Royal Canin Great Dane Adult Dry Dog Food

12 ingredients in this list are ones we hold sourced evidence on , and none of them is contested in the veterinary literature.

• Fish oil (EPA + DHA omega-3) · ingredient 9Well 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.
• Beet Pulp · ingredient 10Well supportedThe fibrous material left after sugar is extracted from sugar beets, included as a moderately fermentable fiber source (commonly around 5 to 7.5% of the diet). Controlled feeding studies show it supports firm, good-quality stools and short-chain fatty acid production without impairing overall nutrient digestibility, so the 'cheap filler' characterization is not supported by the evidence.
• Rosemary extract · ingredient 35Well supportedA plant-derived natural antioxidant (active compounds carnosic acid and carnosol) used to slow fat oxidation, frequently chosen as an alternative to synthetic preservatives. It is an authorized food antioxidant in the EU (E 392); JECFA established a temporary acceptable daily intake for rosemary extract expressed as carnosic acid plus carnosol.
• Mixed tocopherols (natural vitamin E) · ingredient 36Well 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.
• By-Product Meal (Meat / Poultry By-Product Meal) · ingredient 2NeutralA rendered concentrate made from clean, non-muscle parts of the carcass (organs, necks, feet, and similar), defined by AAFCO. It is more variable and lower-transparency than a named muscle meal, but it is not inherently unsafe or low-nutrition: controlled feeding trials in dogs report high protein digestibility (roughly 92-95%) for poultry by-product-based diets, and some by-product organs are nutrient-dense.
• Tapioca · ingredient 3NeutralA nearly pure starch extracted from the cassava root, used as a carbohydrate base and binder in grain-free foods (it is a root starch, not a cereal grain). Because it is almost entirely starch with little protein, tapioca contributes essentially no amino acids and is not implicated in the taurine hypothesis; it was not a highlighted ingredient in the FDA's DCM investigation, which focused on pulses and potatoes.