NCT07613138

Brief Summary

The goal of this clinical trial is to learn whether tart cherry citrate effervescent tablets can lower uric acid levels in people with asymptomatic hyperuricemia (high uric acid levels without gout symptoms). The main question it aims to answer is: Does taking tart cherry citrate effervescent tablets lower uric acid levels more effectively than taking a placebo (inactive) tablet, when both groups also receive lifestyle guidance? Researchers will compare two groups of participants. Both groups will receive lifestyle guidance (advice on diet and exercise). In addition:

  • One group will take the tart cherry citrate effervescent tablets.
  • The other group will take a placebo effervescent tablet (looks and tastes the same but contains no active ingredient). The study will last 24 weeks. Participants will:
  • Take the assigned effervescent tablet twice daily for 24 weeks
  • Follow lifestyle guidance for diet and exercise
  • Attend scheduled clinic visits for checkups and tests
  • Provide blood and urine samples for testing

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
196

participants targeted

Target at P75+ for not_applicable

Timeline
21mo left

Started Jun 2026

Typical duration for not_applicable

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress8%
Jun 2026May 2028

First Submitted

Initial submission to the registry

April 22, 2026

Completed
1 month until next milestone

First Posted

Study publicly available on registry

May 29, 2026

Completed
6 days until next milestone

Study Start

First participant enrolled

June 4, 2026

Completed
1.6 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 31, 2027

Expected
4 months until next milestone

Study Completion

Last participant's last visit for all outcomes

May 1, 2028

Last Updated

June 17, 2026

Status Verified

June 1, 2026

Enrollment Period

1.6 years

First QC Date

April 22, 2026

Last Update Submit

June 16, 2026

Conditions

Keywords

hyperuricemiauric acidtart cherrycitrate

Outcome Measures

Primary Outcomes (1)

  • Difference in serum urate (sUA) levels between groups at week 24

    Serum uric acid measured in μmol/L from fasting blood sample.

    At week 24

Secondary Outcomes (26)

  • Difference in serum urate (sUA) levels between groups at each visit

    At week 12 and week 24

  • Changes in serum urate (sUA) levels within the experimental group before and after intervention

    Baseline to Week 24

  • Difference in morning urine pH between groups at week 24

    At week 24

  • Differences in urine pH (morning urine) between groups at each visit

    At baseline, week 12, and week 24

  • Changes in 24-hour urinary uric acid excretion (UUE) within groups before and after intervention

    At baseline and week 24

  • +21 more secondary outcomes

Study Arms (2)

Tart Cherry Citrate Effervescent Tablet

EXPERIMENTAL

Lifestyle guidance + tart cherry citrate effervescent tablet 4.0 g twice daily

Dietary Supplement: tart cherry citrate effervescent table

Placebo Effervescent Tablet

PLACEBO COMPARATOR

Matching placebo effervescent tablet identical in appearance, taste, and preparation to the tart cherry citrate effervescent tablet but containing no active ingredients. Participants take 4.0 g (one tablet) dissolved in 200-250 mL of water twice daily (morning and evening), regardless of meals. Daily total water intake is controlled at 2000-2500 mL. The tablet is taken as an adjunct to lifestyle guidance.

Dietary Supplement: Placebo Control Group

Interventions

Placebo Control GroupDIETARY_SUPPLEMENT

Matching placebo effervescent tablet identical in appearance, taste, and preparation to the tart cherry citrate effervescent tablet but containing no active ingredients. Participants take 4.0 g (one tablet) dissolved in 200-250 mL of water twice daily (morning and evening), regardless of meals. Daily total water intake is controlled at 2000-2500 mL. The tablet is taken as an adjunct to lifestyle guidance.

Placebo Effervescent Tablet

Each effervescent tablet contains tart cherry extract and citrate. Participants take 4.0 g (one tablet) dissolved in 200-250 mL of water twice daily (morning and evening), regardless of meals. Daily total water intake is controlled at 2000-2500 mL. The tablet is taken as an adjunct to lifestyle guidance.

Tart Cherry Citrate Effervescent Tablet

Eligibility Criteria

Age18 Years - 65 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Aged 18 to 65 years, regardless of sex;
  • Meet the diagnostic criteria for primary hyperuricemia, with serum urate levels between 420 μmol/L and 540 μmol/L (for those without comorbidities) or between 420 μmol/L and 480 μmol/L (for those with at least one of the following comorbidities: hypertension, dyslipidemia, diabetes mellitus, obesity, stroke, coronary heart disease, heart failure, or CKD stage ≥2);
  • Participants with asymptomatic hyperuricemia who have not previously received urate-lowering therapy and have no history of acute gout flares;
  • Voluntarily participate in the study and provide written informed consent.

You may not qualify if:

  • Known allergy to any of the study medications, food products, or their components; current allergies; or known hypersensitivity;
  • Active liver disease or cirrhosis, or liver dysfunction with alanine aminotransferase (ALT) or aspartate aminotransferase (AST) levels \>2 times the upper limit of normal (ULN);
  • Acute infection or active gastrointestinal ulcers;
  • History of thyroid dysfunction;
  • Estimated glomerular filtration rate (eGFR) \<60 mL/min;
  • Severe cardiac diseases, such as decompensated heart failure (NYHA class III or IV), unstable angina, or a history of myocardial infarction within the previous 12 months;
  • Renal cysts, medullary sponge kidney, or other obstructive nephropathies;
  • Rheumatoid arthritis requiring treatment or arthropathies due to other causes;
  • Current use of medications that affect urate levels, including febuxostat, allopurinol, benzbromarone, probenecid, azathioprine, 6-mercaptopurine, cyclosporine, cyclophosphamide, pyrazinamide, sulfamethoxazole, trimethoprim, theophylline, thiazide diuretics, aspirin (\>325 mg/day) or other salicylates, losartan, or intravenous colchicine;
  • Secondary hyperuricemia due to hematologic disorders, renal diseases, or radiotherapy/chemotherapy for malignancies;
  • Brain disorders with impaired judgment, or mental disorders that preclude cooperation;
  • Alcohol or substance abuse;
  • Participation in another clinical trial within the three months prior to screening;
  • Malignancy or active tuberculosis;
  • Presence of other concurrent conditions that, in the investigator's judgment, may affect the efficacy evaluation or result in poor compliance;
  • +2 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Xiamen University Affiliated Xiang'an Hospital

Xiamen, Fujian, China

RECRUITING

Related Publications (2)

  • Xue X, Liu Z, Li X, Lu J, Wang C, Wang X, Ren W, Sun R, Jia Z, Ji X, Chen Y, He Y, Ji A, Sun W, Zhang H, Merriman TR, Li C, Cui L. The efficacy and safety of citrate mixture vs sodium bicarbonate on urine alkalization in Chinese primary gout patients with benzbromarone: a prospective, randomized controlled study. Rheumatology (Oxford). 2021 Jun 18;60(6):2661-2671. doi: 10.1093/rheumatology/keaa668.

  • Wang C, Sun W, Dalbeth N, Wang Z, Wang X, Ji X, Xue X, Han L, Cui L, Li X, Liu Z, Ji A, He Y, Sun M, Li C. Efficacy and safety of tart cherry supplementary citrate mixture on gout patients: a prospective, randomized, controlled study. Arthritis Res Ther. 2023 Sep 7;25(1):164. doi: 10.1186/s13075-023-03152-1.

MeSH Terms

Conditions

Hyperuricemia

Condition Hierarchy (Ancestors)

Pathologic ProcessesPathological Conditions, Signs and Symptoms

Central Study Contacts

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

April 22, 2026

First Posted

May 29, 2026

Study Start

June 4, 2026

Primary Completion (Estimated)

December 31, 2027

Study Completion (Estimated)

May 1, 2028

Last Updated

June 17, 2026

Record last verified: 2026-06

Data Sharing

IPD Sharing
Will not share

Individual participant data will not be shared because the informed consent form did not include provisions for data sharing beyond the primary study objectives, and the sponsor does not have an established data sharing platform.

Locations