Eligibility Criteria:
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.