Guano, Histoplasmosis, and Our Service. Large accumulations of guano sometimes breeds a fungus called Histoplasmosis (see article, Is Bat Guano Dangerous?). This fungus can infect an eye or a lung, and in a serious case, you can lose your eye or lung to this infection.
Cromolyn sodium and nedocromil are prescribed as aerosols in metered dose inhalers (MDIs). Generally, you'll need to take either drug four times a day, but nedocromil has also been effective in a twice-per-day dose.
Proper Use. Cromolyn oral inhalation is used to help prevent symptoms of asthma or bronchospasm (wheezing or difficulty in breathing). Cromolyn will not relieve an asthma or a bronchospasm attack that has already started. It is important to use cromolyn at regular times as directed by your doctor. Use cromolyn inhalation only as directed. Do not use more of it and do not use it more often than your doctor ordered.