New obesity drug GZR18 under microscope: how does it interact with common meds?
NCT ID NCT07128888
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This early-stage study tests GZR18, an injectable drug for obesity or overweight, in 60 Chinese adults. Researchers want to see how it affects stomach emptying and whether it changes how the body processes digoxin (heart medication), rosuvastatin (cholesterol drug), and warfarin (blood thinner). Participants receive GZR18 for 16 weeks, then take the other drugs for 6 weeks while being monitored. The goal is to understand safety and dosing, not to treat obesity directly.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- GZR18 injection
- What this could lead to
- If successful, this study could help determine safe use of GZR18 with common medications like heart drugs, statins, and blood thinners in people with obesity.
- What could go wrong
- This is an early Phase 1 trial with only 60 participants, so results may not apply to everyone. The main goal is safety and drug interaction, not weight loss or disease treatment.
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
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Phase 1
The first testing in people. Mainly checks safety and dose, usually in a small group.
- Participants
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About 60 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Nov 2025
- Expected to finish
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Jul 2026
An estimate. End dates often move.
- Lead sponsor
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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
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18 to 50 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide 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.Obese Chinese subjects, who voluntarily sign the Informed Consent Form (ICF), can receive SC injection, fully understand the content, process and possible adverse reactions of the trial, and are able to follow the regulations on contraindications and restrictions specified in this protocol. 2\. Male or female, 18 to 50 years of age at signing the ICF (both inclusive). 3\. Body mass index (BMI) within 26-35 kg/m2 (both ends inclusive) at screening. 4\. No abnormality or not clinically significant abnormality as judged by the investigator in physical examination, vital signs, routine laboratory tests (hematology, blood chemistry, urinalysis, thyroid function and coagulation), 12-lead ECG, ultrasonography of liver, gallbladder, pancreas, and spleen + both kidneys, chest imaging examination and other results. (abnormal indicators related to obesity or overweight, and the investigator assesses that they have no impact on this study, they can be enrolled) 5\. Subjects of childbearing potential with no birth plan from the signing of the ICF to 8 weeks after the last dose, willingness to take effective contraceptive measures, and no plan for sperm or ovum donation. Females of childbearing potential must not be lactating and must have negative results for blood pregnancy test at screening (including D-1). Exclusion Criteria: * 1.Subjects with a previous or existing history of heart, liver, kidney, gastrointestinal tract, respiratory system, nervous system, psychiatric disorders, endocrine diseases (except obesity), malignant tumors and other diseases that are judged by the investigator to have an impact on the evaluation of the results of this study. 2\. History or existing diseases that increase the risk of subjects, such as hypoglycemia, acute or chronic pancreatitis, pancreatic injury, history of symptomatic gallbladder disease; cholelithiasis with high risk of acute biliary pancreatitis at screening (e.g., silt-like lithiasis, gallbladder or bile duct stone ≤ 5 mm in diameter),newly diagnosed cholecystitis at screening. 3\. Subjects with previous or existing clinically significant digestive system diseases who are judged unsuitable for the study by the investigator, such as history of active peptic ulcer or hemorrhage, inflammatory bowel disease, abnormal gastric emptying (such as gastric paresis or pyloric stenosis, gastric outlet obstruction), continuous use of drugs affecting gastrointestinal motility for ≥ 1 week (including but not limited to domperidone, mosapride, macrolides), and acute hemorrhoidal attacks within the past three months. 4\. History or family history of previous or existing medullary thyroid carcinoma, multiple endocrine neoplasia type 2. 5\. Subjects who have used any drugs that alter the activity of drug metabolizing enzymes or transporters within 4 weeks prior to screening, or subjects with acute diseases or concomitant medication from the screening period to before administration of the investigational medicinal product (IMP). 6\. Subjects with severe infection or unexplained infection within 4 weeks before screening. 7\. Major surgery within 6 months prior to screening, or scheduled surgery or hospitalization during the study. 8\. Subjects with allergic constitution prior to screening, or a history of bronchial asthma, eczema and other allergic diseases (except mild seasonal allergy), or a history of severe food allergy (such as laryngeal edema, shock), or known allergy to any ingredient in investigational medicinal products (IMPs) \[GLP-1 receptor (GLP-1R) agonist, paracetamol, digoxin, rosuvastatin, warfarin and their excipients\]. 9\. Use of any prescription drugs, over-the-counter drugs or Chinese herbal medicines within 2 weeks prior to screening; or use of any GLP-1R agonists or drugs with the same mechanism of action to GLP-1R agonists \[such as GLP-1R/glucagon receptor (GCGR) agonists or gastric inhibitory polypeptide receptor (GIPR)/GLP-1R agonists or GIPR/GLP-1R/GCGR agonists\] within 6 months prior to screening; or use of any weight loss drugs within 6 months prior to screening. 10\. Subjects who have been vaccinated within 1 month before screening or are scheduled for vaccination during the study.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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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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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Study site 01
RECRUITINGBeijing, China
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