Correct Answer: A

Rationale: The correct answer is A: Beclomethasone (QVAR). Beclomethasone is a corticosteroid inhaler used for long-term asthma control by reducing inflammation and preventing asthma symptoms. It is not used for immediate relief. Metoprolol (
B) is a beta-blocker for hypertension, not asthma. Phenytoin (
C) is an antiepileptic drug. Furosemide (
D) is a diuretic for managing fluid retention, not asthma. Beclomethasone is the appropriate choice for long-term asthma prophylaxis due to its anti-inflammatory properties in the airways.

Correct Answer: B

Rationale: The correct answer is B: Treatment of migraines. Sumatriptan (Imitrex) is a medication commonly used to treat migraines by targeting the blood vessels and reducing inflammation associated with migraine headaches.
Choice A is incorrect because sumatriptan is not used to treat opioid use disorder.
Choice C is incorrect because while sumatriptan can provide pain relief, it is primarily used for migraines specifically.
Choice D is incorrect because sumatriptan is not indicated for all the mentioned conditions, only for migraines.

Correct Answer: D

Rationale: The correct answer is D: Expectorant. Guaifenesin is an expectorant that helps loosen and thin mucus in the airways, making it easier to cough up. Decongestants (
A) reduce nasal congestion, mucolytics (
B) help break down mucus, and antitussives (
C) suppress coughing. In summary, guaifenesin is classified as an expectorant because it helps with mucus clearance in allergic rhinitis.

Correct Answer: B

Rationale: The correct answer is B: Codeine (Co-Caf). Codeine is classified as a controlled substance in Schedule V when mixed with other antitussive medications due to its potential for abuse and addiction. Schedule V drugs have a lower potential for abuse compared to other schedules, but still require a prescription. Diphenhydramine (
A) is an antihistamine, not an antitussive. Benzonatate (
C) is a non-controlled antitussive. Guaifenesin (
D) is an expectorant, not an antitussive.
Therefore, Codeine is the correct choice as it is a controlled substance when mixed with other antitussive medications.

Correct Answer: C

Rationale: The correct answer is C: Inhaled, short-acting prevention of asthma episode (exercise-induced). Albuterol is a short-acting beta agonist bronchodilator used to treat bronchospasm caused by asthma, including exercise-induced bronchospasm. It works quickly to dilate the airways, making it easier to breathe during physical activity.

Choices A, B, and D are incorrect because albuterol is not used for long-term control of cough, treatment of nasal congestion, or management of cold symptoms.