Top 200 Drugs By Class: A Quick Reference For NCLEX-RN Pharmacology

The 'top 200' drugs are the most-prescribed medications in the US. Nearly every NCLEX pharmacology question involves a drug on this list. Mastery is not about memorizing all 200 in isolation — it is about pattern-matching: knowing the drug class from the generic suffix (e.g., -pril = ACE inhibitor, -olol = beta-blocker, -statin = HMG-CoA reductase inhibitor), recalling the class's signature adverse effect, and applying the standard nursing action. This guide organizes the top 200 by class with the minimum-effective information per drug: generic name, common brand name, class, the ONE adverse effect most-tested, and the priority nursing action. Used as a final-week rapid review, this list complements deeper class-by-class study (see the NCLEX-RN pharmacology complete guide for full mechanisms and the autonomic nervous system drugs cluster for the receptor-based framework).

ACE inhibitors (suffix -pril): lisinopril (Prinivil/Zestril), enalapril (Vasotec), ramipril (Altace), captopril (Capoten), benazepril (Lotensin). Adverse: dry cough, hyperkalemia, angioedema. Nursing: monitor K, baseline BUN/Cr, hold for angioedema. ARBs (suffix -sartan): losartan (Cozaar), valsartan (Diovan), olmesartan (Benicar), candesartan (Atacand), telmisartan (Micardis). Adverse: hyperkalemia. Nursing: monitor K, BUN/Cr; no cough like ACE inhibitors. Beta-blockers (suffix -olol): metoprolol (Lopressor/Toprol-XL), atenolol (Tenormin), propranolol (Inderal), carvedilol (Coreg), nebivolol (Bystolic), bisoprolol (Zebeta). Adverse: bradycardia, masked hypoglycemia, bronchospasm (non-selective). Nursing: hold HR <60, SBP <90, never stop abruptly. Calcium channel blockers: amlodipine (Norvasc), nifedipine (Procardia), diltiazem (Cardizem), verapamil (Calan), nicardipine (Cardene). Adverse: peripheral edema (DHP), constipation (verapamil), bradycardia (non-DHP). Nursing: monitor BP, HR, peripheral edema. Diuretics: furosemide (Lasix), bumetanide (Bumex), hydrochlorothiazide (HCTZ), chlorthalidone (Hygroton), spironolactone (Aldactone), eplerenone (Inspra), torsemide (Demadex). Adverse: hypokalemia (loop, thiazide), hyperkalemia (K-sparing), ototoxicity (loop IV rapid). Nursing: daily weights, I&O, monitor K, BUN/Cr. Statins (suffix -statin): atorvastatin (Lipitor), simvastatin (Zocor), rosuvastatin (Crestor), pravastatin (Pravachol), pitavastatin (Livalo). Adverse: myopathy/rhabdomyolysis (severe muscle pain → CK), hepatotoxicity. Nursing: monitor liver enzymes, report muscle pain. Take simvastatin at bedtime (synthesis peaks at night). Antiarrhythmics: amiodarone (Cordarone/Pacerone), digoxin (Lanoxin), adenosine (Adenocard), lidocaine, flecainide (Tambocor). Amiodarone adverse: pulmonary fibrosis, hepatotoxicity, thyroid dysfunction, corneal microdeposits. Digoxin: narrow therapeutic range 0.5-2.0 ng/mL; toxicity worse with hypokalemia. Nitrates: nitroglycerin sublingual, isosorbide mononitrate (Imdur), isosorbide dinitrate (Isordil). Adverse: headache, hypotension. Nursing: keep in dark glass container, sit/lie when taking, repeat q5 min × 3 if angina, call 911 if pain persists. Antiplatelets: aspirin, clopidogrel (Plavix), prasugrel (Effient), ticagrelor (Brilinta). Adverse: bleeding, GI ulceration. Nursing: hold 5-7 days before surgery, signs of bleeding teaching.

Anticoagulants: heparin (IV/SC), enoxaparin (Lovenox), warfarin (Coumadin/Jantoven), apixaban (Eliquis), rivaroxaban (Xarelto), dabigatran (Pradaxa), edoxaban (Savaysa), fondaparinux (Arixtra). Heparin: monitor aPTT 1.5-2.5× control; antidote protamine; HIT 5-10 days. Enoxaparin: SC, weight-based, no routine monitoring, partial protamine reversal. Warfarin: monitor INR 2-3 (2.5-3.5 for mech valves); antidote vitamin K (slow), PCC/FFP (fast); huge drug-food interactions. DOACs (-xaban, dabigatran): no INR monitoring, fewer interactions, antidotes available (idarucizumab dabigatran, andexanet alfa Xa inhibitors). Insulin: aspart (Novolog) — rapid 15 min onset; lispro (Humalog) — rapid; glulisine (Apidra) — rapid; regular (Humulin R / Novolin R) — short 30 min; NPH (Humulin N / Novolin N) — intermediate; glargine (Lantus/Basaglar/Toujeo) — long 24 hr; detemir (Levemir) — long; degludec (Tresiba) — ultra-long 42 hr. Adverse: hypoglycemia. Nursing: timing matches peak; rotate sites; never massage; cloudy NPH only insulin to mix (NPH + regular). Oral diabetes: metformin (Glucophage), glipizide (Glucotrol), glyburide (DiaBeta), glimepiride (Amaryl), pioglitazone (Actos), sitagliptin (Januvia), linagliptin (Tradjenta), saxagliptin (Onglyza). Metformin: lactic acidosis risk (hold for contrast, renal); GI upset. Sulfonylureas (glipizide, glyburide): hypoglycemia, weight gain. DPP-4 (-gliptin): pancreatitis risk. TZDs (pioglitazone): heart failure, fluid retention, fracture risk. GLP-1 agonists: semaglutide (Ozempic/Wegovy), liraglutide (Victoza/Saxenda), dulaglutide (Trulicity), exenatide (Byetta), tirzepatide (Mounjaro/Zepbound — dual GLP-1/GIP). Adverse: nausea (peak first 4 weeks each titration), pancreatitis, MTC warning. Nursing: weekly SC injection (most), site rotation, gradual titration to limit nausea. SGLT2 inhibitors (suffix -gliflozin): empagliflozin (Jardiance), dapagliflozin (Farxiga), canagliflozin (Invokana), ertugliflozin (Steglatro). Adverse: UTI, genital fungal, euglycemic DKA (rare), volume depletion. Nursing: monitor renal function, hydration, signs of DKA even with normal blood sugar.

Penicillins: amoxicillin (Amoxil), amoxicillin-clavulanate (Augmentin), penicillin G, ampicillin-sulbactam (Unasyn), piperacillin-tazobactam (Zosyn). Adverse: allergy (most common), C. diff. Nursing: penicillin allergy history, take with water (some on empty stomach). Cephalosporins: cefazolin (Ancef/Kefzol) — 1st gen; cefuroxime (Ceftin) — 2nd; ceftriaxone (Rocephin) — 3rd; cefepime (Maxipime) — 4th; ceftaroline (Teflaro) — 5th MRSA. Adverse: allergy (~1% cross-react with penicillin), C. diff, disulfiram-like reaction (cefotetan, ceftriaxone with alcohol). Nursing: penicillin allergy ask, avoid alcohol. Macrolides (suffix -mycin macrolides): azithromycin (Zithromax/Z-Pak), erythromycin, clarithromycin (Biaxin). Adverse: QT prolongation, GI upset (erythromycin severe), hepatotoxicity. Nursing: ECG if QT-prolonging combo, take with water. Fluoroquinolones (suffix -floxacin): ciprofloxacin (Cipro), levofloxacin (Levaquin), moxifloxacin (Avelox), ofloxacin. Adverse: tendon rupture (Achilles, especially elderly + corticosteroids), QT prolongation, photosensitivity, peripheral neuropathy. Avoid pregnancy/peds. Nursing: report tendon pain, sun protection. Aminoglycosides (suffix -mycin aminoglycosides): gentamicin, tobramycin, amikacin, streptomycin. Adverse: ototoxicity (irreversible — heavily tested), nephrotoxicity. Nursing: monitor trough levels, renal function, audiology baseline. Tetracyclines: doxycycline (Vibramycin), tetracycline, minocycline. Adverse: photosensitivity, tooth discoloration (peds), GI upset. Avoid in pregnancy/peds <8 yr. Take with water; avoid dairy/antacids (chelate calcium → decreased absorption). Sulfonamides: trimethoprim-sulfamethoxazole/TMP-SMX (Bactrim/Septra). Adverse: rash (Stevens-Johnson rare), photosensitivity, hyperkalemia (esp. in elderly with ACE inhibitor). Nursing: hydration, sun protection, monitor K+. MRSA agents: vancomycin (IV), linezolid (Zyvox), daptomycin (Cubicin), tigecycline (Tygacil). Vancomycin: red man syndrome (slow infusion, NOT allergy), nephrotoxicity, trough monitoring. Linezolid: thrombocytopenia, serotonin syndrome with SSRIs. Antifungals: fluconazole (Diflucan), voriconazole (VFEND), nystatin (Mycostatin), amphotericin B, terbinafine (Lamisil). Adverse: hepatotoxicity (azoles), nephrotoxicity (amphotericin B — 'amphoterrible'). Nursing: monitor LFTs, renal function. Antivirals: acyclovir (Zovirax), valacyclovir (Valtrex), oseltamivir (Tamiflu), oseltamivir, ganciclovir (Cytovene), tenofovir (Viread). Adverse: renal toxicity (acyclovir IV), GI upset.

SSRIs: fluoxetine (Prozac), sertraline (Zoloft), citalopram (Celexa), escitalopram (Lexapro), paroxetine (Paxil), fluvoxamine (Luvox). Adverse: GI, sexual dysfunction, suicidal ideation in young adults (boxed). Onset 4-6 weeks. Discontinue gradually. SNRIs: venlafaxine (Effexor), duloxetine (Cymbalta), desvenlafaxine (Pristiq). Adverse: hypertension (venlafaxine — monitor BP), GI, sexual dysfunction. TCAs: amitriptyline (Elavil), nortriptyline (Pamelor), imipramine (Tofranil), desipramine (Norpramin). Adverse: anticholinergic (dry mouth, retention, constipation), cardiac toxicity overdose (sodium channel block), orthostatic hypotension. Avoid in elderly (Beers). MAOIs: phenelzine (Nardil), tranylcypromine (Parnate), selegiline (Emsam). Adverse: hypertensive crisis with tyramine foods (aged cheese, cured meats, wine). 14-day washout when switching antidepressants. Benzodiazepines (suffix -lam, -pam): alprazolam (Xanax), lorazepam (Ativan), diazepam (Valium), clonazepam (Klonopin), midazolam (Versed), temazepam (Restoril). Adverse: respiratory depression (especially with opioids), dependence, withdrawal seizures with abrupt stop. Antidote: flumazenil (rarely used — seizure risk). Sleep aids: zolpidem (Ambien), zaleplon (Sonata), eszopiclone (Lunesta), ramelteon (Rozerem). Adverse: sleep behaviors (driving, eating, walking), next-day drowsiness. Antipsychotics 1st gen: haloperidol (Haldol), chlorpromazine (Thorazine), fluphenazine. Adverse: EPS (acute dystonia, akathisia, parkinsonism, tardive dyskinesia), NMS. 2nd gen: risperidone (Risperdal), olanzapine (Zyprexa), quetiapine (Seroquel), aripiprazole (Abilify), clozapine (Clozaril), ziprasidone (Geodon), lurasidone (Latuda). Adverse: metabolic syndrome, QT prolongation. Clozapine: agranulocytosis (weekly CBC) and seizures. Mood stabilizers: lithium (Eskalith), valproate (Depakote), lamotrigine (Lamictal), carbamazepine (Tegretol). Lithium: narrow range 0.6-1.2 mEq/L; interactions with NSAIDs, ACEis, thiazides. Valproate: hepatotoxicity, pancreatitis, teratogenic. Lamotrigine: Stevens-Johnson syndrome (titrate slowly). Carbamazepine: aplastic anemia, hyponatremia. Opioids: morphine, oxycodone (Oxycontin), hydrocodone (Norco), hydromorphone (Dilaudid), fentanyl (Duragesic), methadone, tramadol (Ultram), buprenorphine (Subutex), codeine. Adverse: respiratory depression (priority), constipation (always combat), nausea, sedation, dependence. Antidote: naloxone. NSAIDs: ibuprofen (Advil/Motrin), naproxen (Aleve), celecoxib (Celebrex), meloxicam (Mobic), ketorolac (Toradol), diclofenac (Voltaren), indomethacin. Adverse: GI ulcer, kidney injury, CV events. Avoid 3rd trimester pregnancy. Acetaminophen (Tylenol). Adverse: hepatotoxicity >4 g/day (3 g if alcohol). Antidote: NAC. Antiepileptics: phenytoin (Dilantin), levetiracetam (Keppra), topiramate (Topamax), gabapentin (Neurontin), pregabalin (Lyrica), oxcarbazepine (Trileptal). Phenytoin: gingival hyperplasia, narrow therapeutic range 10-20 mcg/mL, severe interactions, IV must be slow (cardiac arrhythmias). Topiramate: kidney stones, metabolic acidosis. Gabapentin/pregabalin: sedation, weight gain.

Bronchodilators SABA: albuterol (ProAir/Ventolin/Proventil), levalbuterol (Xopenex). LABA: salmeterol (Serevent), formoterol. Adverse: tremor, tachycardia. Nursing: rescue (SABA), maintenance (LABA + ICS only — never LABA alone), correct inhaler technique. Inhaled corticosteroids: fluticasone (Flovent), budesonide (Pulmicort), beclomethasone (QVAR), mometasone (Asmanex), ciclesonide (Alvesco). Adverse: thrush (rinse mouth after use), dysphonia, growth suppression (peds). Nursing: rinse mouth, daily use even when asymptomatic. Combination inhalers: fluticasone-salmeterol (Advair), budesonide-formoterol (Symbicort), mometasone-formoterol (Dulera), umeclidinium-vilanterol (Anoro), tiotropium (Spiriva). Leukotriene modifiers: montelukast (Singulair). Adverse: neuropsychiatric (boxed warning — mood changes, suicidality). Anticholinergics inhaled: ipratropium (Atrovent), tiotropium (Spiriva). Adverse: dry mouth, urinary retention. Use COPD primarily. Antihistamines: 1st gen: diphenhydramine (Benadryl), hydroxyzine (Vistaril), chlorpheniramine. Adverse: sedation, anticholinergic. 2nd gen: loratadine (Claritin), cetirizine (Zyrtec), fexofenadine (Allegra). Adverse: minimal sedation. GI: PPIs: omeprazole (Prilosec), pantoprazole (Protonix), esomeprazole (Nexium), lansoprazole (Prevacid). Adverse: long-term — C. diff, fractures, B12 deficiency, AKI. H2 blockers: famotidine (Pepcid), ranitidine (withdrawn), nizatidine. Adverse: minimal. Antiemetics: ondansetron (Zofran), promethazine (Phenergan), prochlorperazine (Compazine), metoclopramide (Reglan). Ondansetron: QT prolongation, headache, constipation. Promethazine: severe tissue necrosis with extravasation — IM/IV cautious; sedation. Metoclopramide: tardive dyskinesia, EPS. Laxatives: docusate (Colace) — softener; senna (Senokot), bisacodyl (Dulcolax) — stimulant; polyethylene glycol (Miralax) — osmotic; lactulose — osmotic + ammonia. Lactulose used in hepatic encephalopathy. Antidiarrheals: loperamide (Imodium), diphenoxylate-atropine (Lomotil). Avoid in C. diff suspected, IBD flare. Thyroid: levothyroxine (Synthroid/Levoxyl) — hypothyroidism. Adverse: hyperthyroid symptoms if too much. Nursing: same time daily, empty stomach, separated from calcium/iron/coffee by 4 hr. Methimazole (Tapazole), propylthiouracil/PTU — hyperthyroidism. PTU in pregnancy 1st trimester. Glucocorticoids: prednisone, methylprednisolone (Medrol), dexamethasone, hydrocortisone. Adverse: hyperglycemia, immunosuppression, osteoporosis, mood, adrenal suppression. Taper after >2 weeks use. Bisphosphonates (suffix -dronate): alendronate (Fosamax), risedronate (Actonel), zoledronate (Reclast), ibandronate (Boniva). Adverse: esophagitis, osteonecrosis of jaw, atypical femoral fractures. Nursing: take with full glass water, remain upright 30+ minutes, do not take other meds simultaneously. Miscellaneous: allopurinol (gout — Stevens-Johnson), colchicine (gout — diarrhea), sildenafil (Viagra — nitrate interaction = severe hypotension), tamsulosin (Flomax — orthostatic, intraoperative floppy iris), finasteride (Proscar/Propecia — teratogenic, sexual side effects).

Generic name suffixes for rapid class identification: | Suffix | Class | |---|---| | -pril | ACE inhibitor | | -sartan | Angiotensin receptor blocker (ARB) | | -olol | Beta-blocker | | -dipine | Dihydropyridine calcium channel blocker | | -statin | HMG-CoA reductase inhibitor (statin) | | -azepam, -azolam | Benzodiazepine | | -barbital | Barbiturate | | -caine | Local anesthetic | | -mycin (with -gly-) | Aminoglycoside | | -mycin (others) | Macrolide (azithromycin, erythromycin) or other | | -floxacin | Fluoroquinolone | | -cycline | Tetracycline | | -cillin | Penicillin | | -cef-, ceph- | Cephalosporin | | -conazole | Antifungal | | -prazole | Proton pump inhibitor (PPI) | | -tidine | H2 blocker | | -triptan | Serotonin agonist for migraine | | -gliptin | DPP-4 inhibitor | | -gliflozin | SGLT2 inhibitor | | -tide | Peptide (GLP-1 agonist, etc.) | | -dronate | Bisphosphonate | | -setron | 5-HT3 antagonist antiemetic | | -prost | Prostaglandin | | -vir | Antiviral | These suffixes are 90%+ reliable. Some legacy drugs do not follow the pattern (e.g., heparin, warfarin, digoxin, lithium, metformin). For unfamiliar drugs, suffix recognition + therapy class question usually identifies the class within seconds. The quick reference for adverse-effect-priority by class (memorize the top one): - ACE inhibitor → hyperkalemia - ARB → hyperkalemia - Beta-blocker → bradycardia + masked hypoglycemia - Thiazide → hypokalemia + hyperuricemia - Loop diuretic → hypokalemia + ototoxicity - Statin → rhabdomyolysis (muscle pain) - Warfarin → bleeding (INR-guided) - Heparin → HIT and bleeding - Insulin → hypoglycemia - Metformin → lactic acidosis (with renal/contrast) - Sulfonylurea → hypoglycemia - GLP-1 → nausea, pancreatitis - Aminoglycoside → ototoxicity + nephrotoxicity - Fluoroquinolone → tendon rupture - Vancomycin → red man syndrome (rate-related) - Lithium → narrow range, neurotoxicity - Antipsychotic → EPS, NMS - Opioid → respiratory depression - Acetaminophen → hepatotoxicity (>4 g) - NSAID → GI bleed, kidney - Phenytoin → gingival hyperplasia, narrow range - Bisphosphonate → esophagitis (sit upright 30 min)

The top-200 drug list is overwhelming in isolation but manageable when organized by class with suffix pattern-matching. Snap a photo of any drug name (brand or generic) on a med list, pillbox, or NCLEX question stem and NurseIQ identifies the class via suffix or database lookup, recalls the priority adverse effect, and applies the priority nursing action to the patient scenario. For medication reconciliation practice and pharmacology review, NurseIQ generates randomized 20-question quick-fire reviews drawing from the top-200 list. This content is for educational purposes only and supports nursing student learning.