







Roll over image to zoom in
Hill's Prescription Diet
Gastrointestinal Biome Dry Dog Food
AVAILABLE SIZES
8lb, 16lb, 27.5lb
Hill’s Prescription Diet Gastrointestinal Biome is a high-fiber dry dog food clinically shown to help firm loose stool in 24 hours and reduce risk of recurrence. Made with ActivBiome+ Ingredient Technology to rapidly activate the gut microbiome and help manage complex GI issues.
PRIMARY PRODUCT
RECOMMENDATION
Digestive Care
FLAVOR
with Chicken
BREED SIZE
Small Breed, Medium Breed, Large Breed
FOOD FORM
Dry Food

#1 VETERINARIAN
RECOMMENDED

100% SATISFACTION GUARANTEE
At Hill’s, we’re dedicated to making foods your pet will love. If you’re not satisfied for any reason with a product purchased from one of our authorized sellers, simply return the unused portion to the place of purchase for your money back or a replacement product. Additional terms may apply. Please click here for full details.
Your dog’s digestive health can be negatively affected by many things and when your dog has digestive upset, it’s a thoroughly unpleasant experience for everyone involved. The good news is that you can help your dog feel better with a food that revolutionizes the way to approach fiber-responsive GI issues by putting microbiome health – the unique gut ecosystem of your pet - at the forefront of GI care.
Hill’s nutritionists and veterinarians formulated Prescription Diet Gastrointestinal Biome nutrition with ActivBiome+, a proprietary ingredient technology, clinically shown to help firm loose stool in 24 hours and reduce risk of recurrence.
How it helps:
Hill's Prescription Diet Gastrointestinal Biome is clinically shown to help firm loose stool in 24 hours and reduce risk of recurrence.
- Works quickly to activate the gut microbiome and promote healthy stool
- Promotes activity of beneficial gut bacteria to maintain digestive health
- Helps limit recurrence of digestive upsets
How it works:
- Proprietary ActivBiome+ Technology nourishes your pet's microbiome
- Unique blend of prebiotic fibers
- Stimulates the microbiome to produce beneficial postbiotics
Additional info:
Hill's Prescription Diet Gastrointestinal Biome Dry Dog Food provides all the nutrition your dog needs. Please consult your veterinarian for further information on how our Prescription Diet foods can help your dog to continue to enjoy a happy and active life.

ActivBiome+ ingredient technology is a proprietary blend of prebiotics shown to rapidly activate the gut microbiome to support digestive health and well-being

Formulated to promote a urinary environment that reduces the risk of developing struvite & calcium oxalate crystals

Made in the USA with global ingredients you can trust

Proud to have helped 11 MILLION SHELTER PETS find a forever home & counting
INGREDIENTS: Chicken, Cracked Pearled Barley, Brewers Rice, Corn Gluten Meal, Whole Grain Corn, Whole Grain Oats, Ground Pecan Shells, Chicken Liver Flavor, Chicken Fat, Powdered Cellulose, Flaxseed, Dried Beet Pulp, Pork Liver Flavor, Dried Citrus Pulp, Soybean Oil,Fish Oil, Calcium Carbonate, Dicalcium Phosphate, Lactic Acid, Potassium Chloride, Pumpkin, Pressed Cranberries, L-Lysine, Iodized Salt, Choline Chloride, vitamins (Vitamin E Supplement, L-Ascorbyl-2-Polyphosphate (source of Vitamin C), Thiamine Mononitrate, Niacin Supplement, Calcium Pantothenate, Vitamin A Supplement, Riboflavin Supplement, Pyridoxine Hydrochloride, Vitamin B12 Supplement, Biotin, Folic Acid, Vitamin D3 Supplement), Ginger, Psyllium Seed Husk, L-Threonine, Taurine, L-Tryptophan, minerals (Ferrous Sulfate, Zinc Oxide, Copper Sulfate, Manganous Oxide, Calcium Iodate, Sodium Selenite), Mixed Tocopherols for freshness, Natural Flavors, Beta-Carotene.
Ask your veterinarian for specific feeding instructions for your pet. This is only a guide. Grams are the most accurate form of measurement; cups are estimated from grams.
For best results:
- Gradually transition to this new food for 7 days or more
- Exclusively feed the recommended Prescription Diet dry and wet foods
- Keep fresh water available at all times
- Have your veterinarian monitor your pet's condition
- To prevent suffocation, keep the packaging out of the reach of pets & children
Adult maintenance
Weight of Dog — lbs (kgs) | Amount per Day - cups (grams) |
5 (2,3) | 5/8 (60) |
10 (4,5) | 1 (100) |
15 (6,8) | 1 3/8 (135) |
20 (9,1) | 1 3/4 (175) |
30 (14) | 2 1/3 (230) |
40 (18) | 3 (295) |
50 (23) | 3 1/2 (345) |
60 (27) | 4 (395) |
70 (32) | 4 1/2 (445) |
80 (36) | 5 (495) |
100 (45) | 6 (595) |
120 (54) | 6 3/4 (670) |
Animal feeding tests using AAFCO procedures substantiate that Hill's Prescription Diet Gastrointestinal Biome Dog Food provides complete and balanced nutrition for maintenance of adult dogs.

Days 1-2

Days 3-4

Days 5-6

Day 7

Days 1-2

Days 3-4

Days 5-6

Day 7

Days 1-2

Days 3-4

Days 5-6

Day 7
3327 kcal/kg (330 kcal/cup†)
Nutrient | Dry Matter1 % |
Protein | 21 % |
Fat | 12.6 % |
Carbohydrate / NFE | 51.7 % |
Crude Fiber | 7.4 % |
Calcium | 1.16 % |
Phosphorus | 0.67 % |
Potassium | 0.99 % |
Sodium | 0.39 % |
Magnesium | 0.099 % |
Vitamin C | 168 ppm |
Vitamin E | 740 IU/kg |
Total Omega-3 FA | 1.42 % |
Total Omega-6 FA | 3.48 % |
References
1The nutrient in the product after moisture is removed. It is used to make direct comparisons of nutrient profiles with differing moisture contents.
†An eight fluid oz. measuring cup of Gastrointestinal Biome Dry Dog Food contains 3.5 oz. by weight.
Dog SKUs:
- 4965
- 7048
- 2975
- 605142
- 10451
- 10450
- 605141
- 7038
- 7040
- 4966
- 10763
- 10765
- 10449
- 10452
- 7057
- 4968
- 4969
- 7015
- 7016
- 10509
- 2697
- 7009
- 7006
- 7007
- 7011
Cat SKUs:
- 604707
- 10806
- 6173
- 10443
- 10448
- 603517
- 10802
- 6610
- 10810
- 6612
- 6111
- 10766
- 10768
- 10769
- 10767
- 7400
- 10446
- 10444
- 604708
- 2974
- 10643
- 604706
- 4531
- 604693
- 4450
- 604202
- 604351
- 4281
- 3404
- 10083
- 10082
Prescription Diet®
Groundbreaking nutrition that can save the lives of sick pets and comfort the people who care for them.