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Pharmacology and Therapeutics

1,643 Questions

Engage with critical pharmacology and therapeutics questions covering drug classifications and therapeutic mechanisms. Topics include chemical absorption, medication formulations, and pharmacogenomics. This collection is useful for students preparing for medical entrance, nursing, and science competitive examinations.

Chemical absorption routesDrug formulation typesMedication mechanismsEnzyme inhibitorsPharmacogenomic tests

Pharmacology and Therapeutics Questions

Multiple choice

Which of the following drugs is a potent inducer of cytochrome P450 enzymes?

  1. Phenobarbital

  2. Carbamazepine

  3. Valproate

  4. Lithium
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Phenobarbital is a potent inducer of cytochrome P450 enzymes, which can lead to increased metabolism and decreased effectiveness of other drugs.

Multiple choice

What is the term used to describe the decreased effectiveness of a drug due to the presence of another drug?

  1. Drug-drug interaction

  2. Polypharmacy

  3. Pharmacokinetic interaction

  4. Pharmacodynamic interaction
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A pharmacokinetic interaction occurs when one drug alters the absorption, distribution, metabolism, or excretion of another drug, leading to changes in its concentration and effectiveness.

Multiple choice

Which of the following drugs is known to inhibit cytochrome P450 enzymes, potentially leading to increased drug concentrations and toxicity?

  1. Erythromycin

  2. Rifampin

  3. Fluoxetine

  4. Lamotrigine
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Erythromycin is a potent inhibitor of cytochrome P450 enzymes, which can lead to increased concentrations and toxicity of other drugs metabolized by these enzymes.

Multiple choice

What is the term used to describe the increased effectiveness of a drug due to the presence of another drug?

  1. Drug-drug interaction

  2. Polypharmacy

  3. Pharmacokinetic interaction

  4. Pharmacodynamic interaction
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A pharmacodynamic interaction occurs when one drug alters the response of the body to another drug, leading to changes in its effectiveness.

Multiple choice

What is the term used to describe the use of two or more drugs with different mechanisms of action to achieve a synergistic effect?

  1. Polypharmacy

  2. Combination therapy

  3. Sequential therapy

  4. Augmentation therapy
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Combination therapy involves the use of two or more drugs with different mechanisms of action to achieve a synergistic effect.

Multiple choice

Which of the following drug combinations can lead to increased risk of QT prolongation and torsades de pointes?

  1. Lithium and haloperidol

  2. Quetiapine and risperidone

  3. Olanzapine and clozapine

  4. Aripiprazole and ziprasidone
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The combination of lithium and haloperidol can increase the risk of QT prolongation and torsades de pointes, potentially leading to cardiac arrhythmias.

Multiple choice

What is the term used to describe the use of a drug to reduce or eliminate the adverse effects of another drug?

  1. Polypharmacy

  2. Combination therapy

  3. Sequential therapy

  4. Augmentation therapy
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Augmentation therapy involves the use of a drug to reduce or eliminate the adverse effects of another drug.

Multiple choice

What is the term used to describe the use of a drug to enhance the effectiveness of another drug?

  1. Polypharmacy

  2. Combination therapy

  3. Sequential therapy

  4. Augmentation therapy
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Augmentation therapy involves the use of a drug to enhance the effectiveness of another drug.

Multiple choice

How are nasal polyps treated?

  1. Medications

  2. Surgery

  3. A combination of medications and surgery

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Nasal polyps are treated with a combination of medications and surgery. Medications can help to reduce inflammation and shrink the polyps, while surgery can be used to remove the polyps.

Multiple choice

What is the term for the use of drugs to treat or prevent diseases?

  1. Chemotherapy

  2. Radiation therapy

  3. Surgery

  4. Pharmacotherapy
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Pharmacotherapy involves the administration of drugs to treat or prevent diseases by targeting specific biological processes or pathways.

Multiple choice

Which treatment approach utilizes targeted drugs to inhibit the growth and spread of cancer cells?

  1. Chemotherapy

  2. Radiation therapy

  3. Targeted therapy

  4. Immunotherapy
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Targeted therapy employs drugs that specifically target molecules or proteins involved in cancer cell growth and survival, inhibiting their activity to halt tumor progression.

Multiple choice

Which of the following is NOT a prohibited substance under WADA's anti-doping code?

  1. Anabolic steroids

  2. Erythropoietin (EPO)

  3. Caffeine

  4. Human growth hormone (HGH)
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Caffeine is not prohibited under WADA's anti-doping code, as it does not meet the criteria for a prohibited substance.

Multiple choice

Which of the following supplements is commonly used to improve sleep quality in athletes?

  1. Melatonin

  2. Magnesium

  3. Chamomile

  4. Lavender
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Melatonin is a hormone that helps regulate sleep-wake cycles and may be beneficial for athletes experiencing sleep disturbances.

Multiple choice

Which of the following supplements is commonly used to support joint health in athletes?

  1. Glucosamine

  2. Chondroitin

  3. MSM

  4. Turmeric
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Glucosamine is a naturally occurring compound that may help support joint health and reduce pain in athletes.

Multiple choice

Which of the following is a common immunosuppressive drug used in transplantation immunology?

  1. Cyclosporine

  2. Tacrolimus

  3. Azathioprine

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cyclosporine, Tacrolimus, and Azathioprine are all common immunosuppressive drugs used in transplantation immunology to prevent the rejection of transplanted organs and tissues.