Dihydroquercetin — what it is in plain words

Dihydroquercetin is a natural flavonoid. According to the manufacturer, it is obtained from the butt and root parts of Siberian larch; its other international name is taxifolin.

Hence the brand name: Sibitax is made of the words Siberian, Bio and Taxifolin. The same raw material explains the presence of arabinogalactan in the ingredients — a polysaccharide obtained from the same wood.

They are related but different substances. The prefix “dihydro” means “plus two hydrogen atoms”: the dihydroquercetin molecule has one double bond fewer than quercetin. That is why its other scientific name is 2,3-dihydroquercetin, and its international name is taxifolin.

These are different substances: what is written about one cannot automatically be applied to the other.

This is an important difference from the advertising descriptions. In the state registration certificates the purpose is stated briefly and without promises:

• Vita Brain — “a source of dihydroquercetin, curcumin and flavonol glycosides”.
• Cardiovitin — “an additional source of vitamin C, a source of dihydroquercetin”.
• DKVitin-R — “a source of dihydroquercetin”.

The wording “a source of the substance” is all that the document confirms. The certificates state no therapeutic or preventive effect.

For capsules the manufacturer states the amount; for sticks and the bar only that the substance is part of a blend. The figures below come from the ingredient lists published by the manufacturer.

Ultra Protein + Day is not in the table: the manufacturer does not publish its ingredients.

On the manufacturer’s website, next to the description of dihydroquercetin, there is a long list of diseases by medical field. We do not reproduce that list: it is not information from the registration documents, and a food supplement is not a medicine and cannot be presented as a means of treating or preventing disease.

So we do not answer questions like “what does the body need it for” and “how to take it” on our own: that is a question for the instructions of the specific product and for a doctor.

Are Success Together products with dihydroquercetin medicines?

No. They are food supplements and functional food. In the registration certificates their purpose is stated as “a source of dihydroquercetin” — and nothing more.

Are dihydroquercetin and quercetin the same thing?

No. They are related flavonoids with different structures: dihydroquercetin has one double bond fewer. See the table above for details.

Are dihydroquercetin and taxifolin the same thing?

Yes, these are two names for the same substance. The Sibitax brand uses the second one: Taxifolin.

How much dihydroquercetin is in one stick?

The manufacturer does not say. The Success Day ingredients give only the total weight of the active components blend — 2420 mg, which besides dihydroquercetin includes arabinogalactan, citric acid and magnesium citrate.

Is there a product with dihydroquercetin alone?

The catalogue has Success T98, which the manufacturer describes as 98% dihydroquercetin in sticks. See the product card for ingredients and documents.

• Description of dihydroquercetin on the manufacturer’s website (in Russian) ↗
• Manufacturer’s “About us” page (in Russian) ↗
• Product documents
• Taxifolin (dihydroquercetin) in the PubChem chemical database ↗
• Quercetin in the PubChem chemical database ↗
• Product ingredients according to the manufacturer — on the catalogue cards