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Healthy volunteers needed to test drug interaction

NCT ID NCT07330531

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looks at how the antibiotic rifampin changes the way the body processes anaprazole, a stomach acid reducer. It involves 24 healthy adults aged 18-45. The goal is to measure drug levels and check for side effects when both drugs are taken together.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 4

Runs after approval, following long-term safety and how well the treatment works in everyday use.

Participants

About 24 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Jan 2026

An estimate. Start dates often move.

Expected to finish

Jul 2027

An estimate. End dates often move.

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 45 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Healthy male or female subjects aged 18-45 years (including boundary values); 2. Male weight ≥50kg, female weight ≥45kg, body mass index (BMI) in the range of 19-28 kg/m2 (including boundary value); 3. No mental abnormalities, cardiovascular system, nervous system, respiratory system, digestive system, urinary system, history of systemic, endocrine and metabolic abnormalities; 4. The subjects agreed to use effective contraception and had no plans to donate sperm or eggs from the time of trial screening until 6 months after the last dose; 5. The subjects should be able to communicate well with the researchers, understand and comply with the requirements of the study, and understand and sign the informed consent. Exclusion Criteria: 1. Subjects with a specific allergic history (e.g., urticaria, eczema), an allergic constitution (e.g., allergy to two or more drugs, foods such as milk or pollen), a known allergy to anaprazole sodium or similar drugs, or an allergy to rifampin or its similar antibacterial drugs; 2. During screening, there are clinical significant abnormal results in physical examination, laboratory tests, 12-lead electrocardiogram, chest x-ray examination or abdomen B ultrasound examination; 3. Subjects with a history of drug abuse (including regular use of sedatives, hypnotics, or other addictive substances) within 12 months before screening; or who have used illicit drugs; or test positive in urine drug screening; 4. Subjects who smoked more than 5 cigarettes per day within the 3 months before screening, or who could not stop using any tobacco products during the study; 5. Alcohol breath test positive o regular drinkers within 6 months before screening, drinking more than 14 units per week \[1 unit is equivalent to 350 mL of beer (5%), 45 mL of spirits (40%) or 150 mL of wine (12%)\]; 6. Use any prescription drugs or traditional Chinese medicine within 4 weeks prior to the first dose, or use any OTC drugs or dietary supplements within 2 weeks before the first dose; 7. Participated in other clinical trials and used investigational drugs within 3 months before screening; 8. Those who received live vaccine within 2 weeks before the first dose, or planned to receive live vaccine during the study or within 7 days after the study was completed; 9. Blood donation (including component blood donation) or blood loss of 400 mL within 3 months before screening, or blood transfusion; Blood donation (including component blood donation) or blood loss of 200 mL within 1 month before screening; 10. Have a history of major disease, major surgery, or significant trauma within the 3 months prior to screening, or who plan to undergo surgery during the study; 11. Subjects with dysphagia or a history of gastrointestinal disorders that may affect drug absorption or cause clinically significant symptoms (e.g., gastrectomy or small bowel resection, atrophic gastritis, chronic intestinal diseases, gastrointestinal bleeding, obstruction, etc.), or those with acute gastrointestinal conditions (such as nausea, vomiting, diarrhea, abdominal pain, constipation, etc.) within the week prior to screening; 12. Female subjects during pregnancy and lactation and female subjects of reproductive age who cannot take contraception as required; 13. HBsAg, HCV Ab, Treponema pallidum antibody, HIV Ab test results are positive; 14. Those who have special dietary requirements (including lactose intolerance) and are unable to comply with the provided diet and corresponding regulations; 15. Those who have consumed a special diet (including pitaya, mango, pomelo, and/or xanthine-containing foods, chocolate) and/or have regularly consumed excessive amounts of tea, coffee, grapefruit/grapefruit juice, and/or caffeinated beverages (averaging more than 8 cups per day, with each cup being 200 mL) within the 2 weeks prior to the first dose, thereby potentially affecting drug absorption, distribution, metabolism, or excretion; 16. Use of any drug that inhibits or induces hepatic metabolism within 30 days prior to the first dose: Inducer such as barbiturates, carbamazepine, phenytoin sodium, rifamequine; Inhibitors such as cimetidine, cyclosporine, macrolides, verapamil, quinolones, pyrroles, etc.); 17. Those who cannot tolerate blood collection by venipuncture or whose blood vessels are in poor condition; 18. Other subjects deemed unsuitable to participate in the study by the investigator.

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As listed by the trial registrant

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How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

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  3. A doctor treating you

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Contacts and locations

Locations

  • Jinan Central Hospital of Shandong Province

    Jinan, Shangdong, 250013, China

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