Schedule V

Schedule V is the lowest restriction tier of the United States Controlled Substances Act (CSA), a federal statute enacted in 1970. It covers substances that have a currently accepted medical use in the United States, a low potential for abuse relative to Schedule IV substances, and limited risk of physical or psychological dependence.

The tier typically applies to low-concentration formulations of otherwise controlled compounds — preparations where the restricted ingredient is present in quantities the scheduling authority judged unlikely to drive misuse on their own.

The term Schedule V appears in other legal systems with different meanings. These pages use it in the US federal sense unless stated otherwise.

What it means in practice

Scheduling decisions under the CSA are administered jointly by the Drug Enforcement Administration (DEA) and the Department of Health and Human Services (HHS). HHS provides a scientific and medical evaluation; the DEA makes the final scheduling determination. A substance can be placed, transferred between schedules, or removed through either an Act of Congress or administrative rulemaking.

Schedule V carries the lightest restrictions among the CSA's five tiers. Substances in this schedule may be prescribed and dispensed under requirements that are less onerous than for higher schedules. Some states permit retail sale of certain Schedule V preparations without a prescription under state-specific conditions, while federal regulations continue to govern manufacturing and distribution.

Research involving Schedule V substances requires DEA registration, as with all scheduled substances, but with comparatively reduced record-keeping requirements.

How jurisdictions vary

Schedule numbers do not carry across legal systems. The United Kingdom's Misuse of Drugs Regulations 2001 uses a Schedule 5 designation, but in the UK framework it refers to substances exempt from most controls — a different concept, applied to a largely different set of substances.

Canada and Australia each administer controlled substances under their own frameworks, with different numbering and different criteria. A preparation that is Schedule V in the United States may be unscheduled and available without restriction in one country and prohibited outright in another. The US federal classification provides no information about how any other jurisdiction treats the same compound.

What is contested

The phrase low potential for abuse is a legal standard assessed at the time of scheduling, not a permanent scientific finding. For some Schedule V substances, evidence gathered after initial placement has indicated patterns of misuse or dependence not fully captured by the original assessment. The CSA allows for rescheduling by rulemaking when new evidence warrants it, but the process takes time — and the legal status and the published evidence can remain out of step during that interval.

Scope and currency

This entry describes the US federal Schedule V classification as of August 2026 and is not legal advice. Scheduling status changes through rulemaking and legislation; this entry may not reflect recent amendments. Law varies by jurisdiction, and a federal classification does not determine what any state, territory, or foreign legal system permits or prohibits. The per-substance legal status section on each record carries its own jurisdiction, date, and source, and is the value to rely on for specific compounds.