Certain drugs can disrupt the natural balance of microorganisms in the mouth, leading to fungal overgrowth. Antibiotics, for example, are known to kill beneficial bacteria, thereby allowing fungi like Candida to thrive. Similarly, inhaled corticosteroids used for asthma or other pulmonary conditions can increase the risk of oral thrush if proper oral hygiene is not maintained. Patients are often advised to rinse their mouths after using such medications to prevent fungal overgrowth.
