Allopurinol: study card

Allopurinol — Xanthine oxidase inhibitor. Study the mechanism, listed uses and warnings from the US label on one sourced card.

Generic name: Allopurinol
Class: Xanthine oxidase inhibitor
Mechanism: Hypoxanthine analogue; it and oxypurinol inhibit xanthine oxidase, reducing uric acid production.
Used for: Management of symptomatic primary or secondary gout in adults; Cancer-therapy-related uric acid elevation in adults and children with specified malignancies; Recurrent calcium oxalate stones in adults with excess urinary uric acid despite lifestyle measures
Common side effects: Skin rash; Diarrhea; Nausea; Acute gout attacks; Elevated liver enzymes
Warnings: Serious skin reactions (SJS/TEN, DRESS); Gout flares at initiation; Hepatotoxicity / myelosuppression; The cited label does not recommend treatment of asymptomatic hyperuricemia
Interactions: Mercaptopurine / azathioprine; Capecitabine; Thiazides, ampicillin/amoxicillin (rash)

Brand questions use only name pairings verified against the linked product source. Unverified pairings are withheld from these questions; the other study content remains available.

Read the source label ↗

Label date: 20260903 · For learning, not clinical decisions. US label and brand information; always consult the current source.

Source snapshot checked: 2026-10-21. The source document and selected fields were compared. The complete card has not had an independent clinical review.

Practice

Pronunciation

Allopurinol: al-oh-PURE-i-nol

Pronunciation is shown for the US English generic name.

Body system

Musculoskeletal · 10 Drug cards

Compare with related cards

Etodolac

Same body system: Musculoskeletal

Mechanism: Shows anti-inflammatory, analgesic and antipyretic activity in animal models. Its mechanism is not completely understood and may involve prostaglandin-synthetase inhibition.

On both cards: Common side effects — Diarrhea; Nausea

Only on the Etodolac card: Used for — Signs and symptoms of osteoarthritis or rheumatoid arthritis in adults; Acute pain in adults · Common side effects — Dyspepsia; Abdominal pain; Dizziness · Warnings — Asthma or allergy after aspirin/other NSAIDs; New or worsening hypertension, heart failure; Hepatic reactions, elevated liver tests · Interactions — Warfarin (synergistic GI bleeding); ACE inhibitors, thiazide and loop diuretics; Lithium, methotrexate, cyclosporine, digoxin

An item counts as shared only when both cards use the same wording. If a card does not list an item, that is not a statement that the effect never occurs.