These medications may also be taken presently to prevent future illnesses and not necessarily ameliorate pre-existing illnesses in the host. The different medications produced by the different drug companies are usually patented which give due rights for the manufacturer to exclusively produce and distribute them. Medications with expired patents may be massed produced without brand names and are often referred to as "Generics" medications. Generics drugs are often produced and manufactured without any legal burden on patent laws. The Anatomical Therapeutic Chemical Classification ATC is one of the most comprehensive and elaborate means to classify therapeutic drugs.
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Anti-Asthmatic Drugs Drugs for treating asthma are divided into two categories: 1 Quick-relief medications which are used to relief acute asthma and 2 Long-term asthma control medications with which are used as prophylactic measures details below:- 1. Quick-relief medications: they are used as needed for rapid, short-term symptom relief during an asthma attack. Types of quick-relief medications are: a.
Short-acting beta2 agonists: these inhaled, quick-relief bronchodilators act within minutes to rapidly ease symptoms during an asthma attack. Short-acting beta2 agonists can be taken using a portable, hand-held inhaler or a nebulizer. Examples are salbutamol and terbutaline. Antimuscarinics: these inhaled antimuscarinics act quickly to immediately relax the airways, like other bronchodilators, making it easier to breathe.
Examples are ipratropium and tiotropium. Systemic corticosteroids: these systemic corticosteroids i. However, due to serious side effects when used long term, the systemic routes are used only on a short-term basis to treat severe asthma symptoms.
Examples are prednisone and methylprednisone. Intravenous xanthines: these xanthines relax smooth muscle and to relieve bronchial spasm and are indicated for severe asthma attack. Example is aminophylline. Long-term asthma control medications: they work to reduce the amount of inflammation in the airways and prevent asthma attacks occurring.
Inhaled corticosteroids: they are the most effective preventers, however, you may need to use these medications for several days to weeks before they reach their maximum benefit.
Examples are fluticasone and budesonide. Long-acting beta2 agonists: these inhaled medications open the airways. Some research shows that they may increase the risk of a severe asthma attack, unless they are used in combination with an inhaled corticosteroid.
Examples are salmeterol and formoterol. Leukotriene inhibitors: they act against one of the inflammatory components of asthma and provide protection against bronchoconstriction when taken before exercise or exposure to allergen or to cold air. Examples of leukotriene inhibitors include montelukast and zafirlukast.
Xanthines: apart from relaxation of bronchial muscle and relief of bronchial spasm, they can stimulant effects on respiration and have anti-inflammatory effects.
Example is theophylline.
Antiasthmatics (Antiasthmatic Drugs) — Definition and Classification