Archives: Drug Cards

Nasacort Nasacort (triamcinolone acetonide nasal spray) is a first‑generation intranasal corticosteroid used primarily for allergic rhinitis and related nasal disorders. Mechanism of Action Receptor Activation: Triamcinolone acetonide binds glucocorticoid receptors…

Narcan Mechanism of Action Naloxone is a high‑affinity, non‑selective opioid antagonist that competitively displaces opioid ligands (e.g., morphine, fentanyl, oxycodone) from μ‑, κ‑, and δ‑opioid receptors. Rapidly reverses opioid‑induced respiratory…

Naproxen Mechanism of Action Naproxen is a non‑steroidal anti‑inflammatory drug (NSAID) that exerts its effects by competitively inhibiting cellular cyclo‑oxygenase (COX) enzymes. COX‑1 inhibition → ↓ prostaglandin synthesis → reduced…

Naprosyn Naprosyn (generic: naproxen) is a non‑steroidal anti‑inflammatory drug (NSAID) widely used for pain, inflammation, and fever control. Mechanism of Action Selective COX inhibition: Naproxen preferentially blocks cyclo‑oxygenase‑1 (COX‑1) and…

Namenda Namenda (generic memantine hydrochloride) is an NMDA receptor antagonist approved as adjunct therapy for moderate‑to‑severe Alzheimer's dementia. Mechanism of Action Non‑competitive NMDA receptor blockade: Memantine binds inside the ion…

Naltrexone Naltrexone is a competitive opioid receptor antagonist widely used in the pharmacologic management of opioid and alcohol dependence. --- Mechanism of Action Naltrexone primarily acts as a potent, selective…

Naloxone Mechanism of Action Naloxone is a non‑selective, high‑affinity opioid receptor antagonist. It competitively binds to μ, κ, and δ opioid receptors, displacing opioid agonists and reversing their pharmacologic effects.…

Nadolol Nadolol is a non‑selective, competitive β‑adrenergic antagonist. It is commonly prescribed for hypertension, angina, and various arrhythmias. Mechanism of Action Competitive inhibition of β₁- and β₂-adrenergic receptors in cardiac,…

NAC --- Mechanism of Action N‑acetylcysteine (NAC) is a semisynthetic derivative of the amino‑acid cysteine that functions through several complementary pharmacologic pathways, which collectively confer its therapeutic utility. 1. Glutathione…

Nabumetone Nabumetone is a non‑steroidal anti‑inflammatory drug (NSAID) that is widely used for the treatment of rheumatoid arthritis, osteoarthritis, and acute musculoskeletal pain. It is a pro‑drug that is converted…