Budecort inhaler includes the active component budesonide, a corticosteroid that is primarily used to treat asthma and chronic obstructive pulmonary disease. It works by lowering inflammation in the airways, which makes breathing easier and helps to prevent asthma attacks. Budecort is often used as a maintenance medication and is not designed to provide quick relief from acute symptoms. To maintain best control of their illness, patients should use the inhaler as prescribed on a regular basis, even if they feel OK. Common side effects include throat discomfort, coughing, and oral thrush, so use the inhaler correctly and rinse your mouth afterward. Always consult a healthcare practitioner for individualized guidance and to ensure safe use.