Quercetin and histamine: A natural aid?
Quercetin is receiving increasing attention in the context of histamine intolerance. This natural plant compound is found in many types of fruit and vegetables and belongs to the flavonol group, a subgroup of flavonoids. Of particular interest: many foods that are rich in quercetin are also considered naturally low in histamine, which makes them attractive for people with histamine intolerance.
In this article, you will find out what quercetin actually is, which foods contain it, and what advice you should follow when taking it.
What is quercetin?
Quercetin is a yellow natural pigment and belongs to the secondary plant compounds, more precisely to the flavonols. This group of substances is involved in the coloring of many plants and serves them as natural protection against external influences.
The term "quercetin" is derived from the Latin word quercus (oak). In fact, a particularly high content of this plant substance is found under the bark of the oak. In many other plants, too, quercetin is concentrated in or directly under the skin, which is why part of the content can be lost through peeling or strong heating.

Quercetin and histamine intolerance: What role does the plant substance play?
Quercetin is frequently mentioned in connection with histamine intolerance. This is primarily because:
- Quercetin occurs naturally in many low-histamine foods
- the plant substance is regularly studied in scientific research
-
those affected report positive impressions in testimonials
Currently, however, there are no approved health claims that attribute a specific effect to quercetin for histamine intolerance. Therefore, clear efficacy promises are not permitted.
What we can say for certain, however:
Quercetin is a component of many types of fruit and vegetables that are well-suited for histamine intolerance anyway and support a varied diet.
Quercetin in low-histamine foods
The following low-histamine foods are rich in quercetin:
- Broccoli
- Apple
- Onion (1)
- Grapes
- Chives (1)
- Kale
- Lovage
- Tea
- Blueberries
- Cranberries
- Blackberries
- Black currants
- Cherries
The quercetin content can vary depending on the variety, growing region, and processing. Wild plants often contain higher amounts than cultivated plants.
How much quercetin is in fruit and vegetables?
In plants, quercetin is particularly located in:
- the outer layer
- the skin/peel
-
the colored parts
This means:
- Peeling reduces the quercetin content
- Long boiling reduces it further
-
Raw consumption usually leads to the highest amounts
For a low-histamine diet, it is advisable to incorporate quercetin-rich foods into your diet in a varied way.
Quercetin in dietary supplements
In addition to natural foods, quercetin is also a component of many dietary supplements. It is frequently extracted from:
- the Japanese pagoda tree (Sophora japonica)
-
Dimorphandra mollis ("Fava d’Anta")
How high the content is and how a product is dosed differs depending on the manufacturer.
Important: The recommended intake for the respective product should always be observed.
An overdose via a normal diet is considered unlikely. For some groups of people, e.g., pregnant women, nursing mothers, children, or people with certain pre-existing conditions, medical advice is recommended before taking dietary supplements.
Quercetin and potential side effects
When adhering to standard consumption amounts, foods containing quercetin are considered well-tolerated. In high dosages from dietary supplements, individual intolerances may occur, as with many substances.
You should refer to the respective product description for specific information on this.

Quercetin in our dietary supplements
In our dietary supplements, we use carefully selected raw materials. Our quercetin comes from the Japanese pagoda tree, one of the best-known sources of the flavonol.
Quercetin is not only a component of our KumaFit, but is also used in other products. For example, our BalanceFit with selected vitamins, minerals, and OPC, as well as our DaoFit with vegan DAO from pea sprouts and vitamin C from acerola, also contain quercetin.
Depending on the product, quercetin is combined with various ingredients and is part of a formula tailored to the respective area of application.
Conclusion: Quercetin as part of a low-histamine diet
Quercetin is an exciting plant substance that occurs naturally in many low-histamine foods. For people with histamine intolerance, it can therefore make sense to regularly integrate quercetin-rich fruits and vegetables into their meal plan.
Scientifically, the role that quercetin plays in the body is being intensively studied. However, clear efficacy promises are not permitted. As part of a diverse, plant-based, and low-histamine diet, quercetin can nevertheless make a valuable contribution.
Would you like to be well-positioned for a low-histamine diet in everyday life? Our AlltagFit-Set combines DaoFit, BalanceFit, and DextroFit into three coordinated products for different everyday situations. DaoFit and BalanceFit also contain the quercetin introduced in this article. This gives you three practical companions bundled in one set.
Lieferzeit: 2-3 Tage
