Refill
Clinical reviewer: Elena Gizzi, MSN, RN · Last checked September 24, 2026
What is a prescription refill?
Refill refers to dispensing a prescription drug again under a prescription that already authorizes it, rather than under a brand-new prescription. Federal law allows a pharmacist to fill a written or oral prescription again only if the prescriber authorized refilling, either in the original prescription or by a later order reduced to writing.
How do prescription refills work?
Under federal law, a prescription drug may be dispensed again only if the prescriber authorized refilling, either in the original prescription or through a later order reduced to writing and filed by the pharmacist [1]. Refilling is different from a brand-new prescription: it draws on authorization the prescriber already gave [1].
Are refill rules different for controlled substances?
Yes. A Schedule II controlled substance cannot be refilled at all; each fill requires a new prescription [3]. Schedule III and IV controlled substances can be refilled, but not more than five times, and not more than six months after the original prescription date [2]. Wegovy is not a controlled substance: its label lists "DEA Schedule: None" [4].
Frequently asked questions
Can a Schedule II medication be refilled?+−
No. Refilling a prescription for a Schedule II controlled substance is prohibited; each fill needs a brand-new prescription.
Is an injectable GLP-1 like Wegovy a controlled substance?+−
No. The Wegovy label lists "DEA Schedule: None," so the stricter refill limits that apply to controlled substances do not apply to it.
Related terms
Sources
This entry is for education and is not medical advice. Talk with a licensed clinician about your own situation before starting, stopping, or changing any treatment.
