Drugs that are available only through specialty pharmacies include:

Correct Answer: B

Rationale: Choice B is correct because clozapine, due to agranulocytosis risk, is restricted to specialty pharmacies under REMS, unlike others. Choice A is incorrect as acetaminophen is widely available OTC. Choice C is wrong because ibuprofen is OTC and unrestricted. Choice D is incorrect since only clozapine fits.

Correct Answer: B

Rationale: The correct answer is B because low albumin from malnutrition increases free warfarin levels, requiring the lowest dose initially. Choice A is incorrect as LFTs aren’t indicated here. Choice C is wrong since diet doesn’t directly address albumin binding. Choice D is inaccurate as food doesn’t enhance warfarin absorption significantly.

Correct Answer: A

Rationale: The correct answer is A because valproic acid depletes folic acid, necessitating supplements to reduce fetal risk. Choice B is incorrect (changing meds mid-pregnancy is risky). Choice C is wrong (vitamin K is for later gestation). Choice D is inaccurate (discontinuing not advised without specialist consult).

Correct Answer: D

Rationale: Choice D is correct because opioids (e.g., oxycodone), benzodiazepines (e.g., alprazolam), and stimulants (e.g., Adderall) are frequently misused for euphoria or dependence, per DEA data. Choice A is incorrect alone as it's one class. Choice B is wrong by itself because benzos are just part. Choice C is incorrect solo since stimulants are only one group.

Correct Answer: B

Rationale: Choice B is correct because START (Screening Tool to Alert to Right Treatment) identifies underused beneficial drugs (e.g., statins) in the elderly, per guidelines. Choice A is incorrect as that's STOPP's role. Choice C is wrong because it's not about levels. Choice D is incorrect since only B fits.

Correct Answer: D

Rationale: Choice D is correct because pharmacists offer practical advice, Medline provides research, and the Natural Medicines Database details supplement interactions—all are reliable sources. Choice A is incorrect alone as it's not comprehensive. Choice B is wrong by itself because it lacks specialized supplement focus. Choice C is incorrect solo since it misses clinical and research inputs.

Correct Answer: C

Rationale: The correct answer is C because CRNAs in most states can order and administer controlled substances without full prescriptive authority, as they dispense directly. Choice A is incorrect since a DEA number isn’t required without prescriptive authority. Choice B is wrong as only five states grant full authority. Choice D is inaccurate as supervision isn’t always required.

Correct Answer: B

Rationale: The correct answer is B because low albumin from malnutrition increases free warfarin levels, requiring the lowest dose initially. Choice A is incorrect as LFTs aren’t indicated here. Choice C is wrong since diet doesn’t directly address albumin binding. Choice D is inaccurate as food doesn’t enhance warfarin absorption significantly.

Correct Answer: B

Rationale: The correct answer is B because elderly women are prone to folic acid deficiency, impairing hemoglobin synthesis despite iron intake. Choice A is incorrect (omega-3 unrelated). Choice C is wrong (multivitamin iron insufficient). Choice D is inaccurate (dietary folic acid less effective).