Allopurinol: what it does and why early flares can happen

Quick take

The useful answer first.

01It lowers uric acid over time.

02Flares can temporarily increase after starting urate-lowering treatment.

03Prescribed treatment should not be stopped or changed because of something read here.

The context

What sits behind the quick answer.

Allopurinol lowers uric acid. The NHS says regular treatment can reduce gout attacks and help prevent joint damage, although attacks can temporarily increase during the first few months as treatment starts working.

Long-term treatment, not a painkiller

Allopurinol is not intended to switch off the pain of an acute flare. Its job is long-term urate lowering. NICE recommends a treat-to-target strategy when urate-lowering therapy is used.

Do not change it from an article

Starting, stopping and dose adjustment need clinical guidance. If you think you are having a medicine reaction, seek appropriate medical advice rather than experimenting with the dose yourself.

Primary source

Read the guidance/source →

Evidence reviewed September 2026. General information only; not medical advice.

In real life

How to use this without overthinking it.

1Know why you were prescribed it and what urate target your clinician is using.

2Keep taking it exactly as prescribed unless your clinician tells you otherwise.

3Bring questions about side effects, dose or flare prevention to your prescriber.

Evidence & safety

Keep the boundaries clear.

GoutSense separates general evidence from individual medical advice. Food and lifestyle context can be useful, but it does not diagnose gout and should not be used to start, stop or alter prescribed medication.

Evidence review: September 2026Editorial standard: practical answer → evidence → limitations