3.Prescription Drugs
Changes in taste and dry mouth (which can lead to that metallic flavor) are side effects of some medications. The most common culprits include antibiotics like tetracycline, the gout medication allopurinol, the psychiatric drug lithium, and some heart meds.
4.Vitamins
Everyday multivitamins with heavy metals like zinc, iron, or copper can leave behind a metallic aftertaste. The same goes for prenatal vitamins, iron and calcium supplements, and cold remedies that have zinc in them. The problem usually goes away once your body processes the medication.
