Flavonoids are a diverse group of plant-based antioxidant compounds that give fruits and vegetables their vibrant colors. They provide anti-inflammatory and antioxidant benefits that complement your dog's endogenous antioxidant systems. Quercetin, anthocyanins, and catechins are among the most studied flavonoids with potential benefits for dogs, including reducing allergic inflammation and supporting cardiovascular health.
A small handful of blueberries (about 30g) provides roughly 50–70mg of mixed flavonoids — there is no established requirement for dogs. Including small portions of colorful fruits and vegetables like blueberries, apples, kale, broccoli, and strawberries in your dog's diet naturally provides a beneficial spectrum of flavonoids. These are bonus antioxidants, not a dietary necessity.
0.06% of daily nutrient intake
Flavonoids makes up 0.06% of your dog's total daily nutritional requirements by weight. That's a tiny amount — but it matters.
Flavonoids are not essential nutrients and have no formal deficiency state. However, dogs eating diets completely devoid of plant matter miss out on these protective compounds.
Excessive flavonoid intake from whole food sources is virtually impossible. Some concentrated supplements (particularly quercetin) can cause gastrointestinal upset at very high doses.
| Life Stage | Size | Min | Max | Unit | Notes |
|---|---|---|---|---|---|
| Adult | medium 10-25kg | 0 | 200 | mg | No formal requirement. Including colorful fruits and vegetables naturally provides beneficial flavonoid antioxidants. |
Source: general veterinary consensus
