What causes this metal taste in your mouth for a couple weeks?

A persistent metallic taste in the mouth can be caused by various factors, including medication side effects, poor oral hygiene, or dental issues like gum disease. Certain medical conditions, such as sinus infections, Diabetes, or liver problems, may also contribute. Additionally, dietary changes or exposure to heavy metals can lead to this sensation. If the taste persists, it's advisable to consult a healthcare professional for a proper evaluation.