Budesonide (Pulmicort) is a glucocorticoid steroid for the treatment of asthma, non-infectious rhinitis (including hay fever and other allergies), and for treatment and prevention of nasal polyposis.
Salmeterol (Serevent) is used for long-term treatment of asthma. It may be used to prevent breathing problems in certain patients, including patients with night-time asthma, or breathing problems caused by exercise.
Montelukast (Singulair) is used for prevention and long-term treatment of asthma. It is also used to relieve allergy symptoms. It may also be used for other conditions as determined by your doctor.