When do C2 prescriptions expire?

C2 prescriptions, or prescriptions for Schedule II controlled substances, do not have an expiration date in terms of a set period after which they automatically become invalid. This reflects a crucial aspect of pharmacy law regarding controlled substances. In practice, while many states may have regulations or guidelines about how long a prescription can be filled after its issuance, the law does not impose a specific expiration on the prescription itself.

Nonetheless, it's essential to recognize that while a C2 prescription does not expire, the prescriber may determine the period during which the medication should be dispensed, and pharmacists must ensure that their professional judgment is applied regarding its validity based on the clinical situation.

In some situations, factors such as state law, prescriber instructions, and clinical appropriateness may dictate when a prescription should no longer be honored. This highlights the importance of understanding the nuances of prescribing laws and clinical practices surrounding controlled substances.