Schedule III is the middle tier of the five federal drug categories created by the Controlled Substances Act, covering drugs that have an accepted medical use but still carry a moderate-to-low risk of physical dependence or a high risk of psychological dependence. So when you ask what Schedule III means, the short answer is: a prescription drug the federal government considers less dangerous than Schedule II substances like oxycodone, but more tightly controlled than the Schedule IV drugs at the next step down. Ketamine, testosterone, anabolic steroids, buprenorphine, and low-dose codeine combinations like Tylenol with Codeine all sit here.
The Legal Definition
Federal law requires three findings before a substance lands on Schedule III. Its abuse potential must be lower than drugs on Schedules I and II. It must have a currently accepted medical use in the United States. And abusing it may lead to moderate or low physical dependence, or high psychological dependence.1Office of the Law Revision Counsel. 21 USC 812 – Schedules of Controlled Substances All three have to be satisfied. A drug that meets only one or two ends up on a different schedule or stays unscheduled.
The distinction from neighboring schedules matters. Schedule I drugs (currently including heroin and, at least for now, marijuana) are treated as having no accepted medical use at all. Schedule II drugs have accepted uses but the highest abuse risk among prescribable substances. Schedule III sits below that line: still controlled, still capable of causing dependence, but treated as safer to prescribe in ordinary medical practice.
Drugs Currently on Schedule III
The list covers a wider range of medicine than most people expect. Some of the substances you’re most likely to encounter:
- Ketamine, a fast-acting injectable anesthetic used in surgery and veterinary medicine, and increasingly prescribed off-label for treatment-resistant depression.2DEA. Drug Fact Sheet – Ketamine
- Testosterone, prescribed as a topical gel or injectable for hormone replacement therapy.3Drug Enforcement Administration. Controlled Substance Schedules
- Anabolic steroids as an entire class, including oxandrolone.4United States Drug Enforcement Administration. Drug Scheduling
- Codeine combination products containing less than 90 milligrams of codeine per dosage unit. Tylenol with Codeine is the familiar example. The low dose and combination with acetaminophen keep it out of Schedule II.3Drug Enforcement Administration. Controlled Substance Schedules
- Buprenorphine, sold under brand names like Suboxone, used to treat opioid use disorder.5Drug Enforcement Administration. MATE Training Letter
What Schedule III Means for Prescriptions
The scheduling classification isn’t just a label. It sets the rules a pharmacy has to follow when filling your prescription, and those rules are noticeably looser than they are for Schedule II drugs.
Refills Are Allowed
A pharmacist can refill a Schedule III prescription up to five times after the original fill, for a maximum of six total dispensings. All refills have to happen within six months of the date the prescription was written. Once you hit either limit, you need a new prescription.6eCFR. 21 CFR Part 1306 – Controlled Substances Listed in Schedules III, IV, and V Schedule II drugs can’t be refilled at all. Every dispensing requires a brand-new prescription.
Prescriptions Can Be Phoned In
A Schedule III prescription can be written on paper, transmitted electronically, or communicated orally by phone to the pharmacy, as long as federal documentation requirements are met.7Drug Enforcement Administration. Practitioners Manual Schedule II prescriptions generally require a written or electronic prescription, with no phone-in option.
Telehealth Prescribing Through 2026
Through December 31, 2026, a DEA-registered practitioner can prescribe Schedule III drugs by telehealth without ever having seen the patient in person. This is the fourth temporary extension of COVID-era telemedicine flexibilities jointly issued by the DEA and HHS.8Federal Register. Fourth Temporary Extension of COVID-19 Telemedicine Flexibilities for Prescription of Controlled Substances The prescriber still has to issue the prescription for a legitimate medical purpose and use real-time audio-visual communication. The DEA has not finalized permanent telehealth rules, so this could change after 2026.
Transfers Between Pharmacies
If you need to pick up your medication at a different pharmacy, the original pharmacy can transfer the prescription, but only once, and only if state law also allows it. Federal rules limit electronic prescription transfers for controlled substances to a single transfer between two DEA-registered retail pharmacies.9United States Drug Enforcement Administration. Revised Regulation Allows DEA-Registered Pharmacies to Transfer Electronic Prescriptions at a Patients Request
The Federal Warning on the Label
Every bottle or package of a dispensed Schedule III drug must carry a specific warning: “Caution: Federal law prohibits the transfer of this drug to any person other than the patient for whom it was prescribed.”10eCFR. 21 CFR 290.5 – Drugs; Statement of Required Warning Sharing a prescription with someone else is a federal offense regardless of intent.
Criminal Penalties
Being on Schedule III also defines the criminal exposure for possessing, making, or selling the drug outside a valid prescription. The gap between personal possession and distribution is large.
Simple Possession
Possessing a Schedule III drug without a valid prescription is a federal misdemeanor for a first-time offender. The maximum sentence is one year in prison, with a mandatory minimum fine of $1,000.11Office of the Law Revision Counsel. 21 USC 844 – Penalties for Simple Possession
Repeat offenses escalate fast. A second conviction carries a mandatory minimum of 15 days in prison (up to two years) and a minimum $2,500 fine. A third or later conviction means at least 90 days (up to three years) and a minimum $5,000 fine.11Office of the Law Revision Counsel. 21 USC 844 – Penalties for Simple Possession Those minimums are real floors. A judge cannot go below them.
Manufacturing, Distribution, and Trafficking
Making or selling Schedule III drugs is in a different league. A first offense carries up to 10 years in prison, a fine of up to $500,000 for an individual (or $2.5 million for an organization), or both. If someone dies or suffers serious bodily injury from the drug, the maximum prison term rises to 15 years.12Office of the Law Revision Counsel. 21 USC 841 – Prohibited Acts A
A second felony drug offense doubles the ceiling: up to 20 years in prison, up to $1 million in fines for an individual, and $5 million for an organization. If death or serious injury results, the maximum climbs to 30 years.12Office of the Law Revision Counsel. 21 USC 841 – Prohibited Acts A Prosecutors don’t need to prove a completed sale. Possession with intent to distribute, supported by evidence like packaging materials, scales, or large amounts of cash, triggers the same penalties.
Supervised Release
Federal trafficking sentences include mandatory supervised release after prison. A first-time offender faces at least two years, and a repeat offender at least four, on top of any prison time.12Office of the Law Revision Counsel. 21 USC 841 – Prohibited Acts A Violating the terms can send someone back to prison, so the consequences reach well past the original sentence.
The Cannabis Rescheduling Proposal
Much of the recent public interest in Schedule III traces to a single proposal. In May 2024, the Department of Justice published a proposed rule to move marijuana from Schedule I down to Schedule III. The proposal drew nearly 43,000 public comments and, as of late 2025, was still awaiting an administrative law hearing before the DEA.13White House. Increasing Medical Marijuana and Cannabidiol Research
If it is finalized, cannabis businesses in states where it’s legal could potentially deduct ordinary business expenses on their federal tax returns, which Schedule I classification currently blocks under Internal Revenue Code Section 280E. Researchers would face fewer regulatory hurdles. Possession and distribution would still be federally regulated, just under the Schedule III penalty structure described above rather than the Schedule I framework. Rescheduling would not legalize recreational cannabis at the federal level.