OAR 855-041-1125
Prescription Expiration
(1)
After one year from date of issue, a prescription for a non-controlled substance becomes invalid and must be re-authorized by the prescriber.(2)
When used alone as a prescription refill designation the abbreviation, “PRN” for a non-controlled substance means that the medication can be refilled in proper context for a period of one year.(a)
When this abbreviation is used alone as a means to authorize refills for a controlled substance, the medication can be refilled in proper context for a period of six months or five refills, whichever comes first.(b)
When this abbreviation is used in conjunction with a definite time period, or a specific number of refills, the non-controlled medication can be refilled in proper context for a period not to exceed one year.(3)
The prescription shall not be refilled out of context with the approximate dosage schedule unless specifically authorized by the prescriber.(4)
A “non-controlled substance” means those drugs defined as “legend” pursuant to ORS 689.005 (Definitions)(29) but does not include those drugs or substances controlled under the jurisdiction of the United States Department of Justice Drug Enforcement Administration.
Source:
Rule 855-041-1125 — Prescription Expiration, https://secure.sos.state.or.us/oard/view.action?ruleNumber=855-041-1125
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