Quercetin 500 mg MONO
Natural quercetin in high doses. Premium dietary supplement.
Unleash the concentrated power of quercetin with 500 mg pure quercetin per capsule. This outstanding bioflavonoid from the Japanese string tree is standardised to 95% in each capsule, without additives. Rely on the highest quality for your well-being.
Item number:
QUE-60
€19.00
Content:
0.039
(€487.18
/ 1 Kilogramm)
Prices incl. VAT Shipping costs
Quantity
Unit price
From
1
€19.00
€487.18
/ 1
From
3
€18.00
€461.54
/ 1
-5.3 %
From
6
€17.00
€435.90
/ 1
-10.5 %
Total:
The most important facts at a glance




Allergens
gluten free
lactose-free
vegan
GMO-free
without undesirable additives
without magnesium stearate
sugar free
Ingredients
Ingredients: Japanese string tree extract (of which 95% quercetin), coating agent: hydroxypropyl methylcellulose (capsule shell)
1 capsule contains 526.32 mg Japanese string tree extract, of which 500 mg (95%) quercetin.
Origin Japanese string tree extract: Mongolia
Consumption recommendation
Recommended daily intake: Take 1x 1 capsule daily with liquid.
The product is stable after opening until the end of the best-before date (see label)
Take the product on an empty stomach or with a meal.
Notes
Food supplements are not a substitute for a balanced and varied diet and a healthy lifestyle. Do not exceed the recommended daily intake. Keep out of reach of children. Store in a dry place, cool and protected from light.
PZN Germany: 18654630 / PZN Austria: 5748217
Laboratory analysis
Product information

What is quercetin?
Quercetin is a plant flavonoid found in many types of fruit and vegetables. It belongs to the large group of polyphenols, which are known for their antioxidant properties. Quercetin therefore belongs to the group of yellow, secondary plant substances. Like other active plant substances, quercetin protects the plant from UV radiation, predators, viruses, fungi and bacteria.
The name quercetin is derived from the Latin word "quercus" for oak, as it was first identified in oak wood. A special property of quercetin is its ability to stabilise the cell membrane. Quercetin is the most abundant flavonoid. It is found in many types of fruit and vegetables, although most of the ingredients are lost when the peel is removed or the produce is heated. The Japanese string tree (botanical name: Sophora japonica) in particular has a very high natural quercetin content.
Quercetin is traditionally used in various cultures around the world. It is a well-known component of naturopathy and is valued in numerous traditional healing practices. The use of quercetin in traditional medicine reflects its versatile properties and the long history of its use. In these healing traditions, it is used for its natural properties and to support general wellbeing.
Natural sources and occurrence in food
Quercetin is found in a variety of plant foods. Particularly rich in quercetin are:
- Apples: The skin in particular contains high amounts of quercetin.
- Onions: Red and yellow onions are excellent sources.
- Berries: Blackberries, blueberries and cranberries are particularly rich in quercetin.
- Grapes and red wine: Grapes, especially the skin, and red wine contain significant amounts. Leafy vegetables: Kale and spinach are also good sources.
- Citrus fruits: Lemons and oranges also contain quercetin, albeit in smaller quantities.
- Green tea and capers also contain relevant amounts of quercetin.
A varied diet with a variety of fruit and vegetables can therefore ensure a sufficient intake of quercetin. It is estimated that the daily intake of quercetin through food is between 5 and 40 mg, depending on the diet. Food supplements can help to increase the intake.
Main benefits of our quercetin product
Our quercetin product offers a high dosage of 500 mg quercetin per capsule. Unlike traditional quercetin products, which are often produced with fillers or lower concentrations of the active ingredient, our product offers a high-dose, high-quality option specifically designed to ensure effective nutrient delivery.
Quercetin from SinoPlaSan
- High dosage: Each capsule delivers 500 mg of quercetin, providing effective support for your wellbeing.
- Purity: Our product contains no unnecessary additives or fillers.
- Natural source: The quercetin is derived from high-quality Japanese string tree extract, one of the best natural sources of quercetin.
- Plant-based and vegan: Our quercetin capsules are 100% plant-based and vegan.
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Questions and answers
Is quercetin dangerous?
Quercetin is generally considered safe when consumed in the usual amounts found in food. Taking high doses of quercetin as a dietary supplement can cause side effects such as headaches, gastrointestinal discomfort and skin rashes. However, if the recommended intake is adhered to, our quercetin product is considered to be well tolerated and harmless.
When should quercetin be taken?
Quercetin should be taken daily as recommended. It is recommended to take 1 capsule daily with liquid. You can take the product either on an empty stomach or with a meal, depending on what works best for you. Taking quercetin in the evening can also be beneficial, especially if it helps you to get into the habit of taking it regularly.