Introduction Rivaroxaban is an oral anticoagulant belonging to the class of direct Factor Xa inhibitors. It is commonly prescribed for the prevention and treatment of thromboembolic disorders such as deep vein thrombosis (DVT), pulmonary embolism (PE), and stroke prevention in non-valvular atrial fibrillation. Unlike warfarin, rivaroxaban has a predictable pharmacokinetic profile and does not require … Read more
Introduction Ketamine is a unique anesthetic agent known for its dissociative anesthesia and analgesic properties. It is widely used in emergency medicine, anesthesia, and pain management. Unlike conventional GABAergic sedatives, ketamine works primarily by antagonizing the NMDA receptor, resulting in a trance-like state with preserved airway reflexes and spontaneous respiration. Mechanism of Action (Step-wise) 1. … Read more
Introduction Terlipressin is a synthetic vasopressin analogue and prodrug of lysine-vasopressin, primarily used to manage acute variceal bleeding and hepatorenal syndrome (HRS) in patients with advanced liver disease. It exerts selective vasoconstrictive effects through vasopressin V1 receptors, targeting the splanchnic circulation to improve effective arterial blood volume and renal perfusion. Mechanism of Action (Step-wise) 1. … Read more
Introduction Pyridostigmine is a reversible acetylcholinesterase inhibitor of the quaternary ammonium carbamate class. It is primarily used to treat myasthenia gravis, reverse nondepolarizing neuromuscular blockade, and has a role in certain autonomic dysfunctions. Known for its peripheral action and minimal central nervous system penetration, pyridostigmine improves neuromuscular transmission by increasing acetylcholine availability at synapses. Mechanism … Read more
Introduction Phenytoin is a first-generation anticonvulsant and hydantoin derivative widely utilized for the management of generalized tonic-clonic seizures, complex partial seizures, and status epilepticus. It also has historical use in certain cardiac arrhythmias. Known for its narrow therapeutic index, phenytoin requires careful dosing and monitoring, yet remains a mainstay in epilepsy therapy due to its … Read more
Mechanism of Action of Miralax Introduction Miralax, with the active ingredient polyethylene glycol 3350 (PEG 3350), is a commonly used osmotic laxative indicated for the treatment of occasional constipation. Its popularity stems from its non-stimulant mechanism, gentle action on the gastrointestinal tract, and favorable safety profile. Miralax does not cause dependency and is generally well-tolerated, … Read more
