Pulmicort is most frequently seen in a nasal inhaler form used for the treatment of asthma and other respiratory illnesses. With regular usage, it decreases the frequency and severity of asthma attacks. The drug works as a corticosteroid to prevent inflammation and swelling of the lungs. This action reduces the severity of an attack. It is often combined with other asthma medicines for inhaled use. Pulmicort is only available through a doctor's prescription. It can be found in many different dosage forms, including: suspension, powder, solution,aerosol powder and aerosol liquid. As an inflammation reducer, Pulmicort has also been found effective for treating Crohn's disease and ulcerative colitis.