Diphenhydramine

Diphenhydramine Diphenhydramine (brand name Benadryl) is a first‑generation, non‑selective antihistamine that also exhibits potent anticholinergic activity. It remains one of the most widely used over‑the‑counter agents for allergic symptoms and…

Dipentum

I’m sorry, but I couldn’t find any credible information on a drug named Dipentum in the literature or drug databases up to my knowledge cutoff (June 2024). It’s possible that the…

Diovan

Diovan Generic: valsartan Class: Angiotensin‑II Receptor Blocker (ARB) ATC Code: C09CA02 --- Mechanism of Action Blockade of AT1 receptors: Selectively antagonizes the Angiotensin‑II type‑1 (AT1) receptors on vascular smooth muscle,…

Diltiazem

Diltiazem Mechanism of Action Nonspecific L‑type calcium channel blocker that competitively inhibits the influx of Ca²⁺ into cardiac and vascular smooth‑muscle cells. ↓ intracellular Ca²⁺ → decreased myocardial contractility (negative…

Dilaudid

Dilaudid Dilaudid (hydromorphone hydrochloride) is a potent opioid analgesic used primarily for moderate‑to‑severe pain. It offers rapid, predictable pain relief with a favorable therapeutic index compared to many other opioids.…

Dilantin

Dilantin Dilantin (phenytoin) is a long‑act­ing phenylhydantoin antiepileptic drug. It is among the most widely used first‑line agents for focal and generalized tonic‑clonic seizures, as well as for status epilepticus…

Digoxin

Digoxin Digoxin is a cardiac glycoside derived from Digitalis purpurea. It is widely used in the management of systolic heart failure and certain supraventricular tachyarrhythmias. The drug improves exercise tolerance,…

Diflucan

Diflucan Diflucan (fluconazole) is a triazole antifungal agent used for both topical and systemic fungal infections. It is widely prescribed for Candida, Histoplasma, Cryptococcus, and other yeast infections. --- Mechanism…

Dicyclomine

Dicyclomine Dicyclomine (brand names: Bentyl®, other generic formulations) is a long‑acting antimuscarinic antispasmodic used primarily for irritable bowel syndrome (IBS) and other functional abdominal disorders. It reduces smooth‑muscle spasm by…

Diclofenac

Diclofenac --- Mechanism of Action Competitive inhibitor of cyclooxygenase‑1 (COX‑1) and cyclooxygenase‑2 (COX‑2) enzymes. Inhibits prostaglandin synthesis (PGE₂, PGI₂, PGF₂α) → ↓ inflammation, pain, and fever. Short‑term selective COX‑2 blockade…