NCLEX Pharmacology Articles

NCLEX pharmacology by drug class: what each class does, the safety data to monitor, and how dosage calculations work.

NCLEX pharmacology is less about memorizing drug names than about connecting each drug class to the safety data a nurse checks. NCLEX pharmacology essentials maps what the 2026 NCLEX-RN and NCLEX-PN test plans cover and walks through eight drug classes: ACE inhibitors, beta-1 blockers, loop and potassium-sparing diuretics, insulins, anticoagulants, aminoglycosides and opioid analgesics. For each class it pairs what the drug does with what to monitor, such as the apical pulse and blood pressure before metoprolol, potassium with spironolactone, hypoglycemia with insulin and respiratory depression with morphine. It also explains dosage calculation items: NCSBN asks you to answer in the format the item requests and to round only at the end, an on-screen calculator is available during the exam, and dimensional analysis keeps the units straight. Study by drug class first, then learn the exceptions.