Budesonide, which was patented in 1973, is a medication of the corticosteroid type, and is used to help prevent the symptoms of asthma. When used regularly every day, inhaled Budesonide decreases the number and severity of asthma attacks. However, it will not relieve an asthma attack that has already started. It is worth noting that Budesonide works by preventing inflammation in the lungs, therefore making the asthma attack less severe. As for the inhaled form of this drug, it may be used with other asthma medicines such as bronchodilators, which are also used to open up narrowed breathing passages in the lungs. As a matter of fact, the side effects of the latter form include respiratory infections, cough, and headaches. As for the side effects of the pill form, they include feeling tired, vomiting, and joint pains. Unfortunately, the serious side effects of Budesonide include an increased risk of infection, loss of bone strength, and cataracts. Besides, long-term use of the pill form may cause adrenal insufficiency. However, the inhaled form of Budesonide is generally safe in pregnancy