Cardiovascular and Renal Pharmacology
Cardiovascular drugs make up the single largest category tested on nursing and medical board exams. Master these classes with at least one prototype agent per group.
Beta Blockers and ACE Inhibitors
Beta blockers (metoprolol, atenolol, carvedilol) block beta-1 and beta-2 receptors to lower heart rate and blood pressure. Use them for hypertension, coronary artery disease, heart failure, and arrhythmias. Hold if heart rate drops below 60.
ACE inhibitors (lisinopril, enalapril, ramipril) block conversion of angiotensin I to II. They lower blood pressure and reduce proteinuria. Watch for dry cough, hyperkalemia, and angioedema as major side effects.
ARBs (losartan, valsartan) block angiotensin II receptors directly. They offer similar benefits to ACE inhibitors without triggering the characteristic cough.
Calcium Channel Blockers and Diuretics
Calcium channel blockers divide into two types. Dihydropyridines like amlodipine act primarily on blood vessels. Non-DHPs like diltiazem and verapamil also slow the heart rate.
Thiazide diuretics (HCTZ) provide mild diuresis and lower blood pressure by inhibiting the Na/Cl transporter in the distal convoluted tubule. Risk hypokalemia, hyperglycemia, and hyperuricemia with long-term use.
Loop diuretics (furosemide, bumetanide) create potent diuresis by blocking the Na/K/2Cl cotransporter in the thick ascending loop. They waste potassium and carry ototoxicity risk at high doses.
Potassium-sparing diuretics (spironolactone) work as aldosterone antagonists and raise potassium levels. Used in heart failure and cirrhosis. Gynecomastia is a notable side effect.
Lipid Management and Antiplatelet Agents
Statins (atorvastatin, rosuvastatin) inhibit HMG-CoA reductase to lower LDL cholesterol. Monitor for myalgia, rhabdomyolysis, and elevated liver function tests.
Antiplatelets (aspirin, clopidogrel) reduce platelet aggregation for stroke and MI prevention. Bleeding risk increases with long-term use.
Anticoagulants include three categories. Heparin uses aPTT monitoring, warfarin uses INR monitoring, and DOACs (apixaban, rivaroxaban) require no routine lab monitoring.
Symptom Relief and Arrhythmia Management
Nitrates (nitroglycerin) act as vasodilators for angina relief. Sublingual doses repeat every 5 minutes, maximum three doses. Avoid combined use with PDE-5 inhibitors (sildenafil, tadalafil).
Digoxin acts as a positive inotrope and AV node blocker. It has a narrow therapeutic window of 0.5 to 2.0 ng/mL. Hypokalemia worsens toxicity significantly.
Antiarrhythmics like amiodarone represent Class III agents. Serious side effects include pulmonary fibrosis, thyroid dysfunction, corneal deposits, and hepatotoxicity.
Blood Pressure and Perfusion Management
Alpha blockers (tamsulosin) relax smooth muscle in the prostate and bladder neck for benign prostatic hyperplasia. First-dose orthostatic hypotension is common.
Central-acting antihypertensives (clonidine) are alpha-2 agonists that lower sympathetic outflow. Abrupt withdrawal causes rebound hypertension.
Vasopressors (norepinephrine, epinephrine) raise blood pressure in shock states. They require central line administration. Target a mean arterial pressure of at least 65 mmHg.
| Term | Meaning |
|---|---|
| Beta blockers (metoprolol, atenolol, carvedilol) | Block beta-1 (and sometimes beta-2) receptors to lower HR and BP. Used in HTN, CAD, HF, arrhythmias. Hold for HR <60. |
| ACE inhibitors (lisinopril, enalapril, ramipril) | Block conversion of angiotensin I to II. Lower BP, reduce proteinuria. Side effects: dry cough, hyperkalemia, angioedema. |
| ARBs (losartan, valsartan) | Block angiotensin II receptors. Similar indications to ACE inhibitors but without the cough. |
| Calcium channel blockers (amlodipine, diltiazem, verapamil) | Dihydropyridines (amlodipine) act on vessels; non-DHPs (diltiazem, verapamil) also slow the heart. |
| Thiazide diuretics (HCTZ) | Mild diuretic and antihypertensive. Inhibits Na/Cl transporter in DCT. Risk of hypokalemia, hyperglycemia, hyperuricemia. |
| Loop diuretics (furosemide, bumetanide) | Potent diuresis by inhibiting Na/K/2Cl in thick ascending loop. Wastes potassium. Watch for ototoxicity. |
| Potassium-sparing diuretics (spironolactone) | Aldosterone antagonist. Raises K+. Used in HF and cirrhosis. Can cause gynecomastia. |
| Statins (atorvastatin, rosuvastatin) | Inhibit HMG-CoA reductase to lower LDL. Side effects: myalgia, rhabdomyolysis, elevated LFTs. |
| Antiplatelets (aspirin, clopidogrel) | Reduce platelet aggregation. Used for stroke and MI prevention. Bleeding risk. |
| Anticoagulants (heparin, warfarin, DOACs) | Heparin monitored with aPTT, warfarin with INR; DOACs (apixaban, rivaroxaban) need no routine monitoring. |
| Nitrates (nitroglycerin) | Vasodilators used for angina. Sublingual doses may be repeated every 5 minutes × 3. Avoid with PDE-5 inhibitors. |
| Digoxin | Positive inotrope and AV node blocker. Narrow therapeutic window (0.5-2.0 ng/mL). Toxicity worsened by hypokalemia. |
| Antiarrhythmics (amiodarone) | Class III antiarrhythmic. Side effects: pulmonary fibrosis, thyroid dysfunction, corneal deposits, hepatotoxicity. |
| Alpha blockers (tamsulosin) | Relax smooth muscle in prostate and bladder neck. Used for BPH. First-dose orthostatic hypotension. |
| Central-acting antihypertensives (clonidine) | Alpha-2 agonists that lower sympathetic outflow. Rebound HTN with abrupt withdrawal. |
| Vasopressors (norepinephrine, epinephrine) | Used in shock to raise BP. Require central line administration. Monitor MAP goal ≥65 mmHg. |
Anti-infective, Endocrine, and GI Pharmacology
These three systems carry the second-highest exam weight after cardiovascular drugs. Know mechanism, spectrum, and notable toxicities for each class.
Beta-Lactams and Macrolides
Penicillins (amoxicillin, piperacillin) are beta-lactams that inhibit bacterial cell wall synthesis. Watch for allergy and cross-reactivity with cephalosporins.
Cephalosporins (cefazolin, ceftriaxone, cefepime) organize into five generations. Later generations provide broader gram-negative coverage.
Macrolides (azithromycin, clarithromycin) inhibit the 50S ribosomal subunit. They prolong QT interval and treat atypical pneumonia.
Fluoroquinolones and Aminoglycosides
Fluoroquinolones (ciprofloxacin, levofloxacin) inhibit DNA gyrase. FDA boxed warnings address tendon rupture, QT prolongation, and aortic dissection.
Aminoglycosides (gentamicin, tobramycin) inhibit the 30S ribosomal subunit. They are nephrotoxic and ototoxic, requiring trough and peak monitoring.
Vancomycin treats MRSA and serious gram-positive infections. Red man syndrome occurs with rapid infusion. Monitor trough levels closely.
Antifungals and Antivirals
Antifungals include fluconazole for Candida infections and amphotericin B for serious fungal disease. Amphotericin causes significant nephrotoxicity.
Antivirals include oseltamivir for influenza and acyclovir for HSV and VZV. Always adjust doses for renal function.
Diabetes Management
Insulin divides into four categories by duration. Rapid (lispro, aspart), short (regular), intermediate (NPH), and long-acting (glargine, detemir) all require close glucose monitoring.
Metformin is first-line for type 2 diabetes. It decreases hepatic gluconeogenesis. Hold around iodinated contrast procedures.
Sulfonylureas (glipizide, glyburide) stimulate insulin secretion. Risk of hypoglycemia increases, especially in elderly patients.
GLP-1 agonists (semaglutide, liraglutide) enhance insulin secretion and slow gastric emptying. Weight loss is a major benefit. Nausea is common initially.
Thyroid and Inflammation Management
Levothyroxine replaces thyroid hormone. Take on an empty stomach. Overdose signs include tachycardia, tremors, and weight loss.
Corticosteroids (prednisone, hydrocortisone) suppress inflammation and immunity. Taper slowly to avoid adrenal insufficiency. Cause hyperglycemia, osteoporosis, and mood changes.
Acid Reflux Control
PPIs (omeprazole, pantoprazole) inhibit the H+/K+ ATPase in gastric parietal cells. Long-term use links to C. difficile, fractures, and B12 deficiency.
H2 blockers (famotidine) block histamine-2 receptors on parietal cells. They are less potent than PPIs but have faster onset.
| Term | Meaning |
|---|---|
| Penicillins (amoxicillin, piperacillin) | Beta-lactams that inhibit cell wall synthesis. Watch for allergy (cross-reactivity with cephalosporins). |
| Cephalosporins (cefazolin, ceftriaxone, cefepime) | Beta-lactams organized into five generations. Broader gram-negative coverage with later generations. |
| Macrolides (azithromycin, clarithromycin) | Inhibit 50S ribosomal subunit. Prolong QT interval. Used in atypical pneumonia. |
| Fluoroquinolones (ciprofloxacin, levofloxacin) | Inhibit DNA gyrase. Boxed warnings for tendon rupture, QT prolongation, and aortic dissection. |
| Aminoglycosides (gentamicin, tobramycin) | Inhibit 30S ribosomal subunit. Nephrotoxic and ototoxic. Trough and peak monitoring required. |
| Vancomycin | Glycopeptide for MRSA and serious gram-positive infections. Red man syndrome with rapid infusion. Monitor troughs. |
| Antifungals (fluconazole, amphotericin B) | Fluconazole for Candida; amphotericin 'shake and bake' with significant nephrotoxicity. |
| Antivirals (oseltamivir, acyclovir) | Oseltamivir for influenza; acyclovir for HSV and VZV. Adjust dose for renal function. |
| Insulin | Rapid (lispro, aspart), short (regular), intermediate (NPH), long (glargine, detemir). Monitor glucose closely. |
| Metformin | First-line type 2 diabetes. Decreases hepatic gluconeogenesis. Hold around iodinated contrast. |
| Sulfonylureas (glipizide, glyburide) | Stimulate insulin secretion. Risk of hypoglycemia, especially in elderly. |
| GLP-1 agonists (semaglutide, liraglutide) | Enhance insulin secretion, slow gastric emptying. Weight loss benefit. Nausea is common. |
| Levothyroxine | Thyroid replacement. Take on empty stomach. Signs of overdose: tachycardia, tremors, weight loss. |
| Corticosteroids (prednisone, hydrocortisone) | Suppress inflammation and immunity. Taper slowly. Cause hyperglycemia, osteoporosis, mood changes. |
| PPIs (omeprazole, pantoprazole) | Inhibit H+/K+ ATPase in gastric parietal cells. Long-term use linked to C. diff, fractures, B12 deficiency. |
| H2 blockers (famotidine) | Block histamine-2 receptors on parietal cells. Less potent than PPIs but faster onset. |
CNS, Analgesic, and Psychiatric Pharmacology
These drug classes appear on every board exam and every inpatient floor. Know mechanisms, major adverse effects, and key patient-education points.
Pain Management
Opioids (morphine, hydromorphone, fentanyl) are mu-opioid receptor agonists. Major side effects include respiratory depression, constipation, and sedation. Reverse overdose with naloxone.
NSAIDs (ibuprofen, naproxen, ketorolac) inhibit COX-1 and COX-2 enzymes. Risks include GI bleeding, renal injury, and cardiovascular events with chronic use.
Acetaminophen works as a non-opioid analgesic and antipyretic. It causes hepatotoxicity in overdose. Maximum daily dose is 4 grams. Treat overdose with N-acetylcysteine.
Anxiety and Seizure Management
Benzodiazepines (lorazepam, diazepam, midazolam) enhance GABA signaling. Use for anxiety, seizures, and alcohol withdrawal. Respiratory depression is a serious risk. Reverse with flumazenil.
Depression and Anxiety Treatment
SSRIs (sertraline, fluoxetine, escitalopram) are first-line for depression and anxiety. Full effects take 4 to 6 weeks. Watch for serotonin syndrome risk.
SNRIs (duloxetine, venlafaxine) inhibit serotonin and norepinephrine reuptake. Use for depression and neuropathic pain.
Tricyclic antidepressants (amitriptyline) are older agents with anticholinergic effects, orthostatic hypotension, and cardiotoxicity in overdose.
MAOIs (phenelzine) are rarely used today. Hypertensive crisis occurs with tyramine-rich foods. Multiple drug interactions exist.
Psychosis Management
First-generation antipsychotics (haloperidol) are D2 antagonists. Risks include extrapyramidal symptoms, neuroleptic malignant syndrome, and tardive dyskinesia.
Second-generation antipsychotics (risperidone, olanzapine, quetiapine) have broader receptor profiles. Metabolic syndrome develops (weight gain, diabetes, dyslipidemia).
Mood Stabilization
Lithium has a narrow therapeutic index of 0.6 to 1.2 mEq/L. Monitor thyroid and renal function regularly. Toxicity causes tremor, ataxia, and seizures.
Valproate treats bipolar disorder and epilepsy. It is hepatotoxic and teratogenic. Monitor liver function tests and complete blood count.
Seizure Control
Antiepileptics include phenytoin (10 to 20 mcg/mL therapeutic range), levetiracetam (generally well tolerated), and carbamazepine (causes SIADH).
ADHD and Muscle Relaxation
Stimulants (methylphenidate, amphetamine salts) are first-line for ADHD. Watch for appetite loss, insomnia, and cardiac effects.
Muscle relaxants (cyclobenzaprine, baclofen) treat muscle spasm and spasticity. Sedation and anticholinergic effects are common.
Local Anesthesia
Local anesthetics (lidocaine) block voltage-gated sodium channels. Systemic toxicity causes perioral tingling, seizures, and arrhythmias.
| Term | Meaning |
|---|---|
| Opioids (morphine, hydromorphone, fentanyl) | Mu-opioid receptor agonists. Respiratory depression, constipation, sedation. Reverse with naloxone. |
| NSAIDs (ibuprofen, naproxen, ketorolac) | Inhibit COX-1 and COX-2. GI bleeding, renal injury, cardiovascular risk with chronic use. |
| Acetaminophen | Non-opioid analgesic/antipyretic. Hepatotoxic in overdose. Max 4 g/day. Treat overdose with N-acetylcysteine. |
| Benzodiazepines (lorazepam, diazepam, midazolam) | Enhance GABA. Anxiety, seizures, alcohol withdrawal. Respiratory depression. Reverse with flumazenil. |
| SSRIs (sertraline, fluoxetine, escitalopram) | First-line for depression and anxiety. 4-6 weeks for full effect. Risk of serotonin syndrome. |
| SNRIs (duloxetine, venlafaxine) | Inhibit serotonin and norepinephrine reuptake. Used for depression, neuropathic pain. |
| Tricyclic antidepressants (amitriptyline) | Older agents. Anticholinergic effects, orthostatic hypotension, cardiotoxicity in overdose. |
| MAOIs (phenelzine) | Rarely used. Hypertensive crisis with tyramine-rich foods. Many drug interactions. |
| Antipsychotics, first generation (haloperidol) | D2 antagonists. Extrapyramidal symptoms, neuroleptic malignant syndrome, tardive dyskinesia. |
| Antipsychotics, second generation (risperidone, olanzapine, quetiapine) | Broader receptor profile. Metabolic syndrome (weight gain, diabetes, dyslipidemia). |
| Mood stabilizers, lithium | Narrow therapeutic index (0.6-1.2 mEq/L). Monitor thyroid and renal function. Toxicity: tremor, ataxia, seizures. |
| Mood stabilizers, valproate | Used for bipolar and epilepsy. Hepatotoxic and teratogenic. Monitor LFTs and CBC. |
| Antiepileptics (phenytoin, levetiracetam, carbamazepine) | Phenytoin narrow therapeutic range (10-20 mcg/mL); levetiracetam generally well tolerated; carbamazepine causes SIADH. |
| Stimulants (methylphenidate, amphetamine salts) | First-line ADHD. Watch for appetite loss, insomnia, cardiac effects. |
| Muscle relaxants (cyclobenzaprine, baclofen) | Used for muscle spasm and spasticity. Sedation and anticholinergic effects common. |
| Local anesthetics (lidocaine) | Block voltage-gated sodium channels. Systemic toxicity: perioral tingling, seizures, arrhythmias. |
How to Study pharmacology Effectively
Mastering pharmacology requires the right study approach, not just more hours. Research in cognitive science shows three techniques produce the best outcomes.
Three Research-Backed Study Techniques
Active recall tests yourself rather than re-reading notes. Spaced repetition reviews material at scientifically-optimized intervals. Interleaving mixes related topics instead of studying one in isolation.
FluentFlash builds on all three techniques. When you study with our FSRS algorithm, every term schedules for review at exactly the moment before you forget it. This maximizes retention while minimizing study time.
Why Passive Review Fails
The most common mistake is relying on passive methods. Re-reading notes, highlighting textbook passages, and watching lectures feel productive. Research shows these produce only 10 to 20 percent of the retention that active recall achieves. Flashcards force your brain to retrieve information, strengthening memory pathways far more than recognition alone.
Pair flashcard practice with spaced repetition scheduling, and you learn in 20 minutes daily what takes hours of passive review.
A Practical Study Plan
Start by creating 15 to 25 flashcards covering the highest-priority concepts. Review them daily for the first week using our FSRS scheduling. As cards become easier, intervals automatically expand from minutes to days to weeks. You always work on material at the edge of your knowledge.
After 2 to 3 weeks of consistent practice, pharmacology concepts become automatic rather than effortful to recall.
Daily Study Steps
- Generate flashcards using FluentFlash AI or create them manually from your notes
- Study 15 to 20 new cards per day, plus scheduled reviews
- Use multiple study modes (flip, multiple choice, written) to strengthen recall
- Track your progress and identify weak topics for focused review
- Review consistently; daily practice beats marathon sessions
- 1
Generate flashcards using FluentFlash AI or create them manually from your notes
- 2
Study 15-20 new cards per day, plus scheduled reviews
- 3
Use multiple study modes (flip, multiple choice, written) to strengthen recall
- 4
Track your progress and identify weak topics for focused review
- 5
Review consistently, daily practice beats marathon sessions
Why Flashcards Work Better Than Other Study Methods for pharmacology
Flashcards are one of the most research-backed study tools for any subject, including pharmacology. The reason comes down to how memory works.
How Memory Transfer Works
When you read a textbook passage, your brain stores information in short-term memory. Without retrieval practice, it fades within hours. Flashcards force retrieval, which is the mechanism that transfers information from short-term to long-term memory.
The Testing Effect
The testing effect, documented in hundreds of peer-reviewed studies, shows that flashcard students outperform re-readers by 30 to 60 percent on delayed tests. Flashcards don't contain more information. Retrieval strengthens neural pathways in ways passive exposure cannot. Every successful recall of a pharmacology concept makes that concept easier to recall next time.
FSRS Optimization
FluentFlash amplifies this with the FSRS algorithm, a modern spaced repetition system. It schedules reviews at mathematically-optimal intervals based on your actual performance. Cards you find easy get pushed further ahead. Cards you struggle with come back sooner.
Over time, this builds remarkable retention with minimal time investment. Students using FSRS-based systems typically retain 85 to 95 percent of material after 30 days. Passive review alone produces roughly 20 percent retention.