Which of the following antibiotics is considered the drug of choice for methicillin-resistant Staphylococcus aureus (MRSA)?

Beta-blockers primarily act by which of the following mechanisms?

Which drug is commonly used to reverse opioid overdose by acting as an opioid receptor antagonist?

Which class of drugs is most commonly associated with the side effect of a persistent dry cough?

Which of the following is a major concern when prescribing aminoglycoside antibiotics (e.g., gentamicin)?