Quercetin

Buy quercetin: the plant-based flavonoid in capsules

Quercetin is a naturally occurring plant substance belonging to the flavonoids, a large group of plant pigments. It is found in a variety of fruits and vegetables and is offered as a dietary supplement in capsules, often derived from plant sources such as the Japanese honeysuckle (Styphnolobium japonicum). Quercetin is regularly combined with substances such as bromelain, zinc, or vitamin C. In our range, you will find quercetin as a standalone supplement and in combination products, from various brands and in different dosages.

What is quercetin?

Quercetin is a plant-based compound from the flavonoid group. These substances partly give plants their colour. Quercetin occurs naturally in many common foods and is generally extracted from plant extracts, such as Styphnolobium japonicum, for use in supplements. In supplement form, it is offered as a capsule containing a standardised amount of quercetin per capsule. The label states how much quercetin a product provides per serving.

What foods contain quercetin?

Quercetin occurs naturally in a wide range of fruits and vegetables. Well-known sources include onions (especially red onions), apples, capers, berries, grapes, leafy green vegetables, and herbs. Tea and red wine also contain quercetin. The amount varies greatly depending on the product and preparation method. A varied diet rich in fruits and vegetables provides daily quercetin, while a supplement offers a standardised amount for those who wish to take it.

Quercetin combined with bromelain, zinc, or selenium

In supplements, quercetin is often combined with other substances. A common combination is quercetin with bromelain, an enzyme found in pineapple. There are also formulas in which quercetin is combined with minerals such as zinc and selenium. These combinations are offered because users often want to take several substances at the same time. In our range, you will find both pure quercetin products and combination preparations, so you can choose based on your preference.

How much quercetin per day?

No official recommended daily amount has been established for quercetin. The dosage varies by product and is stated on the packaging, usually expressed in milligrams per capsule, often around 500 mg. Follow the directions for use of the specific supplement and do not exceed the recommended dosage without advice. If you are taking medication or in case of doubt, it is advisable to consult a doctor or therapist beforehand.

Who might benefit from quercetin?

Quercetin supplements are intended for adults who wish to use this plant substance as a dietary supplement. Because quercetin is derived from plant sources, many products are suitable for a vegan diet, although the capsule shell may sometimes be of animal origin; check this on the label. During pregnancy or breastfeeding, and when taking medication, it is advisable to consult a doctor beforehand. Always follow the recommended dosage on the packaging.

Buying quercetin: what to look for?

When choosing a quercetin supplement, there are a few practical points to consider. Look at the amount of quercetin per capsule and the plant source of the extract. Decide whether you are looking for pure quercetin or a combination, for example with bromelain or minerals. Pay attention to purity and calculate the price per daily serving in relation to the package size. Quercetin is a plant-based flavonoid; for related products, also view our Vitamin C and Herbs & Plants collections.