What is a common side effect of chlorhexidine gluconate mouthwash?

Chlorhexidine gluconate mouthwash is widely used in dental practice for its antimicrobial properties to control plaque and gingivitis. However, one of the notable side effects associated with its use is tooth staining and altered taste sensation.

The staining occurs due to chlorhexidine's ability to bind to dental plaque and hard oral tissues, leading to yellowish-brown discoloration of teeth and tongue over time. This can be particularly noticeable in individuals who use the mouthwash frequently or for extended periods.

Altered taste sensation is another side effect, where users may report a temporary change in how they perceive flavors, often described as a metallic taste. This is related to the way chlorhexidine interacts with the oral mucosa and the taste buds.

Understanding these side effects is important for both patients and dental hygienists, as they help in managing patient expectations and ensuring that oral hygiene practices remain effective while minimizing any adverse effects.