Ingesting a large dosage of zinc – let’s say 1200 milligrams – could potentially cause quite a bit of discomfort. Some signs might include feeling sick to the stomach, throwing up, having belly pains, and being weak. It would help if your pal drank plenty of water to push this surplus amount of zinc out of their system. Should the symptoms worsen or if they are extremely concerned, then it would be advisable for them to promptly seek medical attention.