Thrush may be difficult to prevent completely because the fungus is so common. However, patients who are prone to thrush can lower their risk of infection by using antibiotics only as prescribed by a physician. In addition, patients who wear dentures should keep their dentures clean, remove them at night, and report any mouth irritation or soreness promptly to a dentist.

Pregnant women are urged to consult a physician if they develop white, cheesy vaginal discharge. Patients who are HIV-positive or who are taking drugs that suppress the immune system may also benefit from taking antifungal drugs on a long-term basis. However, experts disagree about this prevention technique because there is evidence that Candida fungi may become resistant to the medications.

In addition, patients who take medications that cause dry mouth may be switched to a similar drug that is less likely to cause this side effect. If this is not possible, or for patients who regularly experience dry mouth symptoms, a physician may suggest they drink more water and use a mouth moisturizer or saliva replacement formula.

Various measures can also be undertaken to help prevent thrush in infants. Soaking bottle nipples and pacifiers daily in hot tap water that is at least 130 degrees Fahrenheit (54.4 degrees Celsius) is one method.

Other tips for reducing the risk of thrush include:

• Visit the dentist regularly – at least twice a year. Brush and floss regularly and keep dentures clean. Regularly brushing the tongue is important, as well.
  
  
• Consume unflavored yogurt or acidophilus capsules when taking antibiotics.
  
  
• Try to quit smoking.
  
  
• Limit the amount of sugar and yeast-containing foods that are consumed. These include bread, beer and wine.
  
  
• Breastfeed babies to help build their natural defense systems. Mothers with fungal infections are also urged to use nursing pads, which can prevent the fungus from spreading to the clothes. These pads should not have a plastic barrier.
  
  
• Avoid mouthwashes or sprays. These can destroy the normal flora in a person’s mouth.