NEET PG Pharmacology Questions 2026: Important MCQs with Answers

Importance of NEET PG Pharmacology Questions

NEET PG Pharmacology questions rarely appear as simple questions like "What does this drug do" anymore. It's usually mixed with a short clinical scenario. For example, a patient on a certain drug develops a certain symptom, and you have to work backwards to the mechanism. That format rewards understanding over memorising, which is honestly good news if you build your prep around reasoning instead of rote recall.

Solving questions is what builds that reasoning muscle. A concept you have only read about feels familiar in the textbook and then goes blank when you see it as a case scenario on exam day.

NEET PG Pharmacology High-Yield Topics

A few areas appear repeatedly in NEET PG Pharmacology. If your time is short, start here:

• Autonomic and cardiovascular pharmacology

• CNS drugs, including anticonvulsants and psychiatric medications

• Antimicrobials and antifungals

• Endocrine and metabolic drugs

• Drug toxicity, antidotes, and adverse reactions

NEET PG Pharmacology Questions 2026 with Answers

Cardiovascular Pharmacology

Q1. What is the mechanism of action of digoxin?

A) Beta-1 receptor blockade

B) Inhibition of Na+/K+ ATPase

C) Calcium channel blockade

D) Inhibition of angiotensin-converting enzyme

Answer: B) Inhibition of Na+/K+ ATPase.

Explanation: Digoxin blocks this pump in cardiac cells, raising intracellular sodium and, indirectly, intracellular calcium, which increases the force of cardiac contraction.

Q2. Long-term use of which antiarrhythmic drug is most notably linked to pulmonary fibrosis?

A) Amiodarone

B) Lidocaine

C) Verapamil

D) Propranolol

Answer: A) Amiodarone.

Explanation: Pulmonary toxicity is one of the most serious long-term risks of amiodarone, alongside thyroid and hepatic effects, so lung function is monitored during prolonged use.

Q3. What is the drug of choice for a hypertensive emergency requiring immediate blood pressure control?

A) Oral amlodipine

B) Sodium nitroprusside

C) Oral ACE inhibitor

D) Hydrochlorothiazide

Answer: B) Sodium nitroprusside.

Explanation: It's given as an IV infusion and acts within seconds, which is exactly what a true hypertensive emergency calls for. Oral drugs simply act too slowly.

Q4. What is the treatment of choice for Torsades de Pointes?

A) IV Lidocaine

B) IV Magnesium sulfate

C) IV Amiodarone

D) IV Adenosine

Answer: B) IV Magnesium sulfate.

Explanation: Magnesium stabilises the cardiac membrane and is effective even when serum magnesium levels are technically normal.

Q5. Which diuretic carries the highest recognised risk of ototoxicity?

A) Hydrochlorothiazide

B) Spironolactone

C) Furosemide

D) Acetazolamide

Answer: C) Furosemide.

Explanation: As a loop diuretic, furosemide can affect the inner ear at high doses or with rapid IV administration, and this risk rises further when it's combined with aminoglycosides.

CNS and Psychiatric Pharmacology

Q6. Which mood stabiliser is considered first-line for long-term management of bipolar disorder?

A) Lithium

B) Sodium valproate

C) Olanzapine

D) Fluoxetine

Answer: A) Lithium.

Explanation: Despite its narrow therapeutic index, lithium remains the reference standard mood stabiliser and has the strongest evidence for preventing relapse.

Q7. Which antipsychotic carries a well-known risk of agranulocytosis, requiring regular blood monitoring?

A) Haloperidol

B) Clozapine

C) Risperidone

D) Aripiprazole

Answer: B) Clozapine.

Explanation: The agranulocytosis risk is why clozapine is reserved for treatment-resistant schizophrenia and requires mandatory regular white cell count monitoring.

Q8. Which anticonvulsant is generally preferred over sodium valproate during pregnancy?

A) Levetiracetam

B) Phenytoin

C) Sodium valproate itself

D) Phenobarbitone

Answer: A) Levetiracetam.

Explanation: It carries a lower teratogenic risk than valproate, which is strongly linked to neural tube defects and is best avoided in women of childbearing age wherever possible.

Q9. Which anticonvulsant is well known for causing Stevens-Johnson syndrome, particularly with rapid dose escalation?

A) Levetiracetam

B) Lamotrigine

C) Gabapentin

D) Sodium valproate

Answer: B) Lamotrigine.

Explanation: The risk is why lamotrigine is always started at a low dose and titrated up slowly, rather than initiated at a therapeutic dose.

Antimicrobials and Antifungals

Q10. Which antifungal drug is most associated with significant hepatotoxicity, limiting its long-term use?

A) Fluconazole

B) Ketoconazole

C) Terbinafine

D) Griseofulvin

Answer: B) Ketoconazole.

Explanation: Its hepatotoxic potential is severe enough that oral ketoconazole has largely been replaced by safer alternatives for systemic fungal infections.

Q11. Which anticonvulsant, when used alongside other drugs, is a recognised cause of SIADH and resulting hyponatremia?

A) Phenytoin

B) Carbamazepine

C) Ethosuximide

D) Gabapentin

Answer: B) Carbamazepine.

Explanation: It enhances the effect of antidiuretic hormone, and hyponatremia is one of the more commonly tested adverse effects associated with it.

Q12. What is the antidote used to rescue normal cells from methotrexate toxicity?

A) Folic acid

B) Leucovorin (folinic acid)

C) Vitamin B12

D) N-acetylcysteine

Answer: B) Leucovorin (folinic acid).

Explanation: Because methotrexate blocks the enzyme that activates folic acid, leucovorin bypasses that block directly, which is why plain folic acid won't do the job here.

Endocrine and Miscellaneous Pharmacology

Q13. What is the cellular mechanism by which insulin lowers blood glucose?

A) Direct inhibition of glucagon secretion only

B) Binding to a tyrosine kinase receptor, triggering GLUT4 translocation

C) Inhibition of glucose absorption in the gut

D) Stimulation of renal glucose excretion

Answer: B) Binding to a tyrosine kinase receptor, triggering GLUT4 translocation.

Explanation: This receptor-mediated signalling moves glucose transporters to the cell surface, allowing glucose to enter muscle and fat cells.

Q14. What is the first-line drug class for managing symptoms of benign prostatic hyperplasia?

A) 5-alpha reductase inhibitors

B) Alpha-1 blockers (e.g., tamsulosin)

C) Anticholinergics

D) Beta-3 agonists

Answer: B) Alpha-1 blockers (e.g., tamsulosin).

Explanation: These relax smooth muscle in the prostate and bladder neck, giving faster symptom relief than 5-alpha reductase inhibitors, which work by shrinking the gland over months.

Q15. What is the mechanism of action of sildenafil in erectile dysfunction?

A) Direct smooth muscle relaxation

B) PDE5 inhibition, increasing cGMP levels

C) Testosterone receptor agonism

D) Alpha-blockade in penile tissue

Answer: B) PDE5 inhibition, increasing cGMP levels.

Explanation: By blocking the breakdown of cGMP, sildenafil prolongs smooth muscle relaxation and blood flow in response to sexual stimulation.

Q16. What is the mechanism of action of aspirin as an antiplatelet agent?

A) Reversible COX1 inhibition

B) Irreversible COX1 inhibition

C) ADP receptor blockade

D) Glycoprotein IIb/IIIa inhibition

Answer: B) Irreversible COX1 inhibition.

Explanation: Because platelets can't synthesise new enzyme, aspirin's antiplatelet effect lasts for the entire lifespan of the platelet, roughly seven to ten days.

Q17. Which drug is preferred as first-line treatment for an acute gout attack in a patient who cannot tolerate NSAIDs?

A) Allopurinol

B) Colchicine

C) Febuxostat

D) Probenecid

Answer: B) Colchicine.

Explanation: Allopurinol and febuxostat lower long-term uric acid levels but are not used to treat an acute attack, and can actually worsen one if started during a flare.

Q18. What is the mechanism of action of methotrexate?

A) Inhibition of thymidylate synthase directly

B) Inhibition of dihydrofolate reductase

C) Inhibition of DNA gyrase

D) Inhibition of ribonucleotide reductase

Answer: B) Inhibition of dihydrofolate reductase.

Explanation: By blocking this enzyme, methotrexate prevents regeneration of active folate, which is needed for DNA synthesis.

Q19. Which class of drugs is most associated with a "first-dose hypotension" effect, requiring a low starting dose?

A) Beta blockers

B) Alpha-1 blockers

C) Calcium channel blockers

D) ACE inhibitors

Answer: B) Alpha-1 blockers.

Explanation: Drugs like prazosin can cause a sharp drop in blood pressure with the very first dose, which is why treatment typically starts at bedtime with a low dose.

Q20. Which class of antihypertensives is most likely to cause a dry, persistent cough as a side effect?

A) ACE inhibitors

B) ARBs

C) Calcium channel blockers

D) Thiazide diuretics

Answer: A) ACE inhibitors.

Explanation: The cough results from bradykinin accumulation, since ACE also normally breaks down bradykinin, and it's one of the most common reasons patients are switched from an ACE inhibitor to an ARB.

How to Use These NEET PG Pharmacology MCQs

Try answering before you look at the answer key. It's convenient to jump straight to the answer, especially when you are short on time, but that habit quietly weakens recall over weeks of prep.

Pay attention to the "why," not just the "what." A question on ACE inhibitor cough is really testing whether you understand bradykinin metabolism and not to check whether you have memorised a side-effect list. Once you get that link, similar questions stop feeling unfamiliar.

Combine this set with full-length timed practice closer to the exam. NEET PG previous year question papers give you a sense of how Pharmacology questions sit alongside every other subject on the actual paper, and the NEET PG mock test lets you practise under the same 42-minute sectioned format you'll face on exam day.