Question: what is most common side effects of zinc?
Answer: Nausea and Vomiting. Share on Pinterest. ...  Stomach Pain and Diarrhea. Typically, stomach pain and diarrhea occur in conjunction with nausea and vomiting. ...  Flu-Like Symptoms. ...  Low “Good” HDL Cholesterol. ...  Changes in Your Taste. ...  Copper Deficiency. ...  Frequent Infections.