What should I know about Asmanex before taking it?

Asmanex (mometasone) will not treat an asthma attack, but rather works to prevent it. See your doctor if your symptoms get worse or don't improve.  Asmanex can increase your risk of infection. The effects of Asmanex on a fetus have not been determined. Children under four years of age should not use the drug, as it may affect growth. Asmanex can also contribute to the development of osteoporosis, a bone-thinning disease.