Evidence-based complementary medicines built around bromelain and other GRAS ingredients to modulate the gastrointestinal lining and microbiome with targeted GI absorption, positioned as adjunct therapy for human disorders such as IBS and IBD. Veterinary feed- and water-formulated products for on-farm control of diarrhoea in pigs and poultry, reducing post-weaning scours with efficacy comparable to common antimicrobial agents.