Professional10 min readFebruary 14, 2026

How to Memorize Nursing Drug Dosages and Medications

Conquer pharmacology by memorizing drug dosages and medications using the classification system and mnemonic techniques designed for nursing students.

Pharmacology is one of the most challenging courses in nursing school, and for good reason — patient safety depends on accurate drug knowledge. With hundreds of medications to memorize, it can feel overwhelming. But there is a systematic approach that breaks this mountain into manageable steps and helps you retain the information through the NCLEX and beyond.

The Classification Method

Instead of memorizing individual drugs, start by learning drug classes and their shared characteristics. All beta-blockers end in "-olol" (metoprolol, atenolol, propranolol), they all slow heart rate, and they all require monitoring for bradycardia. Once you know the class, each new drug is just a variation on a theme you already understand.

Key Drug Suffixes to Master

  • -olol: Beta-blockers (cardiac, BP lowering)
  • -pril: ACE inhibitors (BP lowering, renal protection)
  • -sartan: ARBs (BP lowering, ACE alternative)
  • -statin: HMG-CoA reductase inhibitors (cholesterol lowering)
  • -pam / -lam: Benzodiazepines (anxiety, sedation)
  • -cillin: Penicillin antibiotics

The Prototype Drug Approach

For each drug class, learn one prototype drug in depth — its mechanism, dosage range, key side effects, and nursing considerations. Then for other drugs in the class, you only need to remember how they differ from the prototype. This dramatically reduces the total amount of unique information you need to memorize.

Patient safety tip: Always memorize the critical safety criteria for high-alert medications. For example: do not give digoxin if heart rate is below 60 bpm. These checks must be automatic.

Creating Effective Drug Flashcards

Each flashcard should include: drug name and class, mechanism of action in one sentence, 2 to 3 key side effects, and 1 to 2 critical nursing considerations. Keep cards concise and focused on the most testable information.

Spaced Repetition for Pharmacology

Start building your drug flashcard deck from the first day of pharmacology class. Add new drugs as you learn them and review daily using the Memorize app's spaced repetition system. By exam time, you will have reviewed each drug dozens of times at optimal intervals, making recall automatic even under NCLEX pressure.

Frequently Asked Questions

How do nurses memorize so many drug names and dosages?

Nurses use the classification method: learn drug classes (beta-blockers, ACE inhibitors, etc.) and their common suffixes (-olol, -pril). Once you know a class, each new drug follows the pattern. Use mnemonics for exceptions and the Memorize App's spaced repetition to maintain your growing pharmacology knowledge.

What is the best way to study pharmacology for the NCLEX?

Focus on drug classes rather than individual drugs. Learn the prototype drug for each class, then compare others to it. Create flashcards with drug name, class, mechanism, key side effects, and nursing considerations. The Memorize App's spaced repetition ensures you retain everything through exam day.

Master Pharmacology

Download the Memorize app and create drug classification flashcards with spaced repetition to ace your NCLEX pharmacology section.