One way to treat oral thrush is with an antifungal mouthwash. These mouthwashes contain active ingredients that can help to kill the Candida albicans fungus and prevent it from spreading.
Daily use of an antiseptic mouthwash may help prevent thrush, however. What are the symptoms of oral thrush? The main symptom of oral thrush is white, slightly raised lesions (sores) inside the mouth.