Quercetin is sometimes considered nature's Benadryl. It is a naturally occurring flavonoid found in many plants. Flavonoids (or bioflavonoids) are plant-pigments that play an essential role in attracting pollinators to plants. Flavonoids also offer a host of beneficial properties to humans, dogs, cats and other animals.

Give with Bromeliad (pineapple derived digestive enzyme) to help with digestion. Ratio is 1/4-1/3 amount of Bromeliad to Quercetin.

St. John's Wort Flower

Quercetin can be found in rich concentrations in some fruits, vegetables and herbs- that are safe for your dogs and cats. These include:

- Apples (fresh)

- Berries

- Bananas

- Broccoli

- Cherries (Dark)

- Garlic (Fresh)

- Grapefruit (Particularly white grapefruit) and grapefruit seed extract

- Green Tea

- Gingko biloba

- Chamomile Tea

- Parsley

- Summer Squash

- St. John's Wort

What is Quercetin?


Multiply weight of dog (lbs) by 8. For example, a 50 lb dog should receive 400 mg of Quercetin once a day. Can be divided in half and given twice a day.


Do Not give this drug with antibiotics or cyclosporine.

In very high doses, can cause kidney failure.

Do Not give to pregnant or lactating dogs or cats.

Chamomile Plant

Quercetin is :

- anti-allergenic (anti-histamine)

- anti-carcinogenic

- antifungal

- anti-inflammatory

- anti-microbial

- anti-viral