Under what condition do the restrictions on dextromethorphan sales not apply?

The restrictions on dextromethorphan sales do not apply when it is dispensed pursuant to a prescription. This is because when a medication is prescribed by a licensed healthcare provider, it is treated as a legitimate medical treatment under the law. Therefore, the usual regulations or restrictions that apply to over-the-counter purchases, such as age limits or quantity limitations, are waived in this context. The focus here is on the medical necessity and professional oversight inherent in the prescription process, which allows for the use of the drug in a manner deemed appropriate by the prescriber.

In contrast, online sales, bulk purchases, and promotional items are typically subject to various regulations and restrictions, as these scenarios can lead to misuse or overuse of dextromethorphan. For instance, online sales may not ensure proper age verification, bulk purchases can facilitate dangerous misuse, and promotional items often do not allow for any health considerations regarding the distribution of the substance. Thus, the prescription dispensation remains the only scenario where these restrictions do not apply.