· Are currently pregnant or breastfeeding.
· Are experiencing severe gut symptoms such as blood in stools, severe or persistent abdominal pain, fever, or unexplained weight loss. These symptoms require medical assessment as soon as possible.
· Have a known allergy or sensitivity to ovine (sheep) collagen or any components of the study supplement.
·Have a known allergy or sensitivity to kiwifruit or kiwifruit-derived products, in addition to ovine (sheep) collagen or any other components of the study supplement
· Have had major gastrointestinal surgery in the past 6 months.
· Have severe chronic illnesses that may affect digestion or nutrient absorption (e.g. advanced liver disease, untreated thyroid disorders).
· Are currently taking medications known to significantly influence gut motility or microbiome composition (e.g., recent antibiotics within the last 4–6 weeks, chronic laxative use, proton pump inhibitors if relevant).