Types of Bronchitis. Acute infectious bronchitis commonly accompanies or follows a URI; it develops over a couple of days, produces symptoms for 3 to 7 days, and resolves to a cough before normal respiratory function is recovered. Acute irritative bronchitis is triggered by allergies and chemical and other types of environmental irritants.
Reserve propylthiouracil use for those unable to tolerate other treatments (eg, methimazole, radioactive iodine, surgery) Propylthiouracil may be the treatment of choice during and just before the first trimester of pregnancy (strong association of methimazole with congenital malformation during first trimester)
Propylthiouracil is a prescription antithyroid medication used to treat an overactive thyroid (known medically as hyperthyroidism). Because of the risk of serious liver problems, it is usually reserved only for use in people who are allergic to or cannot tolerate methimazole (Tapazole Â®), a safer antithyroid medication, or for women in the first trimester of pregnancy.