Could A2 milk soothe your tummy troubles?
NCT ID NCT06870097
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at whether A2 milk can improve digestion, reduce inflammation, and boost good gut bacteria in people who often feel bloated, gassy, or have belly pain after drinking regular milk. About 100 adults aged 19 to 65 with these symptoms will try A2 milk and a placebo in a random order, without knowing which they are getting. The goal is to see if A2 milk eases digestive discomfort and supports gut health.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 100 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Feb 2025
- Expected to finish
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Sep 2027
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
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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19 to 65 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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: * Between 19 to 65 years of age * Participants who are experiencing digestive symptoms abdominal bloating, abdominal pain, borborygmus, fecal urgency, flatulence, diarrhea, nausea) following milk consumption on Visit 1 with a total score on the digestive discomfort symptom survey being 7 point or more for the following 5 items: abdominal pain, borborygmus , flatulence, diarrhea, nausea. (Individuals who have indicated scored 7 or more on any one item in the symptom will be excluded) * Those who have agreed to participate and given written consent through the Informed Consent Form prior to the study Exclusion Criteria: * Currently undergoing treatment for severe cardiovascular, immune, respiratory, gastrointestinal/hepatic and biliary, renal an durinary, neurological, musculoskeletal, mental, infectious, metabolic diseases, and malignancies * Diagnosed with or has a history of gastrointestinal diseases (irritable bowel syndrome, colitis, ulcerative colitis, abdominal diseases etc.), or has undergone gastrointestinal surgery * History of bowel obstruction * Hospitalized within the last 3 months of Visit 1 * Has taken the following drugs or foods within 3 months of visit 1 ① Drugs that affect body weight {obesity drugs (appetite suppressants, fat absorption inhibitors, Glucagon-like peptide-1 (GLP-1) recept or agonists etc.) etc.), diabetes drugs, etc.} ② Psychiatric drugs such as antidepressants and antipsychotics ③ Diuretics ④ Systemic steroid preparations and hormonal preparations (including oral contraceptives and thyroid hormone preparations * Has taken immunosuppressive drugs or anti inflammatory drugs within the last month (30 days) of Visit 1 * Administered systemic antibiotics, systemic antibacterial agents, colonics, bowel cleansers, probiotics, prebiotics, antioxidant related health functional foods (Coenzyme Q10, red ginseng, etc.), and glutathione containing products within 2 weeks of visit 1 (however, vitamin preparations can be used together if taken without changing dosage or medication for more than 3 months * Has taken prokinetics (Serotonin type 4 (5-HT4) Agonist, D2 Antagonists, Cholinergic Agonists etc.), laxatives {fiber supplements (Psyllium, Methylce llulose etc.), stool softeners, osmotic laxatives (Sorbitol, Lactulose etc.), stimulant laxatives (Bisacodyl , Anthraquinone etc.)} within 1 week of visit 1 * History of alcohol abuse or who chronically consume alcohol\* \* Drinking alcohol equivalent to an average of 40 g or more per day (280 g/week) for men and more than 20 g of alcohol per day (140 g/we ek) for women. * Pregnant, breastfeeding, or planning to become pregnant during the study period * Participated in another interventional clinical trial (including human trials) within the last 3 months of Visit 1, or planning to participate in another interventional clinical trial (including human trials) after the start of this study * Allergic to dairy products (bloody stool, muscle/joint pain, headache, dizziness, coma, short term memory impairment, oral ulcer, cardiac arrhythmia, sore throat, increased frequency of urination, acne, depression) * Individuals deemed inappropriate for the study by the investigator
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Seoul National University Bundang Hospital
Seongnam-si, South Korea, 13620, South Korea
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