NutriSource Large Breed Puppy is dry puppy food made for breeds that will mature above 50 pounds. The formula is built around controlled growth, with calcium and phosphorus levels specifically adjusted to match what large breed puppies need at this stage. The 1.5 lb bag is a trial size that suits breeders evaluating the formula before stocking up, or buyers who want to introduce it alongside a regular purchase.
Key Features
Large Breed Specific Formula: Designed for puppies that will exceed 50 pounds at maturity, where growth rate and skeletal development require specific nutritional management rather than a standard puppy profile.
Adjusted Calcium and Phosphorus: Large breed puppies need a different mineral ratio than small or medium breeds. Getting these levels right supports proper bone density without driving the fast growth that leads to joint problems.
Balanced Protein, Fat, and Carbohydrates: Each macronutrient is calibrated to support growth at an appropriate rate without overloading large breed joints or encouraging excessive weight gain during the puppy phase.
Muscle and Skeletal Support: The formula is built to help large breed puppies develop strong muscle and healthy bone structure through the growth window.
1.5 lb Trial Size: Small enough to evaluate how your puppy responds before committing to a full-size bag. Easy to carry home or include as part of a larger breeder supply order.
Product Specifications
| Form | Dry kibble |
| Bag Size | 1.5 lb |
| Suitable For | Puppies of breeds maturing above 50 lb |
| Life Stage | Puppy |
| Key Nutrients | Adjusted calcium, phosphorus, balanced protein, fat, carbohydrates |
| Primary Purpose | Controlled growth nutrition for large breed puppies |
| Dimensions | 7.62 x 15.24 x 15.24 cm |
Why Choose This Food
Large Breed Growth Requires Its Own Formula: Fast, unmanaged growth in large breed puppies puts real stress on developing joints and bones. A formula calibrated specifically for this stage reduces that risk in a way that standard puppy food does not.
Mineral Ratios Built for Breed Size: The calcium and phosphorus levels here are set for large breed development, not carried over from a general puppy recipe. That distinction matters in how the skeletal system develops during the growth window.
Trial Size That Removes the Risk: The 1.5 lb size lets you see how your puppy takes to NutriSource before scaling up to a full bag.
Practical for Breeders Evaluating Formulas: Breeders who work with large breed litters often trial a few formulas before settling. This size makes that process straightforward without overcommitting on stock.
For the puppy that is going to be a big dog, the nutrition needs to match that from the start.
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