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Hill's Science Diet Adult 1-5 Large Breed Dry Dog Food 45 lb

Item Weight: 45 pounds
Target Species: Dog
Flavor: Chicken & Barley
Special Ingredients: Chicken, Chicken Fat, Chicken Meal, Cracked Pearled Barley, Whole Grain Wheat, Whole Grain Corn, Flaxseed, Apples, Broccoli, Carrots, Cranberries, Green Peas

Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A bulk large-breed formula worth it mainly for households that go through food quickly and want the joint and coat support ingredients Hill's lists.

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ASIN: B09RPJLZ9CCategory: Dry Pet Foods

Overview

A chicken and barley dry food from Hill's Science Diet formulated for large breed adult dogs aged 1-5, sold in a 45 lb bag. Ingredients include chicken, chicken meal, barley, flaxseed, and several fruit and vegetable additions.

This is Hill's large-breed adult line, built around joint and muscle support for bigger dogs, and it comes in bulk at 45 lbs. That bag size is the practical draw for households feeding a large dog daily.

Large breed adult formula (1-5 years)
Chicken and barley recipe
45 lb bulk bag
Joint, muscle and coat support ingredients

Who it's for

Owners of large breed adult dogs (1-5 years) wanting a bulk supply with joint-support ingredients. Not sized or formulated for small or toy breeds.

Pros and cons

Pros

Joint and muscle support ingredients for large breeds
45 lb bag reduces how often you need to reorder
Includes skin and coat support ingredients like flaxseed

Cons

45 lb bag is excessive for anyone without a large dog
Not formulated for small or toy breeds

Performance notes

The formula lists chicken and chicken meal for protein, barley and whole grains for energy, flaxseed for coat support, and added fruits and vegetables. Hill's ties these to joint health, muscle care, and skin and coat support for large-breed dogs.

Specifications

Dimensions & fit
Brand	Hill's Science Diet
Item Weight	45 poundshigher than 100% of 150 dry pet foods
Dog Breed Size	Large
Capacity & performance
Age Range Description	Adult 1-5
Included components
Unit Count	45 pounds
Other details
Target Species	Dog
Flavor	Chicken & Barley
Special Ingredients	Chicken, Chicken Fat, Chicken Meal, Cracked Pearled Barley, Whole Grain Wheat, Whole Grain Corn, Flaxseed, Apples, Broccoli, Carrots, Cranberries, Green Peas
Animal Food Nutrient Content Claim	High Protein
Item Form	Dry Food
Breed Recommendation	All Breed Sizes
Animal Food Ingredient Claim	No Artificial Flavors
Container Type	Bag
Number Of Items	1
Specific Uses For Product	Hip And Joint Support, Muscle Care, Skin And Coat Health, Digestive Health, Large Breed Formula
Product Benefits	Supports joint health, promotes skin & coat health, builds lean muscles
Occasion	Everyday Nutrition
Recommended Uses For Product	Large Breed Adult Dog Nutrition, Joint Health Support
Additional Features	Joint Health Support For Large Breeds, Immune System Support With Antioxidants
Asin	B09RPJLZ9C
Best Sellers Rank	#596 In Pet Supplies (See Top 100 In Pet Supplies) #47 In Dry Dog Food
Manufacturer	Hill's Pet Nutrition
Upc	052742038452
Item Type Name	Large Breed, Dog Dry Food
Manufacturer Part Number	605517
Model Number	605517
Customer Reviews	{'ratings_count': '7,322', 'stars': '4.8'}