This particular illness is a type of asthmatic condition where the bronchi and the lower airway of the respiratory system is inflamed by irritants and allergens. In allergic bronchitis, asthma and respiratory allergies are present. This can cause a condition called hay fever or allergic rhinitis. Allergic bronchitis is also commonly called as allergic asthma. This particular condition is triggered by an overly active immune system that attacks harmless foreign substances that enters the body. The immune system identifies the foreign substance as dangerous and releases antibodies to fight the substance.
BRAND NAME: None available. DRUG CLASS AND MECHANISM: Propylthiouracil (PTU) is an oral medication that is used to manage hyperthyroidism which is due to an overactive thyroid gland. It is an anti-thyroid drug that has a mechanism of action that is similar to methimazole (Tapazole). Graves' disease is the most common cause of hyperthyroidism.
From left to right: the two isomeric groups propyl and 1-methylethyl (or isopropyl), and the non-isomeric cyclopropyl group. In organic chemistry, propyl is a linear three-carbon alkyl substituent with chemical formula âCH 2CH 2CH 3. It is the substituent form obtained by removing one hydrogen atom attached to the terminal carbon of propane. A propyl substituent is often represented in organic chemistry with the symbol Pr (not to be confused with the element praseodymium). There is an isomeric form of propyl named 1-methylethyl or isopropyl obtained by removing a hydrogen ion (proton) attached to the middle carbon of propane. Linear propyl is sometimes termed normal and written with a prefix n- (i.e., n-propyl).