查到这个。需要长期使用或overdose 才会有不可逆转的问题吧。短期应该不至于

Signs of too much zinc include nausea, dizziness, headaches, upset stomach, vomiting, and loss of appetite. If you take too much zinc for a long time, you could have problems such as lower immunity, low levels of HDL ("good") cholesterol, and low copper levels