some sort of flush using IV.

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