Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Prescription medicine · generic available

Leflunomide

Drug class: Antirheumatic Agent

The FDA’s “Established Pharmacologic Class”: the group of medicines that work in a similar way.

Official FDA data, not advice

Everything here comes from the U.S. Food and Drug Administration (FDA): the drug label, the NDC Directory, Drugs@FDA, recall reports and the drug shortage list. Each fact shows its source and date.

This page is not medical advice. Talk to your doctor or pharmacist before you start, stop or change any medicine.

In an emergency, call 911. If someone may have taken too much of a medicine, call Poison Help: 1‑800‑222‑1222.

Quick answers

What is Leflunomide used for?
The FDA-approved label (Arava, sanofi-aventis U.S. LLC, June 4, 2025) says: “ARAVA is indicated for the treatment of adults with active rheumatoid arthritis (RA). ARAVA is a pyrimidine synthesis inhibitor indicated for the treatment of adults with active rheumatoid arthritis.” This page is not medical advice. Talk to your doctor or pharmacist before you start, stop or change any medicine.
Does Leflunomide have a boxed warning?
Yes. The FDA label for Arava has a boxed warning, the FDA’s strongest warning. Read it on the full label and ask your pharmacist.
Is there a shortage of Leflunomide?
The FDA drug shortage list shows “To be discontinued” for a product of this medicine (updated June 8, 2026). Ask your pharmacist about alternatives.
Has Leflunomide been recalled?
FDA enforcement reports list 2 recalls of products of this medicine; the newest started June 14, 2007 (Class II). A recall usually concerns specific lots, not every product.
Who makes Leflunomide?
17 companies list prescription products of Leflunomide in the FDA NDC Directory, including Bryant Ranch Prepack, Sanofi-Aventis U.S. LLC and Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc..

What Leflunomide is used for

Quoted from the “Indications and Usage” section of the FDA-approved label.

ARAVA is indicated for the treatment of adults with active rheumatoid arthritis (RA). ARAVA is a pyrimidine synthesis inhibitor indicated for the treatment of adults with active rheumatoid arthritis.

— FDA label: Arava, sanofi-aventis U.S. LLC, effective June 4, 2025. Read the full label on DailyMed →

The FDA has 24 labels for products of this medicine (different makers and forms); uses can differ between them. Check the label that comes with your own medicine.

This page is not medical advice. Talk to your doctor or pharmacist before you start, stop or change any medicine.

Conditions named on the label

These condition names appear word for word in the label’s “Indications and Usage” text (matched with a reviewed table). Each page lists hospitals whose own websites name the condition.

Related medical specialties

Boxed warning

A boxed warning (“black box”) is the FDA’s strongest warning on a drug label, for serious or life-threatening risks.

This label has a boxed warning. Read it on the full label →

24 of 24 FDA labels for this medicine have a boxed warning.

Forms and how it is given

Dosage formsTablet · Tablet, film coated
RouteOral
Prescription products40 in the FDA NDC Directory
Brand namesArava

What pharmacies pay (NADAC)

The National Average Drug Acquisition Cost (NADAC) is the average price U.S. retail pharmacies paid to buy one unit of a medicine (one tablet, one mL or one gram), from a monthly survey of pharmacy invoices by the Centers for Medicare & Medicaid Services (CMS). State Medicaid programs use it to pay pharmacies.

This is not the price you pay. What you pay depends on your insurance (copay or coinsurance), your pharmacy and any discounts, and pharmacies also charge for filling a prescription. Ask your pharmacist or your health plan what your price will be.

NADAC per unit for Leflunomide, by strength and form
Strength and formGeneric or brandPharmacies pay
leflunomide 10 mg
tablet
Generic $0.3337 per tablet
leflunomide 10 mg
tablet, film coated
Generic $0.3337 per tablet
leflunomide 20 mg
tablet
Generic $0.3100 per tablet
leflunomide 20 mg
tablet, film coated
Generic $0.3100 per tablet

NADAC list of November 4, 2026; these prices took effect on October 21, 2026. Shown only where a package’s NDC code matches the NADAC list exactly, and only for that exact strength and form: nothing is averaged across strengths. Strengths and forms not listed here have no NADAC price.

Source: NADAC (National Average Drug Acquisition Cost) 2026, data.medicaid.gov (CMS) →

Companies that list this medicine

Labelers in the FDA NDC Directory: the company named on the package (maker or distributor), with the number of prescription products.

FDA approval history

  • NDA: New Drug Application: how a new (usually brand-name) medicine is approved.
  • ANDA: Abbreviated New Drug Application: how a generic version is approved.
Brand and biologic applications
ApplicationSponsorApprovedLater changes approved
NDA020905
ARAVA
Sanofi Aventis UsSeptember 10, 1998 20, latest June 28, 2024
2024: Labeling · 2016: Labeling · 2015: Labeling

Generic approvals (8)

Shortage status

To be discontinued · updated June 8, 2026 · first posted June 8, 2026

ProductArava, Tablet, 20 mg (NDC 0088-2161-30)
CompanySanofi-Aventis U.S. LLC

Ask your pharmacist whether your product is affected and what the options are.

FDA Drug Shortages database →

Recalls

From FDA enforcement reports, matched by the product’s NDC code. A recall usually covers specific lots only: check the lot number on your package and ask your pharmacist. Do not stop a medicine on your own.

  1. June 14, 2007 · Class II · Terminated · D-1661-2012

    Subpotent (Single Ingredient Drug): Distribution of product that did not meet specifications.

    Leflunomide tablets, 10 mg, a) 30-count bottle (NDC 60505-2502-1), b) 1000-count bottle (NDC 60505-2502-3), Rx only, Manufactured for Apotex Corp., Weston, Florida 33326 by Apotex Inc., Toronto, Ontario Canada M9L 1T9 — Apotex Corp.

  2. June 14, 2007 · Class II · Terminated · D-1662-2012

    Subpotent (Single Ingredient Drug): Distribution of product that did not meet specifications.

    Leflunomide tablets, 20 mg, 1000-count bottle, Rx only, Manufactured for Apotex Corp., Weston, Florida 33326 by Apotex Inc., Toronto, Ontario Canada M9L 1T9, NDC 60505-2503-3 — Apotex Corp.

What do the recall classes mean?

Class I: The most serious type: there is a reasonable chance that using the product will cause serious health problems or death.
Class II: Using the product may cause temporary or medically reversible health problems, or the chance of serious problems is remote.
Class III: Using the product is not likely to cause health problems (for example a labeling or packaging issue).

Official identifiers

RxCUI (RxNorm)205284, 205285, 205286, 213377, 213379, 213380
SPL set ID of the quoted label320f63f2-fac3-4aee-aff8-85724e00ef52
FDA labels (SPL)24
FDA applicationsNDA020905, 8 ANDA
Active ingredients (FDA)LEFLUNOMIDE

Sources

  1. FDA-approved label on DailyMed (National Library of Medicine) — Arava, sanofi-aventis U.S. LLC, effective June 4, 2025; via openFDA, FDA data exported October 30, 2026, retrieved October 31, 2026
  2. NDC Directory (openFDA) — U.S. Food and Drug Administration (FDA), FDA data exported October 30, 2026, retrieved October 31, 2026
  3. Drugs@FDA (openFDA) — U.S. Food and Drug Administration (FDA), FDA data exported October 30, 2026, retrieved October 31, 2026
  4. Drug recall enforcement reports (openFDA) — U.S. Food and Drug Administration (FDA), FDA data exported October 27, 2026, retrieved October 31, 2026
  5. Drug shortages (openFDA) — U.S. Food and Drug Administration (FDA), FDA data exported October 30, 2026, retrieved October 31, 2026

openFDA data is provided by the FDA as is; it may be incomplete. Always rely on the label that comes with your medicine. FDA Enforcement Report search →

Report an error → · Information for medicine makers