Answer by  
                                                                                          mansi (521)
                                                            
                          
                          
                                                          A metallic taste can be due to:
Medications such as some antibiotics, prenatal vitamins and antidepressants, as well as drugs used to treat high blood pressure, rheumatoid arthritis and kidney stones 
Oral problems, including oral infections such as gingivitis or periodontitis, tooth infections, and poor oral hygiene.