A Schedule 6 controlled substance is a state-level drug classification used by a small number of states to regulate substances that fall outside the five federal drug schedules. There is no federal Schedule 6. The federal Controlled Substances Act stops at Schedule V, so any reference to Schedule 6 (often written Schedule VI) is a creature of state law, and what it covers depends entirely on which state you are in.
Why There Is No Federal Schedule 6
The federal Controlled Substances Act creates exactly five schedules, numbered I through V. Schedule I covers drugs with high abuse potential and no accepted medical use, like heroin and LSD. Schedule V sits at the other end, covering preparations with limited quantities of certain narcotics, such as cough medicines containing small amounts of codeine. Every drug the federal government treats as a controlled substance fits somewhere inside that I-through-V framework. 1Office of the Law Revision Counsel. 21 USC 812 – Schedules of Controlled Substances
That framework leaves a gap. Thousands of medications require a prescription under FDA rules but carry no federal scheduling at all. Amoxicillin and lisinopril are prescription drugs, but neither one is a federally controlled substance. Some states filled that gap by adding a sixth schedule.
What States Put on Schedule VI
States that use a Schedule VI take one of two approaches, and the difference matters because it changes what is covered.
The first is a catch-all for prescription drugs that have no federal schedule. Under this model, any medication that requires a prescription but does not appear on federal Schedules I through V automatically becomes a Schedule VI substance. That sweeps in a long list of everyday medications: antibiotics, blood pressure drugs, antidepressants, cholesterol medications, diabetes drugs. Most patients would never think of these as “controlled.” Massachusetts and Virginia both use versions of this model, though the specifics differ.
The second approach targets specific substances. North Carolina designates marijuana and tetrahydrocannabinols as its primary Schedule VI substances, with an exception for hemp-derived products containing no more than 0.3 percent delta-9 THC by dry weight. Rather than placing marijuana on Schedule I alongside heroin as federal law does, the state created a separate category with lighter penalties.
Some states blend the two. Virginia’s Schedule VI picks up prescription drugs not covered by federal scheduling, and it also captures certain inhalants and industrial chemicals used recreationally, including toluene (found in spray paint and adhesives), amyl nitrite, butyl nitrite, and nitrous oxide. These substances are not drugs in any traditional sense, but they are abused recreationally and conventional scheduling does not reach them. Classifying them this way does not ban the commercial products that contain them; it gives law enforcement a tool to address recreational misuse.
Which States Use Schedule VI
Only a handful of states maintain a Schedule VI classification. The federal five-schedule structure is the baseline everywhere, and most states mirror it without adding a sixth tier. The states that do recognize Schedule VI include Massachusetts, Virginia, North Carolina, Arkansas, Idaho, Alaska (which calls it Schedule VIA), and Tennessee. Each state’s version covers different substances and serves a somewhat different purpose.
Because adoption is limited, Schedule VI is not a universal concept. A substance that is Schedule VI in one state may carry no state-level scheduling at all in another. For professionals licensed in multiple states, that means different regulatory obligations in each jurisdiction.
Penalties
Schedule VI is the lowest rung of controlled substance classification, and the penalties reflect that. Simple possession is typically a misdemeanor rather than a felony, though specifics vary by state.
In states that place marijuana on Schedule VI, penalties generally scale with quantity. Small amounts may draw a low-level misdemeanor and a fine. Larger quantities, especially those suggesting an intent to distribute, can escalate to felony charges carrying years of incarceration.
For prescription drugs that fall into Schedule VI through the catch-all model, the usual violation is possessing someone else’s prescription medication or dispensing without proper authorization. Those are generally misdemeanors, with distribution offenses treated more seriously than simple possession.
“Lowest” does not mean “zero.” A Schedule VI conviction still produces a criminal record, and for anyone holding a healthcare license, even a misdemeanor drug conviction can trigger a licensing board review.
What Schedule VI Means for Prescribers and Pharmacies
Schedule VI adds a layer of state regulation on top of the federal system, with real consequences for practitioners.
In states that use the catch-all model, a practitioner who only handles non-federally-scheduled prescription drugs needs a state controlled substances registration, but not necessarily a federal DEA registration. The DEA number is required for prescribing drugs on federal Schedules II through V. A clinician writing only for Schedule VI drugs (antibiotics, blood pressure medications, and similar) can operate under the state registration alone. Anyone prescribing across both state and federal schedules needs both.
Dispensing rules for Schedule VI drugs come from state pharmacy boards rather than the DEA. Federal regulations govern prescription requirements for Schedules II through V, including the five-refill maximum and six-month expiration for Schedule III and IV prescriptions. Those federal rules do not apply to Schedule VI. State pharmacy boards set their own refill limits, validity periods, and dispensing protocols.
License consequences follow the same framework as other controlled substance violations. State licensing boards can suspend, revoke, or restrict a license for illegally possessing, diverting, or improperly dispensing any scheduled substance, Schedule VI included. A clinician who self-prescribes a Schedule VI medication or diverts it from a patient faces the same license exposure as with any other scheduled drug.
Monitoring and Reporting
Most state Prescription Drug Monitoring Programs track dispensing on federal Schedules II through V, and some narrow that further to Schedules II through IV. Schedule VI substances generally fall outside PDMP reporting, so pharmacies are not required to log every Schedule VI prescription into the state monitoring database. PDMPs were built around opioids, benzodiazepines, stimulants, and other high-risk drugs, and routine prescription medications do not raise the same diversion concerns. The practical effect is less surveillance of Schedule VI drugs, which is consistent with their lower abuse potential but means misuse patterns can be harder to detect.