What does “off-label” use of a medicine mean?

Updated 2026-10-11 · Reviewed for accuracy by the EKO Labs team. Educational only; not medical advice.

Sometimes a doctor prescribes an FDA-approvedFDA-approved the FDA reviewed the medicine's safety and effectiveness for a specific use. medicine for a use that is not listed on its FDA-approved labelPrescribing information (label) the official FDA document for a medicine, with its uses, warnings and side effects.. This is called “off-label” use. It is legal and common in U.S. medicine, but it means something specific, and it can affect safety information and insurance coverage. This guide explains what off-label use is, how it differs from other situations, and what to ask your doctor. It is general information, not medical advice.

Do not start, stop or change a prescription medicine on your own because of something you read here; talk to your prescriber or pharmacist first. In an emergency, call 911.

What “approved” means

Before the U.S. Food and Drug Administration (FDA) approves a medicine, the company must send clinical data and other information showing that the drug is safe and effective for its intended uses. FDA explains that “safe” does not mean the drug has no side effects; it means FDA decided the benefits for a particular use outweigh the potential risks. When you take a medicine for its approved use, FDA has reviewed its benefits and risks for that use, and there is approved labeling for health care providers on how to use it safely and effectively for that use.

What “off-label” means

FDA calls it the “unapproved use of an approved drug.” According to FDA, it can mean that the medicine is:

• used for a different disease or condition than the one it is approved to treat;
• given in a different way, for example as a liquid when it is approved as a capsule;
• given at a different dose than the approved labeling describes.

It can also mean use in a group of people the label does not cover, for example an age group outside the approved population. FDA says that once a drug is approved, health care providers generally may prescribe it for an unapproved use when they judge it medically appropriate for their patient. The decision is made by the prescriber, not by FDA. FDA also reminds patients that, for an unapproved use, FDA has not determined that the drug is safe and effective for that use.

Why a doctor might suggest it

FDA gives two common reasons: there may be no approved medicine for your condition, or you may have tried the approved treatments without benefit. Some off-label uses are well studied and widely accepted; others rest on limited evidence. That is why it helps to ask what evidence supports the use in your case.

How to check the approved uses

The approved uses are in section 1, “Indications and Usage,” of the FDA prescribing information, free on DailyMed (dailymed.nlm.nih.gov) and Drugs@FDA. Look also for “Limitations of Use” in that section. The same active ingredient can be sold under different brand names with different approved uses. For example, semaglutide is sold as Ozempic®, approved for adults with type 2 diabetes, and as Wegovy®, approved for chronic weight management and to reduce cardiovascular risk in certain adults. Approved uses can change when FDA approves new ones, so check the current label and the revision date.

Off-label, compounded and investigational: not the same thing

• Off-label use: an FDA-approved medicine used in a way its label does not list.
• Compounded medicines: made by a pharmacy for an individual patient. They are not FDA-approved, so they have no FDA-approved uses or labeling at all. See our guide on brand-name vs. compounded medicines.
• Investigational drugs: not yet approved by FDA for any use. Patients usually get them through a clinical trial (search ClinicalTrials.gov) or, in some cases, through FDA’s expanded access program, which is for people with a serious or immediately life-threatening condition and no comparable or satisfactory alternative therapy.

Insurance and off-label use

A plan may cover a medicine for its approved use but deny it for an off-label use, or ask for prior authorization. In Medicare Part D, plans cover a drug only for a “medically accepted indication”: a use approved by FDA, or a use supported by citations in certain drug reference books called compendia (American Hospital Formulary Service Drug Information, United States Pharmacopeia-Drug Information or its successor, and DRUGDEX), with separate rules for cancer treatments (42 U.S.C. 1395w-102(e)(4) and 1396r-8(k)(6)). If coverage is denied, you can ask your plan for an exception or appeal; see our guide on prior authorization and appeals.

Questions to ask your doctor

FDA suggests questions like these:

• What is this medicine approved for?
• Are there other medicines or therapies approved for my condition?
• What scientific studies support using this medicine for my condition?
• Is it likely to work better than an approved treatment?
• What are the possible benefits and risks for me?
• Will my health insurance cover it for this use?
• Is there a clinical trial for my condition that I could join?

Sources: FDA, “Understanding Unapproved Use of Approved Drugs ‘Off Label’”; FDA, “Expanded Access”; 42 U.S.C. 1395w-102(e)(4) and 1396r-8(k)(6) and (g)(1)(B)(i); 42 CFR 423.100 (eCFR, current text, October 2026); FDA prescribing information for Ozempic and Wegovy, section 1 (openFDA, consulted October 2026). This guide is general information, not medical advice.