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Is it possible to have an "overdose" of zinc supplements, and if so, what are the symptoms?

Yes, it is possible to overdose on zinc supplements. Symptoms of a zinc overdose may include nausea, vomiting, a bad taste in the mouth, stomach and intestinal irritation, abdominal cramps, and diarrhea. It is not recommended to exceed a daily dose of 40 mg of zinc. If you suspect you are experiencing symptoms related to zinc supplementation, it is best to stop taking the supplement. If symptoms persist, it is advised to consult a doctor for further evaluation.