Hill's Prescription Diet Gastrointestinal Biome is a veterinary dry dog food formulated for dogs with fibre-responsive digestive conditions. Available in 3.6kg and 12.5kg bags, it requires a veterinary recommendation.

The formula centres on a proprietary prebiotic fibre blend that has been clinically shown to firm loose stools within 24 hours and reduce the likelihood of recurrence. Chicken is the primary protein source. The high-fibre composition supports regular bowel movements and long-term gut microbiome health, addressing both acute symptoms and ongoing digestive stability in affected dogs.

Vets recommend this diet for dogs with chronic loose stools, fibre-responsive colitis, or post-gastrointestinal illness recovery. The clinically tested fibre blend distinguishes it from general digestive support foods.