If im your treating doctor I can help you regarding this, if you can use zinc dose of not more than 40mg that should be safe for you once or twice a day is ok. I hope you should be knowing its uses but again breifly I should explain in few words, 1) in acute diarrhoea in children, in acute respiratory diseases, to boost your immunity.
High doses above the recommended amounts might cause fever, coughing, stomach pain, fatigue, and many other problems. Avoid the use dose of tab not more than 100mg unless untill your doctor advice you.