For the usage and dosage of budesonide nebulizer, the dosage of the drug differs for different ages and populations, such as infants, children, and adults. The dosage of budesonide nebulizer should be increased or decreased according to the condition of the disease and the development of the disease. The dosage for adults is 0.5-1mg twice a day, and the dosage for children will be halved to 0.25-0.5mg twice a day. The dosage will be more when you first start using it. Since budesonide nebulizer cannot be used in large quantities and may have certain side effects after large use, you must consult your doctor about the usage and dosage of budesonide nebulizer.