An Open-Label, Two-Arm Pilot Study of the Tolerability, Consumer Acceptability, and Exploratory Well-Being Outcomes of a Multi-Ingredient Protein Formula in Two Flavors in Healthy Adults

Inclusion Criteria:

* Adults aged 21-65 years, inclusive
* Generally healthy, as determined by self-reported medical history and investigator judgment
* Body mass index 18.5-34.9 kg/m² (as operationally verified)
* Willing and able to consume the test product once daily for 15 days and to complete scheduled questionnaires
* Can read and write English.
* Provide voluntary, written, informed consent to participate in the study.
* Agree to provide a valid cell phone number and are willing to receive communications through text.
* Willing to complete questionnaires, records, and diaries associated with the study.
* Willing to not begin taking any new supplements during the study and continue taking any supplements they are currently using regularly

Exclusion Criteria:

* Known allergy or intolerance to any study-product component, including yeast-derived protein, bovine collagen, creatine, the prebiotic fiber blend, allulose, or Reb M.
* Women who are pregnant, breastfeeding, or planning to become pregnant or start breastfeeding during the trial
* Clinically significant gastrointestinal disorder that could confound tolerability assessment (e.g., inflammatory bowel disease, symptomatic irritable bowel syndrome, prior major GI surgery), per investigator judgment
* Known renal impairment or condition for which supplemental creatine is not advised
* Serious or unstable medical condition, or any condition that in the investigator's judgment would compromise participant safety or data integrity
* Participation in another interventional study within 30 days prior to enrollment
* Having any of the following conditions: Psychiatric conditions, neurologic disorders, endocrine disorders, cancer
* Having had a significant cardiovascular event in the past 6 months
* Taking MAO inhibitors, SSRIs, or any other psychiatric or neurological medicines
* On immunosuppressive therapy
* Having had surgery within the past 6 weeks or upcoming planned surgery in the next few months
* Adults lacking capacity to consent