Evaluation of RSB11-HI Postbiotic Supplementation for Supporting Weight Management, Metabolic Wellness, and Quality of Life in Healthy Adults

Inclusion Criteria: * Male or female, 18 to 55 years of age. * Body Mass Index (BMI) between 23 and 32 kg/m² at screening. * Able and willing to provide electronic informed consent. * Willing and able to comply with all study procedures and scheduled assessments. * Willing to maintain usual dietary habits and physical activity throughout the study period. * Access to a smartphone, tablet, or computer with reliable internet connectivity to complete remote study assessments. * Willing to refrain from initiating new dietary supplements, structured weight management programs, or significant lifestyle modifications intended to influence study outcomes during study participation. Exclusion Criteria: * Participation in another interventional clinical study within 30 days prior to screening. * Current use of prescription medications intended for weight management. * Current use of probiotic or postbiotic supplements that cannot be discontinued at least 4 weeks prior to enrollment. * Antibiotic use within 4 weeks prior to screening. * Pregnancy, planned pregnancy during the study period, or breastfeeding. * Known allergy or hypersensitivity to any component of the investigational product or placebo. * History of any gastrointestinal condition, metabolic disorder, or other clinically significant medical condition that, in the opinion of the investigator, could interfere with study participation or interpretation of study results. * Any physical, psychological, or behavioral condition that, in the opinion of the investigator, would make participation unsafe or compromise compliance with the study protocol.