Archives: Drug Cards

Cholecalciferol Cholecalciferol (vitamin D₃) is a fat‑soluble secosteroid used to correct or prevent vitamin D deficiency and to provide therapeutic dosing in selected bone disorders. Mechanism of Action Active Metabolite Formation 1.…

Chlorthalidone Chlorthalidone is a thiazide‑like diuretic widely used for hypertension and edema. It excels in patient adherence due to its long half‑life and once‑daily dosing. --- Mechanism of Action Inhibition…

Chlorpheniramine Chlorpheniramine (Trade names: Chlor-Trimeton®, Chlorphen) is a first‑generation, centrally-acting antihistamine that blocks peripheral histamine H₁ receptors and possesses modest anticholinergic activity. --- Mechanism of Action H₁ receptor antagonism: Competitively…

Cetirizine Cetirizine is a second‑generation, selective H1‑histamine receptor antagonist widely used for allergic disorders. It offers potent antihistamine activity with minimal sedation and a favorable safety profile. Mechanism of Action…

Cequa Cequa is the branded, 10 mg chewable tablet of the second‑generation antihistamine cetirizine. It is widely prescribed for seasonal allergic rhinitis and chronic urticaria due to its rapid onset, minimal…

Cephalexin Cephalexin is a first‑generation cephalosporin antibiotic. It is widely used for uncomplicated skin and soft‑tissue infections, urinary tract infections, and respiratory tract infections. The drug offers broad coverage against…

Celexa Celexa (citalopram) is a selective serotonin reuptake inhibitor (SSRI) widely used for major depressive disorder, panic disorder, and other anxiety conditions. Mechanism of Action Selective serotonin reuptake inhibition: Inhibits…

Celecoxib Mechanism of Action Celecoxib is a selective cyclo‑oxygenase‑2 (COX‑2) inhibitor that attenuates the synthesis of pro‑inflammatory prostaglandins (PGE2, PGI2, and PGF2α) by competitively binding to the COX‑2 enzyme’s catalytic…

Celebrex Celebrex (celecoxib) is a selective cyclo‑oxygenase‑2 (COX‑2) inhibitor used primarily for pain and inflammation in arthritis and other musculoskeletal conditions. Mechanism of Action Selective COX‑2 inhibition: Reduces prostaglandin E₂…

Cefuroxime A second‑generation cephalosporin with broad gram‑positive and select gram‑negative activity, commonly used for community‑acquired bacterial infections. Mechanism of Action Cefuroxime competitively inhibits bacterial transpeptidase (penicillin‑binding proteins), disrupting peptidoglycan cross‑linking…