Probiotics and Non-Organic Gastrointestinal Improvement

Inclusion Criteria: * Voluntarily sign the informed consent form and agree to participate in the study. * Ability to complete the study according to the trial protocol requirements. * Aged 18-65 years. * Clinical diagnosis of non-organic gastrointestinal dysfunction (e.g., functional dyspepsia, functional constipation) without other serious organic diseases. Exclusion Criteria: * Use of drugs affecting intestinal flora (antibiotics, probiotics, intestinal mucosal protectants, herbal medicines, etc.) for \>1 week within 1 month prior to screening. * Short-term use of products with functions similar to the investigational product, which may interfere with result interpretation. * Antibiotic use during the study period. * History of severe systemic diseases or malignancies. * Allergy to any ingredient in the compound probiotic freeze-dried powder used in the trial. * Pregnancy, lactation, or plans for pregnancy in the near future. * Inability to participate due to personal reasons. * Other conditions deemed unsuitable by the investigators.