Can gentian violet solution be applied to oral ulcers?

Generally, gentian violet solution can be applied to treat oral ulcers and, if needed, should be used under the guidance of a physician. The specific explanation is as follows:

Gentian violet solution is a topical disinfectant with antibacterial and antimicrobial properties. Its main component, gentian violet, can inhibit and kill specific microorganisms, such as cutaneous Gram-positive bacteria and Candida albicans. The development of oral ulcers is sometimes associated with infections by these microorganisms, especially Candida albicans-induced oral inflammation. Therefore, in cases where oral ulcers are caused by such microbial infections, gentian violet solution can help control the condition, alleviate ulcer symptoms, and promote healing of the ulcerated areas through its antibacterial effects.

Oral ulcers can have various causes; in addition to microbial infections, they may also result from factors such as reduced immunity, vitamin deficiencies, and hormonal changes. For ulcers not caused by microbial infections, the direct therapeutic effect of gentian violet solution may be limited. However, its astringent and antibacterial properties can still help create a more favorable oral environment for ulcer healing. Usage of gentian violet solution should follow medical advice to avoid excessive or prolonged application, which may cause unnecessary irritation to the oral mucosa.

Gentian violet solution is for external use only and should be applied solely to the affected area, avoiding ingestion of the solution.