According to a study published in 2005, Colgate Plax, Listerine and Wokadine mouthwashes were all effective in inhibiting the growth of fungi, particularly Candida albicans, notes PubMed.gov. Another study published in 2008 tested different types of mouthwashes and concluded that those containing triclosan and fluoride, such as Colgate Plax, were the most effective in controlling oral fungus.
It is best for individuals who have oral thrush or who are at risk of developing oral thrush to avoid using mouthwashes because they alter the normal flora of the mouth, advises Mayo Clinic. These individuals should brush twice a day, floss and use a saltwater mouth rinse. They must also limit the amount of sugar in the diet, control diabetes carefully and rinse the mouth out with water after using a corticosteroid inhaler.
A fungal infection in the mouth is called oral thrush, says Mayo Clinic. The growth of any of a variety of Candida species is the most common cause. Individuals with a suppressed immune system, such as those being treated for cancer or infected with HIV, are at risk of developing thrush. Babies born to women with untreated vaginal yeast infections and people with diabetes are also at risk of developing thrush. Doctors treat thrush with anti-fungal medications.