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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 is a commonly used cough suppressant?

  1. Guaifenesin

  2. Acetylcysteine

  3. Ambroxol

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

Dextromethorphan is a non-opioid cough suppressant that acts by reducing the activity of the cough center in the medulla oblongata.

Multiple choice

What is the mechanism of action of nasal decongestants?

  1. Inhibition of phosphodiesterase

  2. Activation of beta2-adrenergic receptors

  3. Reduction of airway inflammation

  4. Vasoconstriction of nasal blood vessels
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Nasal decongestants work by constricting the blood vessels in the nasal passages, reducing swelling and congestion.

Multiple choice

Which of the following is a commonly used inhaled corticosteroid?

  1. Salmeterol

  2. Ipratropium bromide

  3. Montelukast

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

Fluticasone is a commonly used inhaled corticosteroid used to prevent and treat asthma and COPD.

Multiple choice

What is the mechanism of action of cromolyn sodium?

  1. Inhibition of phosphodiesterase

  2. Activation of beta2-adrenergic receptors

  3. Reduction of airway inflammation

  4. Stabilization of mast cell membranes
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cromolyn sodium works by stabilizing mast cell membranes, preventing the release of inflammatory mediators.

Multiple choice

Which of the following is a commonly used long-acting beta2-agonist?

  1. Salmeterol

  2. Ipratropium bromide

  3. Montelukast

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

Salmeterol is a long-acting beta2-agonist bronchodilator used to prevent and treat bronchospasm in asthma and COPD.

Multiple choice

What is the mechanism of action of nedocromil sodium?

  1. Inhibition of phosphodiesterase

  2. Activation of beta2-adrenergic receptors

  3. Reduction of airway inflammation

  4. Inhibition of mast cell degranulation
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Nedocromil sodium works by inhibiting the degranulation of mast cells, preventing the release of inflammatory mediators.

Multiple choice

Which of the following is a commonly used short-acting beta2-agonist?

  1. Salmeterol

  2. Ipratropium bromide

  3. Albuterol

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

Albuterol is a short-acting beta2-agonist bronchodilator used to relieve bronchospasm in asthma and COPD.

Multiple choice

What is the mechanism of action of montelukast?

  1. Inhibition of phosphodiesterase

  2. Activation of beta2-adrenergic receptors

  3. Reduction of airway inflammation

  4. Antagonism of leukotriene receptors
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Montelukast works by blocking the actions of leukotrienes, which are inflammatory mediators involved in asthma and allergic rhinitis.

Multiple choice

Which of the following is a commonly used inhaled anticholinergic?

  1. Salmeterol

  2. Ipratropium bromide

  3. Montelukast

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

Ipratropium bromide is a short-acting anticholinergic bronchodilator used to relieve bronchospasm in asthma and COPD.

Multiple choice

What information is typically included on a drug label?

  1. Drug name and strength

  2. Dosage and administration instructions

  3. Manufacturer and expiration date

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

Drug labels typically include the drug name and strength, dosage and administration instructions, manufacturer and expiration date, and other relevant information.

Multiple choice

What is the term for the unauthorized use of a prescription drug?

  1. Diversion

  2. Misuse

  3. Abuse

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

Diversion is the unauthorized transfer of a prescription drug from its intended recipient to someone else.

Multiple choice

What is the term for the use of a prescription drug for a purpose other than that for which it was prescribed?

  1. Diversion

  2. Misuse

  3. Abuse

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

Misuse is the use of a prescription drug for a purpose other than that for which it was prescribed.

Multiple choice

Which of the following is NOT a legal requirement for dispensing psychotropic medications?

  1. The pharmacist must verify the patient's prescription.

  2. The pharmacist must counsel the patient about the medication.

  3. The pharmacist must dispense the medication in a timely manner.

  4. The pharmacist must refuse to dispense the medication if they believe it is being misused.
Reveal answer Fill a bubble to check yourself
Correct answer
Explanation

Pharmacists are not legally required to refuse to dispense a medication if they believe it is being misused, but they may do so if they have a good faith belief that the medication is being diverted or abused.

Multiple choice

What is the term for the use of a prescription drug in a way that is harmful to the user?

  1. Diversion

  2. Misuse

  3. Abuse

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

Abuse is the use of a prescription drug in a way that is harmful to the user.

Multiple choice

What is the term for the body's adaptation to the effects of a drug, requiring higher doses to achieve the same effect?

  1. Tolerance

  2. Dependence

  3. Withdrawal

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

Tolerance is the body's adaptation to the effects of a drug, requiring higher doses to achieve the same effect.