Pro tip: The NCLEX rarely asks you to name a drug from scratch. It tests whether you know what to do with the drug — when to hold it, what to monitor, and what to teach the patient. Study with that lens.\n
Cardiovascular medications dominate the NCLEX. Expect questions on blood pressure management, heart failure, anticoagulation, and rhythm control. Focus on when to hold, what to monitor, and critical patient education.
\nKey drugs: metoprolol, atenolol, propranolol, carvedilol
Mechanism: Block beta-adrenergic receptors → decrease heart rate, blood pressure, and cardiac workload.
NCLEX nursing priority: Check apical pulse for 1 full minute before giving. Hold if HR < 60 bpm or systolic BP < 90 mmHg. Never stop abruptly — taper to avoid rebound hypertension.
High-alert flag: Can mask hypoglycemia symptoms in diabetic patients.
Memory trick: \"-olol = Oh-so-LOw heart rate\"
\nKey drugs: lisinopril, enalapril, captopril, ramipril
Mechanism: Block angiotensin-converting enzyme → decrease blood pressure by preventing vasoconstriction and aldosterone release.
NCLEX nursing priority: Monitor potassium (hyperkalemia risk). Teach patient to report persistent dry cough (switch to ARB if intolerable). Contraindicated in pregnancy (Category X).
Memory trick: \"-pril = Pressure Reducing In Lungs\"
\nKey drugs: losartan, valsartan, irbesartan
Mechanism: Block angiotensin II receptors directly — similar effect to ACE inhibitors but without the dry cough.
NCLEX nursing priority: Same hyperkalemia monitoring as ACE inhibitors. Same pregnancy contraindication. Common NCLEX scenario: patient switched from ACE inhibitor due to cough → ARB is the answer.
\nKey drugs: amlodipine, nifedipine (vascular); diltiazem, verapamil (cardiac + vascular)
Mechanism: Block calcium channels → vasodilation and reduced cardiac contractility.
NCLEX nursing priority: Monitor for peripheral edema (especially with dihydropyridines). Avoid grapefruit juice — increases drug levels. Diltiazem and verapamil also slow heart rate (do not combine with beta-blockers without caution).
\nHeparin (IV/SubQ)
Warfarin (Coumadin) — oral
Enoxaparin (Lovenox) — SubQ
Mechanism: Increases cardiac contractility (positive inotrope), slows heart rate (negative chronotrope).
NCLEX nursing priority: Check apical pulse for 1 full minute. Hold if HR < 60 bpm in adults, < 70 in children. Therapeutic range: 0.5–2.0 ng/mL.
Toxicity signs: Nausea, vomiting, halos around lights, bradycardia. Hypokalemia increases digoxin toxicity risk — always check potassium.
Memory trick: \"Dig the K\" — Digoxin and potassium are best friends. Low K = dig toxicity.
\nKey drugs: atorvastatin, simvastatin, rosuvastatin
Mechanism: Inhibit HMG-CoA reductase → lower LDL cholesterol.
NCLEX nursing priority: Administer at bedtime (peak cholesterol synthesis at night). Monitor liver enzymes. Report unexplained muscle pain immediately (rhabdomyolysis risk).
\nRespiratory questions focus on understanding the difference between rescue inhalers and maintenance inhalers, and correct inhaler technique.
\nKey drug: albuterol (ProAir, Ventolin)
Mechanism: Relax bronchial smooth muscle → rapid bronchodilation.
NCLEX nursing priority: This is the RESCUE inhaler. Use BEFORE corticosteroid inhaler. If using more than 2×/week, asthma is not well-controlled.
Side effects: Tachycardia, tremors, nervousness.
\nKey drugs: fluticasone, budesonide, beclomethasone
Mechanism: Reduce airway inflammation (maintenance, NOT rescue).
NCLEX nursing priority: Rinse mouth after each use to prevent oral thrush (candidiasis). Use a spacer with MDI. Takes days to weeks for full effect — not for acute attacks.
\nCNS drugs are tested heavily across multiple NCLEX categories. Pay attention to safety: fall precautions, serotonin syndrome, and neuroleptic malignant syndrome.
\nKey drugs: lorazepam (Ativan), diazepam (Valium), midazolam (Versed), alprazolam (Xanax)
Mechanism: Enhance GABA activity → sedation, anxiolysis, anticonvulsant effects.
NCLEX nursing priority: Monitor respiratory status (CNS depression). Implement fall precautions. Do NOT stop abruptly — risk of seizures. Avoid alcohol.
Antidote: Flumazenil (Romazicon)
\nKey drugs: fluoxetine (Prozac), sertraline (Zoloft), escitalopram (Lexapro)
Mechanism: Block serotonin reuptake → increase serotonin availability in the brain.
NCLEX nursing priority: Takes 2–4 weeks for therapeutic effect. Black box warning: increased suicidal ideation in children and adolescents. Watch for serotonin syndrome (hyperthermia, agitation, tremor, clonus) — especially when combined with MAOIs or triptans.
\nKey drugs: morphine, hydromorphone (Dilaudid), fentanyl, oxycodone
Mechanism: Bind to mu-opioid receptors → pain relief, sedation, respiratory depression.
NCLEX nursing priority: Monitor respiratory rate — hold if RR < 12 breaths/min. Assess pain using a validated scale. Anticipate constipation (start bowel regimen prophylactically).
Antidote: Naloxone (Narcan) — reverses opioid effects within 2 minutes IV.
Memory trick: \"Nal-OX-one knocks out opioids.\"
\nKey drugs: olanzapine, quetiapine, risperidone, aripiprazole
Mechanism: Block dopamine D2 and serotonin 5-HT2A receptors.
NCLEX nursing priority: Monitor for metabolic syndrome — weight gain, hyperglycemia, hyperlipidemia. Check fasting glucose and lipids regularly. Watch for extrapyramidal symptoms (EPS) and report signs of neuroleptic malignant syndrome (fever, rigidity, altered mental status).
\nAntibiotic questions focus on allergies, proper administration, therapeutic drug monitoring, and patient education about completing the full course.
\nKey drugs: amoxicillin, ampicillin, piperacillin
Mechanism: Inhibit bacterial cell wall synthesis.
NCLEX nursing priority: Always ask about penicillin allergy FIRST. Cross-sensitivity with cephalosporins exists (5–10%). Watch for anaphylaxis — have epinephrine available. Complete the full course.
\nKey drugs: gentamicin, tobramycin, amikacin
Mechanism: Inhibit bacterial protein synthesis (bactericidal).
NCLEX nursing priority: Monitor peak and trough levels. Watch for ototoxicity (tinnitus, hearing loss) and nephrotoxicity (rising creatinine, decreased urine output). Ensure adequate hydration.
Memory trick: \"A Mean Guy damages ears and kidneys\" (AminoGlycoside).
\nKey drugs: ciprofloxacin, levofloxacin, moxifloxacin
Mechanism: Inhibit DNA gyrase and topoisomerase IV.
NCLEX nursing priority: Black box warning: tendon rupture and tendinitis. Avoid in children. Take with water on an empty stomach (avoid dairy, antacids, iron — chelation). Photosensitivity — wear sunscreen.
\nMechanism: Inhibits cell wall synthesis — reserved for MRSA and C. difficile.
NCLEX nursing priority: Monitor trough levels (15–20 mcg/mL for serious infections). Infuse slowly over 60+ minutes — rapid infusion causes Red Man Syndrome (flushing, hypotension). Monitor renal function.
\nEndocrine pharmacology — especially insulin and newer diabetes drugs — is one of the most heavily tested categories on the NCLEX.
\nThis is an absolute must-know. The NCLEX loves insulin onset, peak, and duration questions.
| Type | Example | Onset | Peak | Duration |
|---|---|---|---|---|
| Rapid-acting | Lispro, Aspart | 15 min | 1–2 hr | 3–5 hr |
| Short-acting | Regular (Humulin R) | 30–60 min | 2–4 hr | 6–8 hr |
| Intermediate | NPH (Humulin N) | 1–2 hr | 4–12 hr | 18–24 hr |
| Long-acting | Glargine (Lantus) | 1–2 hr | No peak | 24 hr |
Critical facts: Only regular insulin can be given IV. When mixing NPH with regular, draw up Regular first (\"clear before cloudy\"). Glargine is NEVER mixed with other insulins.
Memory trick: \"RN\" — Regular before NPH.
\nKey drugs: semaglutide (Ozempic/Wegovy), liraglutide (Victoza), dulaglutide (Trulicity)
Mechanism: Mimic incretin hormones → stimulate insulin secretion, suppress glucagon, slow gastric emptying.
NCLEX nursing priority: Inject subcutaneously (not IV). Monitor for pancreatitis (severe abdominal pain radiating to back). Causes nausea and weight loss — counsel patients this is expected. Newer NCLEX favorite.
\nKey drugs: empagliflozin (Jardiance), dapagliflozin (Farxiga), canagliflozin (Invokana)
Mechanism: Block glucose reabsorption in the kidneys → glucose excreted in urine.
NCLEX nursing priority: Monitor for UTIs and genital yeast infections (glycosuria creates a breeding ground). Watch for euglycemic diabetic ketoacidosis — DKA with normal blood glucose. Also indicated for heart failure (expanding use).
\nMechanism: Synthetic T4 — replaces thyroid hormone in hypothyroidism.
NCLEX nursing priority: Take on an empty stomach, 30–60 minutes before breakfast. Monitor for signs of hyperthyroidism (toxicity): tachycardia, weight loss, tremors, heat intolerance. Interacts with calcium and iron supplements (separate by 4 hours).
\nThese drugs show up in priority-setting and delegation questions. Know them cold.
\nUses: Anaphylaxis, cardiac arrest, severe asthma.
NCLEX key facts: First-line for anaphylaxis (IM in lateral thigh). In cardiac arrest: 1 mg IV/IO every 3–5 minutes. Monitor heart rhythm continuously.
\nUse: Supraventricular tachycardia (SVT).
NCLEX key facts: Causes brief asystole (warn the patient). Push fast with a rapid NS flush. Patient must be on continuous telemetry.
\nUses: Pre-eclampsia/eclampsia seizure prophylaxis, torsades de pointes, hypomagnesemia.
NCLEX nursing priority: Monitor deep tendon reflexes (DTRs) — absent DTRs = toxicity. Monitor respiratory rate (hold if < 12). Monitor urine output (≥30 mL/hr). Antidote: Calcium gluconate.
\nUse: Hypokalemia replacement.
NCLEX nursing priority: NEVER give IV push — fatal cardiac arrest risk. Always dilute and infuse slowly (max 10 mEq/hr peripherally). Monitor cardiac rhythm. Check renal function first.
\nHigh-Alert Reminder: The Institute for Safe Medication Practices (ISMP) classifies concentrated potassium, insulin, heparin, and opioids as high-alert medications. The NCLEX loves to test safety protocols around these drugs.\n
If the NCLEX asks about toxicity, it's usually asking for the antidote. Memorize this table.
\n| Drug/Toxin | Antidote |
|---|---|
| Heparin | Protamine sulfate |
| Warfarin | Vitamin K (phytonadione) |
| Benzodiazepines | Flumazenil (Romazicon) |
| Opioids | Naloxone (Narcan) |
| Acetaminophen (Tylenol) | Acetylcysteine (Mucomyst) |
| Digoxin | Digoxin immune Fab (Digibind) |
| Magnesium sulfate | Calcium gluconate |
| Methotrexate | Leucovorin (folinic acid) |
| Lead poisoning | EDTA, succimer, dimercaprol |
| Organophosphates | Atropine + pralidoxime |
You now have the 50 most-tested drugs organized exactly how the NCLEX presents them. But reading a cheat sheet isn't the same as being tested on it.
Open NCLEX RN Mastery and filter to Pharmacology questions. The adaptive algorithm identifies exactly which drug classes you're weakest in and drills them until you've locked them in. That's how 3.2 million nurses studied — and passed.
","body_text":"Study with the right lens\nThe NCLEX rarely asks you to name a drug from scratch. It tests whether you know what to do with the drug — when to hold it, what to monitor, and what to teach the patient. Study with that lens.\n\nOrganize drugs by the body system they act on — the mental model this cheat sheet is built around. — Human body silhouette mapping NCLEX drug classes to the body system they act on: cardiovascular at the heart, respiratory at the lungs, CNS at the brain, anti-infectives as a whole-body immune zone, and endocrine at the pancreas and thyroid\n\nCardiovascular Drugs\n\nCardiovascular medications dominate the NCLEX. Expect questions on blood pressure management, heart failure, anticoagulation, and rhythm control. Focus on when to hold, what to monitor, and critical patient education.\n\nBeta-Blockers (-olol)\n\n• Key drugs: metoprolol, atenolol, propranolol, carvedilol\n• Mechanism: Block beta-adrenergic receptors, decreasing heart rate, blood pressure, and cardiac workload.\n• NCLEX nursing priority: Check apical pulse for 1 full minute before giving. Hold if HR < 60 bpm or systolic BP < 90 mmHg. Never stop abruptly — taper to avoid rebound hypertension.\n• High-alert flag: Can mask hypoglycemia symptoms in diabetic patients.\n• Memory trick: \"-olol = Oh-so-LOw heart rate.\"\n\nACE Inhibitors (-pril)\n\n• Key drugs: lisinopril, enalapril, captopril, ramipril\n• Mechanism: Block angiotensin-converting enzyme, decreasing blood pressure by preventing vasoconstriction and aldosterone release.\n• NCLEX nursing priority: Monitor potassium (hyperkalemia risk). Teach the patient to report a persistent dry cough (switch to an ARB if intolerable). Contraindicated in pregnancy (Category X).\n• Memory trick: \"-pril = Pressure Reducing In Lungs.\"\n\nARBs (-sartan)\n\n• Key drugs: losartan, valsartan, irbesartan\n• Mechanism: Block angiotensin II receptors directly — similar effect to ACE inhibitors but without the dry cough.\n• NCLEX nursing priority: Same hyperkalemia monitoring as ACE inhibitors, and the same pregnancy contraindication. Common NCLEX scenario: a patient switched from an ACE inhibitor due to cough — the ARB is the answer.\n\nCalcium Channel Blockers (-dipine)\n\n• Key drugs: amlodipine, nifedipine (vascular); diltiazem, verapamil (cardiac + vascular)\n• Mechanism: Block calcium channels, causing vasodilation and reduced cardiac contractility.\n• NCLEX nursing priority: Monitor for peripheral edema (especially with dihydropyridines). Avoid grapefruit juice — it increases drug levels. Diltiazem and verapamil also slow heart rate (do not combine with beta-blockers without caution).\n\nAnticoagulants\n\nHeparin (IV/SubQ):\n\n• Monitor: aPTT (activated partial thromboplastin time) — target 1.5–2.5x control\n• Antidote: Protamine sulfate\n• Never rub the SubQ injection site\n\nWarfarin (Coumadin) — oral:\n\n• Monitor: PT/INR — target INR 2.0–3.0 (2.5–3.5 for mechanical heart valves)\n• Antidote: Vitamin K (phytonadione)\n• Avoid foods high in vitamin K (consistent intake, not elimination)\n• Interacts with MANY drugs — always check\n\nEnoxaparin (Lovenox) — SubQ:\n\n• Low-molecular-weight heparin — does NOT require routine aPTT monitoring\n• Inject in the abdomen; do not aspirate or rub\n\nDigoxin (Lanoxin)\n\n• Mechanism: Increases cardiac contractility (positive inotrope) and slows heart rate (negative chronotrope).\n• NCLEX nursing priority: Check apical pulse for 1 full minute. Hold if HR < 60 bpm in adults, < 70 in children. Therapeutic range: 0.5–2.0 ng/mL.\n• Toxicity signs: Nausea, vomiting, halos around lights, bradycardia. Hypokalemia increases digoxin toxicity risk — always check potassium.\n• Memory trick: \"Dig the K\" — digoxin and potassium are best friends. Low K = dig toxicity.\n\nStatins (-statin)\n\n• Key drugs: atorvastatin, simvastatin, rosuvastatin\n• Mechanism: Inhibit HMG-CoA reductase, lowering LDL cholesterol.\n• NCLEX nursing priority: Administer at bedtime (peak cholesterol synthesis at night). Monitor liver enzymes. Report unexplained muscle pain immediately (rhabdomyolysis risk).\n\nRespiratory Drugs\n\nRespiratory questions focus on understanding the difference between rescue inhalers and maintenance inhalers, and correct inhaler technique.\n\nRescue vs. maintenance: a fast bronchodilator relieves an attack; a daily anti-inflammatory prevents one — know which is which. — Side-by-side contrast of inhaler roles: a rescue inhaler delivering a fast burst that opens a constricted airway for rapid relief, versus a maintenance inhaler delivering a steady daily mist that calms an inflamed airway over time\n\nShort-Acting Beta-2 Agonists (SABAs)\n\n• Key drug: albuterol (ProAir, Ventolin)\n• Mechanism: Relax bronchial smooth muscle for rapid bronchodilation.\n• NCLEX nursing priority: This is the RESCUE inhaler. Use BEFORE the corticosteroid inhaler. If using more than 2x/week, asthma is not well-controlled.\n• Side effects: Tachycardia, tremors, nervousness.\n\nInhaled Corticosteroids (ICS)\n\n• Key drugs: fluticasone, budesonide, beclomethasone\n• Mechanism: Reduce airway inflammation (maintenance, NOT rescue).\n• NCLEX nursing priority: Rinse mouth after each use to prevent oral thrush (candidiasis). Use a spacer with an MDI. Takes days to weeks for full effect — not for acute attacks.\n\nCentral Nervous System & Psychiatric Drugs\n\nCNS drugs are tested heavily across multiple NCLEX categories. Pay attention to safety: fall precautions, serotonin syndrome, and neuroleptic malignant syndrome.\n\nBenzodiazepines (-pam, -lam)\n\n• Key drugs: lorazepam (Ativan), diazepam (Valium), midazolam (Versed), alprazolam (Xanax)\n• Mechanism: Enhance GABA activity for sedation, anxiolysis, and anticonvulsant effects.\n• NCLEX nursing priority: Monitor respiratory status (CNS depression). Implement fall precautions. Do NOT stop abruptly — risk of seizures. Avoid alcohol.\n• Antidote: Flumazenil (Romazicon)\n\nSSRIs\n\n• Key drugs: fluoxetine (Prozac), sertraline (Zoloft), escitalopram (Lexapro)\n• Mechanism: Block serotonin reuptake, increasing serotonin availability in the brain.\n• NCLEX nursing priority: Takes 2–4 weeks for therapeutic effect. Black box warning: increased suicidal ideation in children and adolescents. Watch for serotonin syndrome (hyperthermia, agitation, tremor, clonus) — especially when combined with MAOIs or triptans.\n\nOpioid Analgesics\n\n• Key drugs: morphine, hydromorphone (Dilaudid), fentanyl, oxycodone\n• Mechanism: Bind to mu-opioid receptors for pain relief, sedation, and respiratory depression.\n• NCLEX nursing priority: Monitor respiratory rate — hold if RR < 12 breaths/min. Assess pain using a validated scale. Anticipate constipation (start a bowel regimen prophylactically).\n• Antidote: Naloxone (Narcan) — reverses opioid effects within 2 minutes IV.\n• Memory trick: \"Nal-OX-one knocks out opioids.\"\n\nAtypical Antipsychotics (-pine, -done)\n\n• Key drugs: olanzapine, quetiapine, risperidone, aripiprazole\n• Mechanism: Block dopamine D2 and serotonin 5-HT2A receptors.\n• NCLEX nursing priority: Monitor for metabolic syndrome — weight gain, hyperglycemia, hyperlipidemia. Check fasting glucose and lipids regularly. Watch for extrapyramidal symptoms (EPS) and report signs of neuroleptic malignant syndrome (fever, rigidity, altered mental status).\n\nAntibiotics & Anti-Infectives\n\nAntibiotic questions focus on allergies, proper administration, therapeutic drug monitoring, and patient education about completing the full course.\n\nPenicillins (-cillin)\n\n• Key drugs: amoxicillin, ampicillin, piperacillin\n• Mechanism: Inhibit bacterial cell wall synthesis.\n• NCLEX nursing priority: Always ask about penicillin allergy FIRST. Cross-sensitivity with cephalosporins exists (5–10%). Watch for anaphylaxis — have epinephrine available. Complete the full course.\n\nAminoglycosides (-mycin, -micin)\n\n• Key drugs: gentamicin, tobramycin, amikacin\n• Mechanism: Inhibit bacterial protein synthesis (bactericidal).\n• NCLEX nursing priority: Monitor peak and trough levels. Watch for ototoxicity (tinnitus, hearing loss) and nephrotoxicity (rising creatinine, decreased urine output). Ensure adequate hydration.\n• Memory trick: \"A Mean Guy damages ears and kidneys\" (AminoGlycoside).\n\nFluoroquinolones (-floxacin)\n\n• Key drugs: ciprofloxacin, levofloxacin, moxifloxacin\n• Mechanism: Inhibit DNA gyrase and topoisomerase IV.\n• NCLEX nursing priority: Black box warning — tendon rupture and tendinitis. Avoid in children. Take with water on an empty stomach (avoid dairy, antacids, and iron — chelation). Photosensitivity — wear sunscreen.\n\nVancomycin\n\n• Mechanism: Inhibits cell wall synthesis — reserved for MRSA and C. difficile.\n• NCLEX nursing priority: Monitor trough levels (15–20 mcg/mL for serious infections). Infuse slowly over 60+ minutes — rapid infusion causes Red Man Syndrome (flushing, hypotension). Monitor renal function.\n\nEndocrine Drugs\n\nEndocrine pharmacology — especially insulin and newer diabetes drugs — is one of the most heavily tested categories on the NCLEX.\n\nInsulin Types\n\nThis is an absolute must-know. The NCLEX loves insulin onset, peak, and duration questions.\n\nInsulin onset, peak, and duration by type\nType | Example | Onset | Peak | Duration\nRapid-acting: Lispro, Aspart | 15 min | 1–2 hr | 3–5 hr\nShort-acting: Regular (Humulin R) | 30–60 min | 2–4 hr | 6–8 hr\nIntermediate: NPH (Humulin N) | 1–2 hr | 4–12 hr | 18–24 hr\nLong-acting: Glargine (Lantus) | 1–2 hr | No peak | 24 hr\n\n• Critical facts: Only regular insulin can be given IV. When mixing NPH with regular, draw up Regular first (\"clear before cloudy\"). Glargine is NEVER mixed with other insulins.\n• Memory trick: \"RN\" — Regular before NPH.\n\nGLP-1 Receptor Agonists (-glutide)\n\n• Key drugs: semaglutide (Ozempic/Wegovy), liraglutide (Victoza), dulaglutide (Trulicity)\n• Mechanism: Mimic incretin hormones — stimulate insulin secretion, suppress glucagon, and slow gastric emptying.\n• NCLEX nursing priority: Inject subcutaneously (not IV). Monitor for pancreatitis (severe abdominal pain radiating to the back). Causes nausea and weight loss — counsel patients that this is expected. A newer NCLEX favorite.\n\nSGLT2 Inhibitors (-gliflozin)\n\n• Key drugs: empagliflozin (Jardiance), dapagliflozin (Farxiga), canagliflozin (Invokana)\n• Mechanism: Block glucose reabsorption in the kidneys — glucose is excreted in urine.\n• NCLEX nursing priority: Monitor for UTIs and genital yeast infections (glycosuria creates a breeding ground). Watch for euglycemic diabetic ketoacidosis — DKA with normal blood glucose. Also indicated for heart failure (expanding use).\n\nLevothyroxine (Synthroid)\n\n• Mechanism: Synthetic T4 — replaces thyroid hormone in hypothyroidism.\n• NCLEX nursing priority: Take on an empty stomach, 30–60 minutes before breakfast. Monitor for signs of hyperthyroidism (toxicity): tachycardia, weight loss, tremors, heat intolerance. Interacts with calcium and iron supplements (separate by 4 hours).\n\nEmergency & High-Alert Drugs\n\nThese drugs show up in priority-setting and delegation questions. Know them cold.\n\nEpinephrine\n\n• Uses: Anaphylaxis, cardiac arrest, severe asthma.\n• NCLEX key facts: First-line for anaphylaxis (IM in the lateral thigh). In cardiac arrest: 1 mg IV/IO every 3–5 minutes. Monitor heart rhythm continuously.\n\nAdenosine\n\n• Use: Supraventricular tachycardia (SVT).\n• NCLEX key facts: Causes brief asystole (warn the patient). Push fast with a rapid NS flush. The patient must be on continuous telemetry.\n\nMagnesium Sulfate\n\n• Uses: Pre-eclampsia/eclampsia seizure prophylaxis, torsades de pointes, hypomagnesemia.\n• NCLEX nursing priority: Monitor deep tendon reflexes (DTRs) — absent DTRs = toxicity. Monitor respiratory rate (hold if < 12). Monitor urine output (>=30 mL/hr). Antidote: Calcium gluconate.\n\nPotassium Chloride (KCl)\n\n• Use: Hypokalemia replacement.\n• NCLEX nursing priority: NEVER give IV push — fatal cardiac arrest risk. Always dilute and infuse slowly (max 10 mEq/hr peripherally). Monitor cardiac rhythm. Check renal function first.\n\nHigh-alert reminder\nThe Institute for Safe Medication Practices (ISMP) classifies concentrated potassium, insulin, heparin, and opioids as high-alert medications. The NCLEX loves to test safety protocols around these drugs.\n\nAntidotes Quick Reference\n\nIf the NCLEX asks about toxicity, it's usually asking for the antidote. Memorize this table.\n\nCommon drugs and toxins with their antidotes\nDrug/Toxin | Antidote\nHeparin: Protamine sulfate\nWarfarin: Vitamin K (phytonadione)\nBenzodiazepines: Flumazenil (Romazicon)\nOpioids: Naloxone (Narcan)\nAcetaminophen (Tylenol): Acetylcysteine (Mucomyst)\nDigoxin: Digoxin immune Fab (Digibind)\nMagnesium sulfate: Calcium gluconate\nMethotrexate: Leucovorin (folinic acid)\nLead poisoning: EDTA, succimer, dimercaprol\nOrganophosphates: Atropine + pralidoxime\n\n5 Pharmacology Study Strategies That Actually Work\n\n• Study by drug class, not individual drugs. If you know the class, you know 80% of what the NCLEX tests — mechanism, side effects, and nursing priorities carry across the class.\n• Learn the suffix, learn the class. Use a drug suffixes cheat sheet alongside this guide to identify drug classes instantly.\n• Focus on safety first. The NCLEX is a safety exam. For every drug, ask: When do I hold it? What do I monitor? What do I teach the patient?\n• Use spaced repetition. Study 5–10 drugs per day, then review the previous day's drugs before adding new ones. NCLEX RN Mastery's adaptive algorithm does this for you.\n• Connect drugs to patient scenarios. Don't memorize in isolation — picture a real patient taking the drug and think through the nursing process.\n\nYour Next Step\n\nYou now have the 50 most-tested drugs organized exactly how the NCLEX presents them. But reading a cheat sheet isn't the same as being tested on it.\n\nOpen NCLEX RN Mastery and filter to Pharmacology questions. The adaptive algorithm identifies exactly which drug classes you're weakest in and drills them until you've locked them in. That's how 3.2 million nurses studied — and passed.","og":{"title":"NCLEX Pharmacology Cheat Sheet: 50 Must-Know Drugs by Body System [2026]","description":"Free NCLEX pharmacology cheat sheet covering 50 high-yield drugs organized by body system. Includes mechanisms, nursing considerations, antidotes, and memory tricks for NCLEX-RN and NCLEX-PN.","image":"https://res.cloudinary.com/hlt-media/image/upload/f_auto,q_auto,dpr_auto,c_fill,g_auto,ar_40:21,w_1200/v1781234735/hlt-mmm2/generated/mmm2-flat-vector-editorial-illustration-for-mqad65vx.webp"}}