Allopurinol is named as an intervention in 3 current clinical trials in our USA register. 3 are recruiting patients now. The most common phase is Phase 3. The sponsor with the most trials is Crystalys Therapeutics (2). The most-studied condition is Gout.
| Study | Phase | Status | Lead sponsor | Registers |
|---|---|---|---|---|
|
A Study of Dotinurad Versus Allopurinol in Participants With Gout
NCT07089875 · ClinicalTrials.gov ↗ · Gout
|
Phase 3 | Recruiting | Crystalys Therapeutics | USA |
|
A Study of Dotinurad Versus Allopurinol in Tophaceous Gout
NCT07089888 · Tophaceous Gout
|
Phase 3 | Recruiting | Crystalys Therapeutics | USA |
|
Drug-Drug Interaction Study of ABP-671 in Gout Patients
NCT07367971 · ClinicalTrials.gov ↗ · Gout Chronic, Gout, DDI (Drug-Drug Interaction)
|
Phase 1 | Recruiting | Atom Therapeutics Co., Ltd | USA |
Registers list studies that are recruiting, about to open, active but closed to enrolment, or enrolling by invitation. The UK and USA registers cover industry-sponsored studies only. Trial titles and statuses are copied from the registry as published.
The same active substance in our other registers, matched by its exact name. Each entry links to the register record it comes from.
13 single-substance products containing Allopurinol on the HPRA medicines list.
| Lead sponsor | Trials |
|---|---|
| Crystalys Therapeutics | 2 |
| Atom Therapeutics Co., Ltd | 1 |
| Register | Trials | Recruiting |
|---|---|---|
| Clinical trials in USA | 3 | 3 |
A trial with sites in more than one country appears in each of those registers.
3 current trials in our USA register name Allopurinol as a drug or biological intervention, as of the registry sync on 25 September 2026. Completed and withdrawn studies are not counted.
Yes. 3 of the 3 trials are recruiting: 3 with sites in USA. Eligibility and site contacts are on each trial's record. Only the study team can confirm whether a patient is eligible.
Crystalys Therapeutics (2) and Atom Therapeutics Co., Ltd (1). The number in brackets is how many trials each organisation leads.
Yes. The HPRA medicines list includes 13 single-substance products containing Allopurinol, for example Allopurinol 100 mg tablets (Accord Healthcare Ireland Ltd.). A licence does not mean a product is currently marketed or reimbursed; see each product's record.
The registers we track list 1 entry for Allopurinol: US FDA: resolved. Shortages are product- and country-specific; check with a pharmacist.
Every trial, status, phase and sponsor on this page is copied from public ClinicalTrials.gov records by a daily sync. Nothing here describes how Allopurinol works or whether it is effective, and it is not medical advice.
Everything on this page is copied from public ClinicalTrials.gov registry records — it is not written from memory, and nothing here describes how Allopurinol works or whether it is effective. Each trial links to its own record so you can check it yourself.
This page is built automatically: a daily sync job reads the registry records behind our country trial registers, collects every trial that lists Allopurinol (or a registered synonym) as a drug or biological intervention, and tabulates the registry fields directly. Placebos and generic comparators are excluded. There is no AI drafting and no per-compound editorial pass, and the page has not been clinically reviewed. The “last verified” date above is the timestamp of that sync, not a review date. Our general editorial approach is described in our editorial standards and corrections policy. The ClinicalTrials.gov data on this page was last retrieved on 25 Sep 2026.