Can a natural supplement soothe an upset stomach?

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

Inclusion Criteria: * Rome IV-based functional dyspepsia- Exclusion Criteria: * Patients with gastrointestinal symptoms requiring immediate drug treatment. * Individuals with a history of hypersecretory gastric disorders like Zollinger-Ellison syndrome. * Individuals who received Helicobacter pylori eradication therapy within 4 weeks prior to the trial. * Individuals who have taken nonsteroidal anti-inflammatory drugs, steroids, antibiotics, aspirin, antithrombotic agents, or acid suppressants within the last month. * Individuals with a history of upper gastrointestinal surgery, stricture, bleeding, or procedures like esophageal dilation or mucosal resection within the last year. * Individuals with gastric ulcers (active or healing), duodenal ulcers (active or healing), reflux esophagitis (LA grade A or higher), or malignant tumors identified within the last 6 months through endoscopy. * Patients with uncontrolled hypertension (resting BP ≥160/100 mmHg). * Patients with uncontrolled diabetes (fasting glucose ≥160 mg/dL). * Individuals with creatinine levels ≥ 2 times the upper limit of normal at the research institution. * Individuals with aspartate aminotransferase or alanine aminotransferase levels ≥ 2 times the upper limit of normal at the research institution. * Alcohol abusers. * Individuals taking medications for psychiatric disorders (except those taking intermittent medication for sleep disorders). * Pregnant or breastfeeding women or those planning to become pregnant during the clinical trial period. * Individuals with allergies to any components of the study foods. * Individuals who participated in or plan to participate in another drug clinical trial within the last month. * Individuals deemed unsuitable for the study by the investigator for other reasons.