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Purina Pro Plan Sensitive Skin & Stomach Large Breed Salmon & Rice Formula Dog Food
A feeding-trial-validated, salmon-first dry food that's cheaper per calorie than 59% of the dry foods we've priced and denser than 65% (you feed fewer cups) — $1.75 a day for your 40-lb adult dog.
THE FACTS, ONE SENTENCE — data as JSON · reference dog 40 lb · updated 2026-10-18
The evidence
The Verified Label
Every food on this site gets this exact panel — same fields, same order, sourced from the official label — so brands finally become comparable. Dots show where this food sits among all 494 dry foods we've verified.
verified 2026-10-18
Composition — dry-matter basis
why dry matter
Calories & cost — for your 40-lb adult dog
Cost per 1,000 kcal: $1.78 — cheaper than 59% of the 360 dry foods we've priced (median $1.93). Serving math uses standard veterinary energy formulas — see the formula.
Standards & ingredients
what this means
why unknown
Safety
Source: official label source (official)· price: Amazon, 2026-10-18 · anchors: 494 verified dry dog foods (360 priced) · how to read this label
The fit
For your dog, specifically
Checked for a 40-lb adult with a sensitive stomach — the same published criteria our finder uses. Change your dog above and these update.
The source material
The full ingredient list
Every flag above is computed from this list. Why order is by pre-cooking weight, and how splitting bends it →
Salmon, rice, barley, oat meal, fish meal, canola meal, salmon meal, beef fat preserved with mixed-tocopherols, dried yeast, natural flavor, sunflower oil, dried chicory root, salt, fish oil, calcium carbonate, potassium chloride, VITAMINS [Vitamin E supplement, niacin (Vitamin B-3), Vitamin A supplement, calcium pantothenate (Vitamin B-5), thiamine mononitrate (Vitamin B-1), Vitamin B-12 supplement, riboflavin supplement (Vitamin B-2), pyridoxine hydrochloride, folic acid (Vitamin B-9), menadione sodium bisulfite complex (Vitamin K), biotin (Vitamin B-7), Vitamin D-3 supplement], L-Lysine monohydrochloride, taurine, MINERALS [zinc sulfate, ferrous sulfate, manganese sulfate, copper sulfate, calcium iodate, sodium selenite], choline chloride, DL-Methionine, potassium citrate, glucosamine hydrochloride, L-ascorbyl-2-polyphosphate (Vitamin C)
6 ingredients in this list are ones we hold sourced evidence on , and none of them is contested in the veterinary literature.
- Named Meat/Poultry Meal (e.g., Chicken Meal, Lamb Meal) · ingredient 5Well supportedA rendered, water- and fat-reduced concentrate from a named species (AAFCO, e.g., 'chicken meal'). Because most moisture is removed it is a dense protein source (poultry meals commonly around 57-69% crude protein) and it names the species for allergy avoidance.
- Mixed tocopherols (natural vitamin E) · ingredient 8Well supportedA blend of vitamin E forms (alpha-, beta-, gamma-, delta-tocopherol) used as a natural-source antioxidant to slow fat rancidity, commonly chosen as an alternative to synthetic preservatives. EFSA concluded that tocopherol-rich extracts are safe for all animal species and the consumer and are efficacious antioxidants in feed.
- Fish oil (EPA + DHA omega-3) · ingredient 14Well supportedMarine-source omega-3 fatty acids (EPA and DHA) from fish oil. A randomized, double-blinded controlled trial (Roush 2010) found improved weight-bearing in dogs with osteoarthritis, and a 2022 meta-analysis identified clear clinical analgesic efficacy for omega-3-enriched diets and supplements.
- Prebiotics (chicory root / inulin, FOS) · ingredient 12NeutralFermentable fibers (chicory-derived inulin and fructooligosaccharides) that feed colonic bacteria and are readily fermented to short-chain fatty acids in dogs. Feeding studies show they shift fecal microbiota composition and are well tolerated at typical inclusion levels, but clear health benefits beyond compositional change are not yet established.
- Taurine (supplemental) · ingredient 19NeutralA sulfur amino acid that dogs can normally synthesize from methionine and cysteine, so it is not classically essential for them. However, some breeds (e.g., golden retrievers) and some diets are linked to low taurine status and dilated cardiomyopathy: an observational study (Ontiveros 2020) associated non-traditional, largely grain-free diets with taurine deficiency and DCM-consistent echocardiographic changes in golden retrievers, though causation and mechanism remain under investigation.
- Glucosamine · ingredient 24NeutralA popular joint supplement, usually paired with chondroitin. A 2022 systematic review and meta-analysis (Barbeau-Grégoire et al.) found a marked non-effect of glucosamine-chondroitin products for osteoarthritis pain and recommended they no longer be relied upon for joint pain management in dogs and cats.
Wet ingredients like fresh salmon shrink once cooked — which is why named meals appearing high on the list matter: they keep meaningful animal protein after moisture is removed.
Nutritional twins
Cheaper close matches
Verified foods with a closely matching label at a meaningfully lower cost per 1,000 kcal.
Label-composition matches only: same species, form, and growth stage; same primary protein where both are known; grain-free preserved; protein within 4 points and fat within 4 points, and estimated carbs within 8 points, on a dry-matter basis. Not a medical or quality recommendation.
The maker
Who makes this — and how they back it up
The five questions the WSAVA nutrition guidelines tell you to ask a pet-food company. Every answer is sourced or marked as an undisclosed gap — never guessed. This is the "is it made competently?" axis that star-rating sites skip.
Nestlé Purina owns and operates its own U.S. factories (21+ as of 2019).
source →Arleigh Reynolds, DVM, Purina Senior Research Scientist, described as board-certified in veterinary nutrition. Source is Nestlé Purina PetCare (maker of Pro Plan).
source →40 of 59 labels we checked carry an AAFCO feeding-trial substantiation statement.
source →The company website blocked our automated check, so we could not read its quality-control page. This is not a "no".
144 PubMed papers (animal/pet filtered) list Nestlé Purina in an author address; we checked 144 and 143 really name the company. A floor, not a total.
source →Full company scorecard, sources, and every SKU we've verified for this brand: Purina Pro Plan brand page →