Quercetin Bioactive


Quercetin is a natural flavonoid found in small amounts across a wide variety of fruits and vegetables. Whilst it has various health-related benefits, it is most popularly used and researched in the areas of allergy, inflammation, and immune modulation. Unformulated quercetin is poorly absorbed in the gut and metabolised quickly, meaning large amounts need to be taken on a frequent basis in the hopes of delivering any major benefit.

Natroceutics Quercetin utilises Quercefit™, which is shown to enhance the bioactivity and efficacy of quercetin. Modulating histamine reactions in allergies as well as supporting inflammatory and immune response. Natroceutics Quercetin is researched in the fields of allergy, asthma and dermatology.


  • Quality is assured through GMP (Good Manufacturing Practice) and batch testing.
  • Clean and free from agrochemicals, artificial additives, and heavy metals.
  • Studied by experts in the field of Glutathione and SOD.
  • Designed to deliver therapeutic efficacy.
  • Vegan-friendly – 100 % plant-based.

    Pair with these tests

    To determine whether you need to add glutathione as a nutrient co-factor, we recommend that you order one of these tests online:




    For persons over 18 years, old take 1-2 tablets a day or as directed by your healthcare practitioner. 


    Store in a cool, dry dark place.

    Medical disclaimer

    Nothing on our website should be construed as medical advice and we encourage you to obtain professional advice before taking any action on the strength of information, ideas, or opinions expressed on this website. The products are not intended to cure or prevent any condition and we recommended that you contact your personal physician or doctor prior to the consumption of any product. We make no representations or warranties regarding the efficacy and/or suitability and/or fitness for purpose of the product including in connection with any condition.