16. According to federal law pharmacies must use controlled substance ordering to receive stock bottles of which of the following medications?

Answer: B

Explanation:

Pharmacies must use controlled substance ordering to receive stock bottles of Methylphenidate.

Methylphenidate is classified as a Schedule II controlled substance under federal law, which necessitates specific ordering procedures for its procurement in pharmacies.

A) Medroxyprogesterone

Medroxyprogesterone is not classified as a controlled substance; it is a prescription medication but does not fall under the strict regulations that govern controlled substances. Therefore, it does not require controlled substance ordering for stock.

B) Methylphenidate

Methylphenidate is indeed a Schedule II controlled substance, which means that pharmacies must follow regulated procedures to order it. This includes maintaining specific documentation and adhering to federal guidelines regarding its distribution.

C) Metolazone

Metolazone is not classified as a controlled substance and does not require controlled substance ordering. It is used as a diuretic but is not subject to the same regulatory restrictions as medications classified under controlled substances.

D) Metaxalone

Metaxalone is also not classified as a controlled substance. It is a muscle relaxant that does not have the same regulatory requirements as controlled substances, thus pharmacies do not need to use controlled substance ordering to receive it.

Conclusion

Methylphenidate is the only option listed that requires controlled substance ordering due to its classification as a Schedule II controlled substance. The other options, while they may be prescription medications, do not fall under the same regulatory framework, making Methylphenidate the definitive correct answer in this context.