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Prescription medicine · generic available

Allopurinol

Also listed by the FDA as: allopurinol · allopurinol sodium

Drug class: Xanthine Oxidase Inhibitor

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 Allopurinol used for?
The FDA-approved label (Aloprim, Mylan Institutional LLC, February 18, 2022) says: “ALOPRIM is indicated for the management of adult and pediatric patients with leukemia, lymphoma, and solid tumor malignancies who are receiving cancer therapy which causes elevations of serum and urinary uric acid levels and who cannot tolerate oral therapy. …” This page is not medical advice. Talk to your doctor or pharmacist before you start, stop or change any medicine.
Does Allopurinol have a boxed warning?
The label we quote has no boxed warning, but 5 of 134 FDA labels for this medicine do. Check the label of your own product.
Is there a shortage of Allopurinol?
The FDA drug shortage list shows “To be discontinued” for a product of this medicine (updated February 19, 2026). Ask your pharmacist about alternatives.
Has Allopurinol been recalled?
FDA enforcement reports list 5 recalls of products of this medicine; the newest started June 7, 2024 (Class II). A recall usually concerns specific lots, not every product.
Who makes Allopurinol?
47 companies list prescription products of Allopurinol in the FDA NDC Directory, including Bryant Ranch Prepack, A-S Medication Solutions and Aphena Pharma Solutions - Tennessee, LLC.

What Allopurinol is used for

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

ALOPRIM is indicated for the management of adult and pediatric patients with leukemia, lymphoma, and solid tumor malignancies who are receiving cancer therapy which causes elevations of serum and urinary uric acid levels and who cannot tolerate oral therapy. …

— FDA label: Aloprim, Mylan Institutional LLC, effective February 18, 2022. Read the full label on DailyMed →

The FDA has 134 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.

Boxed warning

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

The label quoted above has no boxed warning.

5 of 134 FDA labels for this medicine have a boxed warning.

Forms and how it is given

Dosage formsTablet · Injection, powder, lyophilized, for solution
RouteOral · Intravenous
Prescription products175 in the FDA NDC Directory
Brand namesAloprim

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 Allopurinol, by strength and form
Strength and formGeneric or brandPharmacies pay
allopurinol 100 mg
tablet
Generic $0.0312 per tablet
allopurinol 200 mg
tablet
Generic $1.87 per tablet
allopurinol 300 mg
tablet
Generic $0.0522 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
NDA016084
ZYLOPRIM
Casper Pharma LLCAugust 19, 1966 22, latest September 21, 2023
2023: Labeling · 2023: Labeling · 2023: Labeling
NDA018832
ALLOPURINOL
Watson LabsSeptember 28, 1984 26, latest April 3, 2024
2024: Labeling · 2024: Labeling · 2024: Labeling
NDA018877
ALLOPURINOL
Watson LabsSeptember 28, 1984 26, latest April 3, 2024
2024: Labeling · 2024: Labeling · 2024: Labeling
NDA020298
ALOPRIM
MylanMay 17, 1996 7, latest February 17, 2022
2022: Labeling · 2020: Labeling · 2020: Labeling

Generic approvals (15)

Shortage status

To be discontinued · updated February 19, 2026 · first posted February 19, 2026

ProductAllopurinol, Tablet, 100 mg (NDC 0591-5543-01)
CompanyTeva Pharmaceuticals USA, Inc.

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 7, 2024 · Class II · Terminated · D-0583-2024

    Presence of foreign substance.

    Allopurinol Tablets, USP 300mg, 100 Tablets per bottle, Rx only, Manufactured By: Dr. Reddy's Laboratories LA LLC, Shreveport, LA 71106 USA, NDC 55111-730-01. — Dr. Reddy's Laboratories, Inc.

  2. January 12, 2023 · Class II · Terminated · D-0168-2023

    Presence of Foreign Substance: Presence of a small piece of green plastic embedded in the crack towards the edge of the tablet.

    Allopurinol Tablets USP, 100 mg, 100-count bottle, Rx Only, Manufactured for: Accord Healthcare, Inc., Durham, NC 27703, Manufactured by: Intas Pharmaceuticals Limited, Pharmez, Ahmedabad-382 213. India. NDC 16729-134-01 — Accord Healthcare, Inc.

  3. January 26, 2022 · Class II · Terminated · D-0164-2024

    CGMP Deviations: Products were exposed to temperatures outside of the products labeled storage conditions.

    ALLOPURINOL Tablets, USP 300 MG 500 count Tablets per bottle, Rx only, Manufactured By: Dr. Reddy's Laboratories LA LLC, Shreveport, LA 71106. NDC: 55111-730-05 — CARDINAL HEALTHCARE

  4. May 5, 2020 · Class II · Terminated · D-1271-2020

    Discoloration: Out-of-specification results for appearance obtained during routine stability testing at the end of shelf-life for the parameters Appearance and Color of Solution.

    Aloprim (allopurinol sodium) for Injection, 500 mg Single-Dose Vial, Rx only, Manufactured for: Mylan Institutional LLC, Rockford, IL 61103 USA. NDC: 67457-187-50 — Mylan Institutional LLC

  5. July 20, 2015 · Class III · Terminated · D-1405-2015

    Failed Tablet/Capsule Specifications; report of oversized and discolored tablets

    ALLOPURINOL TABLETS, USP, 300 mg, 500 count bottle, Rx only, Manufactured for: QUALITEST PHARMACEUTICALS, HUNTSVILLE, AL 35811 --- NDC 0603-2116-28 — Qualitest Pharmaceuticals

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)197319, 197320, 245422, 252931, 261265
SPL set ID of the quoted label10cc918f-aa44-415b-932d-2404695ac449
FDA labels (SPL)134
FDA applicationsNDA016084, NDA018832, NDA018877, NDA020298, 15 ANDA
Active ingredients (FDA)ALLOPURINOL

Sources

  1. FDA-approved label on DailyMed (National Library of Medicine) — Aloprim, Mylan Institutional LLC, effective February 18, 2022; 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 →

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