Impact of B. Adolescentis iVS-1 Probiotic on Gastrointestinal Outcomes

Inclusion Criteria: * Age between 18-75 years old, inclusive. * Has self-reported moderate to severe gastrointestinal or digestive symptoms, such as abdominal pain, bloating, flatulence, constipation, or diarrhea. * Has a Gastrointestinal Symptom Rating Scale (GSRS) score between 4-7, not driven primarily by symptoms of reflux (whereby reflux does not make up more than 60% of GSRS total score). * Willingness to refrain from taking probiotics or prebiotics during the study period. * Interested in understanding more about their gut health and the use probiotic products. * If taking any OTC or prescription medications for anxiety (e.g. magnesium, anticholinergics, Buspirone, Tricyclics, MAOIs,) or other class of medication for anxiety, must be on a stable dose for at least 4 weeks prior to randomization and throughout the course of the study. * If using any cannabis-containing products, must be on a stable dose regimen for at least 4 weeks prior to randomization and throughout the course of the study. * If using any nicotine-containing products, must be on a stable regimen for at least 4 weeks prior to randomization and throughout the course of the study. * In good general health at the time of screening (Investigator discretion). * Able to read and understand English. * Able to read, understand, and provide informed consent. * Able to use a personal smartphone device and download Chloe by People Science. * Able to receive shipment of the product at an address within the United States. * Able to complete study assessments over the course of up to 17 weeks. Exclusion Criteria: * Do not have a personal smartphone, internet access, or unwilling to download Chloe. * Currently on a carnivore diet, raw food diet, fruitarian, liquid diet (does not include vegans or vegetarians). * Concomitant Therapies: 1. Participants receiving any investigational therapies or treatments within 30 days prior to randomization. 2. Participants currently taking or have taken antibiotics, probiotic, or prebiotic supplements within the past 4 weeks prior to randomization. 3. Participants using immunosuppressive medications, systemic steroids, antifungals or other medications known to significantly impact gastrointestinal function or microbiota. * Other Illnesses or Conditions: Participants who have the following comorbidities or gastrointestinal illnesses are excluded: 1. Participants with a clinical diagnosis of any gastrointestinal illness, including but not limited to: * Inflammatory bowel disease (e.g., Crohn's disease, ulcerative colitis) * Gastroesophageal reflux disease (GERD) * Gastric or duodenal ulcers * Celiac disease * Diverticular disease * Chronic pancreatitis * Gastroparesis * Severe liver disease (e.g., cirrhosis, hepatitis, NAFLD acceptable) * Gallbladder disease (e.g., cholecystitis, cholelithiasis) * Gastrointestinal cancer (Colorectal, Intestinal, Stomach, Liver, Gallbladder) 2. Participants with a known or suspected gastrointestinal infection, such as: * Clostridium difficile infection * Helicobacter pylori infection * Parasitic infections (e.g., Giardia, Cryptosporidium) 3. Participants with a history of gastrointestinal surgery, excluding appendectomy and cholecystectomy. 4. Participants with a history of gastrointestinal bleeding or perforation. 5. Currently diagnosed with Alcohol Use Disorder and/or Substance Use Disorder. 6. Currently pregnant, planning to become pregnant in the next 1 month, or breastfeeding. 7. Any underlying medical conditions or comorbidities that may confound the assessment of digestive symptoms or the evaluation of the study outcomes. 8. Have a significant illness, disease or condition which, in the opinion of the principal investigator, may impact their ability to participate in the study or impact the study outcomes. * Known hypersensitivity or previous allergic reaction to Bifidobacterium adolescentis, microcrystalline cellulose, the capsule material (hydroxypropylmethylcellulose), magnesium stearate and silicon dioxide. * Are unlikely for any reason to be able to comply with the trial or considered unsuited for participation in the study by the Principal Investigator.