Purgatives Purgatives are pharmacological agents that promote the evacuation of the bowel by increasing intestinal motility or altering stool consistency. They act primarily on the intestinal mucosa, smooth muscles, or luminal contents to facilitate the passage of fecal matter. In general pharmacology, purgatives are classified under the broad category of cathartics or laxatives — terms … Read more
Laxatives are substances or medications that promote bowel movements and relieve constipation by increasing the frequency and ease of stool passage. Classification of Laxatives 1. Bulk-forming laxatives Bulk-forming laxatives are a type of laxative that promotes bowel movements by adding bulk and moisture to the stool, facilitating its passage through the intestines. These laxatives are … Read more
Anti-emetics are medications designed to prevent or alleviate nausea and vomiting. These drugs target specific receptors in the brain and gastrointestinal tract involved in the vomiting reflex. Anti-emetics are commonly used in various situations where nausea and vomiting are prevalent, such as during chemotherapy, postoperative recovery, and motion sickness. The goal of anti-emetic treatment is … Read more
Anti-ulcer drugs are a category of medications specifically designed to treat and prevent ulcers in the gastrointestinal tract. These ulcers can occur in various parts of the digestive system, such as the stomach and the duodenum. Classification of Anti-ulcer drugs Anti-ulcer drugs can be classified into several categories based on their mechanisms of action: 1. … Read more
Definition Mucolytic agents are medications designed to break down and thin mucus, making it easier to clear from the respiratory tract. They treat conditions associated with excessive or thickened mucus production, such as respiratory infections, chronic obstructive pulmonary disease (COPD), and cystic fibrosis. Classification of Mucolytic Agents Mucolytic agents can be classified based on their … Read more
Definition Anti-tussive agents are medications designed to suppress or alleviate coughing. They relieve excessive or non-productive coughing associated with various respiratory conditions or respiratory tract irritation. Classification of Anti-Tussive Agents Anti-tussive agents can be classified into different categories based on their mechanisms of action: 1. Opioid-Based Anti-Tussives: Opioid-based antitussives suppress coughing by affecting the central … Read more
Expectorants are medications that facilitate the removal of mucus from the respiratory tract, primarily by increasing the volume or reducing the viscosity of respiratory secretions. They are commonly used to relieve symptoms associated with respiratory conditions, such as coughs and congestion. Expectorants work by promoting mucus clearance, making it easier to cough up and expel. … Read more
Bronchodilators are medications used to relax and widen the airways in the lungs, making breathing easier. They primarily manage respiratory conditions characterized by airway constriction, such as asthma, chronic obstructive pulmonary disease (COPD), and bronchitis. Bronchodilators are classified into three main categories based on their mechanisms of action: beta-2 adrenergic agonists, anticholinergics, and xanthine derivatives. … Read more
Thrombolytic drugs, also known as fibrinolytic drugs, are a class of medications used to dissolve blood clots. They work by activating the body’s fibrinolytic system, which breaks down fibrin, the protein mesh that forms blood clots. In emergencies, healthcare providers use thrombolytic drugs to treat conditions such as acute myocardial infarction (heart attack), ischemic stroke, … Read more
Antiplatelet agents are medications that interfere with the normal process of blood clot formation by affecting platelets and small cell fragments involved in hemostasis (preventing bleeding). These drugs are commonly used to reduce the risk of blood clot-related disorders, particularly in conditions where inappropriate or excessive clotting poses a threat. Definition Antiplatelet agents are drugs … Read more
