What is a common side effect of Flagyl?

Flagyl, known generically as metronidazole, is an antibiotic that is widely used to treat various infections, particularly those caused by anaerobic bacteria and certain parasites. A common side effect associated with Flagyl is the development of a metallic taste in the mouth. This side effect is not uncommon and occurs in a significant number of patients taking the medication.

The reason for this metallic taste is not entirely understood, but it has been noted that alterations in the taste perception may result from the drug's interaction with specific receptors in the mouth or central nervous system. Although other side effects, such as nausea, headache, and diarrhea, can also occur, the metallic taste stands out as particularly distinctive and is frequently reported by patients during their treatment.