Depends how healthy you are to begin with. No matter what, it sounds painful.
If you aren’t very healthy, the vomiting/diarrhea would result in dehydration and that could get you.
Then would come kidney stones and kidney failure.
If you make it past that, the increase in circulating calcium would start to block your coronary arteries and lead to a heart attack.
Doesn’t sound like fun. I’ll stick to a few milligrams, thank you.