YOU NEED TO FIND. The cause first.
Brush. A metallic taste in your mouth is a condition called dysgeusia. It is not life threatening, but can be inconvenient. Dysgeusia can be caused by upper respiratory tract infections, hormonal changes, some medications (such as Capoten or flagyl), tobacco smoke or nasal polyps. Proper mouth cleaning and an increase in zinc intake can cure dysgeusia. Read more: how to cure a metallic taste in mouth |.
Metallic taste. Remove the cause. For example treat gum infection or adjust medications.