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Paracetamol (Acetaminophen) Chemical Structure

Paracetamol chemical structure with IUPAC

1. Identification SummaryWidely used non-opioid analgesic and antipyretic for mild–moderate pain and fever; centrally acting with minimal peripheral anti-inflammatory effects. Brand NamesExamples: Tylenol, Panadol, Calpol (brands vary by country). NameParacetamol (Acetaminophen) BackgroundDiscovered in the late 19th–early 20th century and adopted globally as a first-line antipyretic/analgesic. Included in many mono- and combination products across OTC and … Read more

Mechanism of Action of Alprazolam

MOA of Alprazolam

Introduction Alprazolam is a short-acting benzodiazepine widely prescribed for anxiety disorders, panic attacks, and generalized anxiety disorder (GAD). Mechanism of Action of Alprazolam involves potentiation of the inhibitory neurotransmitter gamma-aminobutyric acid (GABA) at the GABA-A receptor, resulting in sedation, anxiolysis, and muscle relaxation. Known by its common brand name Xanax, alprazolam has a rapid onset … Read more

Mechanism of Action of 5-Fluorouracil

MOA of 5-Fluorouracil

Introduction 5-Fluorouracil (5-FU) is an antimetabolite chemotherapeutic drug used in the treatment of various solid tumors, including colorectal, breast, head and neck, and gastrointestinal cancers. Mechanism of Action of 5-Fluorouracil centers on its ability to inhibit DNA and RNA synthesis, leading to impaired cell proliferation. As a pyrimidine analog, 5-FU interferes with rapidly dividing cancer … Read more

Mechanism of Action of Linagliptin

MOA of Linagliptin

Introduction Linagliptin is an oral hypoglycemic drug belonging to the class of dipeptidyl peptidase-4 (DPP-4) inhibitors. It is primarily used in the management of type 2 diabetes mellitus to improve glycemic control. Unlike many other antidiabetic agents, linagliptin has a unique excretion pathway, being mostly eliminated via the enterohepatic system rather than the kidneys, making … Read more

Mechanism of Action of Triptans

MOA of Triptans

Introduction Triptans are a class of drugs primarily used in the acute treatment of migraine and cluster headaches. They are selective serotonin receptor agonists, specifically targeting the 5-HT1B and 5-HT1D subtypes. By reversing the pathophysiological mechanisms of migraine, triptans help relieve headache, nausea, photophobia, and phonophobia. Common drugs in this class include sumatriptan, rizatriptan, and … Read more

Mechanism of Action of Hydroxyurea

MOA of Hydroxyurea

Introduction Hydroxyurea is an antineoplastic and hematologic agent used in the treatment of several conditions including chronic myelogenous leukemia (CML), sickle cell anemia, and certain solid tumors. Its therapeutic effectiveness is derived from its ability to inhibit DNA synthesis and modulate erythropoiesis. Hydroxyurea’s distinct dual mechanism—cytotoxicity in cancer and fetal hemoglobin induction in sickle cell … Read more

Mechanism of Action of Lactulose

Mechanism of action of Lactulose

Introduction Lactulose is a synthetic disaccharide used primarily for the treatment of hepatic encephalopathy and constipation. As a non-absorbable sugar, it exerts its effects locally in the colon through osmotic activity and modulation of gut flora. Its dual action—both osmotic laxative and ammonia-reducing agent—makes it a unique therapeutic agent in hepatic and gastrointestinal conditions. Mechanism … Read more

Mechanism of Action of Orlistat

MOA of Orlistat

Introduction Orlistat is a lipase inhibitor used primarily as an anti-obesity agent. It acts locally within the gastrointestinal tract to reduce the absorption of dietary fats. Unlike centrally acting appetite suppressants, orlistat exerts its effect peripherally without affecting the central nervous system. This makes it a valuable pharmacologic option for long-term weight management in obese … Read more

Mechanism of Action of Budesonide

Mechanism of action of Budesonide

Introduction Budesonide is a potent, non-halogenated glucocorticoid used primarily for its anti-inflammatory and immunosuppressive properties. It is commonly employed in the management of asthma, chronic obstructive pulmonary disease (COPD), inflammatory bowel disease (IBD), and allergic rhinitis. Budesonide’s localized activity and high first-pass metabolism reduce systemic exposure, making it a preferred option for targeted anti-inflammatory therapy. … Read more

RN Pharmacology Free Online Practice TEST 2023 B | Set-4

RN Pharmacology Free Online Practice TEST 2023 B | Set-4 RN Pharmacology Free Online Practice TEST 2023 B | Set-4 Time Remaining 60:00 RN Pharmacology Free Online Practice TEST 2023 B | Set-4 New, non-repeating questions aligned with the ATI RN Pharmacology (CMS) 2023 blueprint. You’ll answer 60 MCQs in 60 minutes, distributed across safety, … Read more

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