Hill's Prescription Diet Gastrointestinal Biome Digestive/Fiber Care with Chicken Dry Dog food, 16 lbs.

Common questions

Is Hill's Prescription Diet Gastrointestinal Biome Digestive/Fiber Care with Chicken Dry Dog food, 16 lbs. healthy?

Hill's Prescription Diet Gastrointestinal Biome Digestive/Fiber Care with Chicken Dry Dog food, 16 lbs. scores 65/100 on Scout's independent analysis of ingredients, additives, and lab results — a fair-to-good score — solid, with tradeoffs. This dog food contains beneficial ingredients like chicken, cracked pearled barley, and whole grain oats, which provide essential nutrients and support digestive health.

How processed is Hill's Prescription Diet Gastrointestinal Biome Digestive/Fiber Care with Chicken Dry Dog food, 16 lbs.?

Hill's Prescription Diet Gastrointestinal Biome Digestive/Fiber Care with Chicken Dry Dog food, 16 lbs. is NOVA Group 3: Processed Foods.

Which ingredients drive Hill's Prescription Diet Gastrointestinal Biome Digestive/Fiber Care with Chicken Dry Dog food, 16 lbs.'s score?

In Scout's ingredient-by-ingredient analysis, Chicken, Cracked Pearled Barley, Whole Grain Oats count in its favor; Copper Sulfate, Natural Flavors are flagged as ingredients of concern. The full breakdown, with why each one matters, is in the Key ingredients section on this page.

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Hill's Prescription Diet Gastrointestinal Biome Digestive/Fiber Care with Chicken Dry Dog food, 16 lbs.

65 Fair

Analysis updated August 2026 · How Scout scores

$61.99 · 8.5 lb · $7.29 / lb
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At a glance

Beneficial ingredients 6
Harmful ingredients 2
Category Pet Food
Summary

This dog food contains beneficial ingredients like chicken, cracked pearled barley, and whole grain oats, which provide essential nutrients and support digestive health. However, it includes processed components such as corn protein meal and natural flavors, which reduce transparency and quality. The product's processing level limits its score, despite the presence of some high-quality ingredients.

Key ingredients 18

Whole Grain Oats
Very Good

Whole grain oats are a nutritious grain providing fiber, vitamins, and minerals. They are minimally processed, retaining their nutritional benefits. Oats support digestive health and provide sustained energy.

Benefits

Rich in dietary fiber and nutrients that support digestive health and provide sustained energy.

See more about Whole Grain Oats →
Chicken
Good

Chicken is a high-quality source of animal protein, providing essential amino acids for muscle maintenance and growth. It is minimally processed and offers a rich nutrient profile. Compared to plant-based proteins, it provides a more complete amino acid profile.

Benefits

Rich in essential amino acids and nutrients that support muscle health and overall well-being in dogs.

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Cracked Pearled Barley
Good

Cracked pearled barley is a whole grain that provides dietary fiber, supporting digestive health. It is minimally processed, retaining most of its nutritional value. The fiber content aids in maintaining healthy digestion and regular bowel movements.

Benefits

Provides dietary fiber and essential nutrients that support digestive health and regularity.

See more about Cracked Pearled Barley →
L-Tryptophan
Good

L-Tryptophan is an essential amino acid that supports mood regulation and sleep. It is included in pet foods to promote calmness and well-being. As an amino acid, it plays a role in protein synthesis and neurotransmitter production.

Benefits

Supports mood regulation and promotes calmness in pets.

Mixed Tocopherols
Good

Mixed tocopherols are a form of vitamin E, used as a natural preservative and antioxidant. They help extend the shelf life of pet foods by preventing oxidation. Vitamin E also supports immune function and skin health.

Benefits

Acts as a natural preservative and supports immune function and skin health.

See more about Mixed Tocopherols →
Beta-Carotene
Good

Beta-carotene is a precursor to vitamin A, supporting vision and immune health. It is a natural antioxidant found in many fruits and vegetables. As a source of vitamin A, it plays a crucial role in maintaining healthy vision and skin.

Benefits

Supports vision and immune health as a precursor to vitamin A.

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Brewers Rice
Neutral

Brewers rice is a by-product of the rice milling process, providing carbohydrates and some energy. It is a processed ingredient with limited nutritional value compared to whole grains. It serves as a filler ingredient in pet foods.

Risks

May contribute to a less nutrient-dense diet if overused.

Benefits

Provides a source of carbohydrates for energy.

Corn Protein Meal
Neutral

Corn protein meal is a plant-based protein source derived from corn, offering amino acids. It is a processed ingredient with a less complete amino acid profile compared to animal proteins. It is often used to boost protein content in pet foods.

Risks

May not provide a complete amino acid profile compared to animal-based proteins.

Benefits

Contributes to the overall protein content of the diet.

Whole Grain Corn
Neutral

Whole grain corn is a source of carbohydrates and some fiber, supporting energy needs. It is a minimally processed grain but may not be as nutrient-dense as other grains. It is commonly used in pet foods for its energy content.

Risks

Potential allergen for some pets and may contribute to weight gain if overconsumed.

Benefits

Provides carbohydrates for energy and some dietary fiber.

Ground Pecan Shells
Neutral

Ground pecan shells are used as a fiber source in pet foods, aiding in digestion. They are a by-product of pecan processing and provide insoluble fiber. While they contribute to fiber content, they offer limited nutritional value.

Benefits

Contributes to dietary fiber, supporting digestive health.

Chicken Liver Flavor
Neutral

Chicken liver flavor is used to enhance palatability in pet foods. It is a processed flavoring agent derived from chicken liver. While it improves taste, it does not contribute significant nutritional value.

Benefits

Enhances palatability, encouraging consumption.

Ferrous Sulfate
Neutral

Ferrous sulfate is a source of iron, essential for oxygen transport in the blood. It is a processed mineral supplement used to prevent iron deficiency. While beneficial in small amounts, excessive intake can lead to toxicity.

Risks

Excessive intake can lead to iron toxicity.

Benefits

Provides essential iron for healthy blood function.

See more about Ferrous Sulfate →
Zinc Oxide
Neutral

Zinc oxide is a source of zinc, important for immune function and skin health. It is a processed mineral supplement used to ensure adequate zinc intake. While beneficial, excessive zinc can interfere with the absorption of other minerals.

Risks

Excessive zinc intake can interfere with the absorption of other minerals.

Benefits

Supports immune function and skin health.

See more about Zinc Oxide →
Manganous Oxide
Neutral

Manganous oxide is a source of manganese, important for bone health and metabolism. It is a processed mineral supplement used to ensure adequate manganese intake. While beneficial, excessive manganese can lead to toxicity.

Risks

Excessive intake can lead to manganese toxicity.

Benefits

Supports bone health and metabolic processes.

Calcium Iodate
Neutral

Calcium iodate is a source of iodine, essential for thyroid function. It is a processed mineral supplement used to prevent iodine deficiency. While necessary, excessive iodine can disrupt thyroid function.

Risks

Excessive intake can disrupt thyroid function.

Benefits

Supports thyroid health and hormone production.

Sodium Selenite
Neutral

Sodium selenite is a source of selenium, important for antioxidant defense and immune function. It is a processed mineral supplement used to ensure adequate selenium intake. While beneficial, excessive selenium can be toxic.

Risks

Excessive intake can lead to selenium toxicity.

Benefits

Supports antioxidant defense and immune function.

Copper Sulfate
Bad

Processed additive flagged under Scout's ingredient doctrine.

Risks

Excessive intake can lead to copper toxicity.

Benefits

Supports enzymatic processes and overall health.

See more about Copper Sulfate →
Natural Flavors
Bad

Natural flavors are used to enhance taste but lack transparency in their composition. They are processed flavoring agents that may contain various additives. The lack of specificity can be concerning for those monitoring ingredient quality.

Risks

Potential allergen and may contain undisclosed additives.

Benefits

Enhances palatability, encouraging consumption.

See more about Natural Flavors →

Processing

Group 3 · Processed

Processed Foods

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