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Holland and Barrett Quercetin

How Can Quercetin Help You?

Holland and Barrett Quercetin can help protect the body from the daily wear and tear we put it through.

There are a number of functions and benefits of Vitamin C:

  • Vitamin C contributes to the normal function of the immune system
  • Vitamin C contributes to normal collagen formation for the normal function of blood vessels, bones, cartilage, gums, teeth and skin
  • Vitamin C contributes to normal energy yielding metabolism
  • Vitamin C contributes to the normal functioning of the nervous system
  • Vitamin C contributes to normal psychological function
  • Vitamin C contributes to the protection of cells from oxidative stress
  • Vitamin C contributes to the reduction of tiredness and fatigue
  • Vitamin C increases iron absorption
  • This supplement is also suitable for vegans & vegetarians!

Reach for this healthy lifestyle today with holland and barrett quercetin!

Holland and Barrett Quercetin: benefits, dosage, side-effects

Date: March 17, 2019. Written by Beth Gibbons and Reviewed by Dr Sarah Schenker on March 20, 2019 Reference: link

Quercetin may help by:

  • Protect the body from free radicals – Quercetin acts as a powerful antioxidant, helping to protect cells from damage by free radicals: unstable molecules that can age the body and may lead to serious health conditions.*7
  • Reduce inflammation – Quercetin is found to be giving healthy male athletes a combination of quercetin and vitamin C for eight weeks reduced blood test markers for inflammation in the body.*9
  • Reduce blood pressure – Quercetin may act on cells that control blood vessel contraction and dilation, improving blood flow.*10
  • Act as a natural antihistamine – Quercetin is said to stimulate the immune system and restricts the release of histamine in the body, relieving allergy symptoms in conditions like hay fever, according to a 2016 study published in Molecules.*11
  • Anti-bacterial and anti-viral properties – Quercetin is suggested to also potentially block several respiratory viruses from replicating inside the body, including the common cold and flu.*12
  • It can help regulate blood sugar – Quercetin can help reduced blood glucose levels in people with metabolic syndrome, who have an increased risk of developing heart disease, stroke and diabetes.*13

Two caplets contain: %NRV*
Quercetin 500mg **
Vitamin C 1,400mg 1,750%
*NRV = Nutrient Reference Value **No NRV established

Vitamin C (as Ascorbic Acid), Bulking Agents (Dicalcium Phosphate, Microcrystalline Cellulose), Quercetin, Anti-Caking Agents (Magnesium Stearate, Silicon Dioxide), Glazing Agent (Hydroxypropyl Methylcellulose).

Potential Side-effects

Are there any side-effects of taking holland and barrett quercetin?

It is considered safe to take for healthy people.*17

However, it can have side- effects including:*18

  • headaches
  • nausea
  • numbness
  • tingling

Advice is for information only and should not replace medical care. Please check with your GP before trying any remedies


1. Beth Sissons. Medical News Today. What are the benefits of quercetin? 2. ScienceDirect. Quercetin 3. Kinker B, Comstock AT, Sajjan US. Quercetin: A Promising Treatment for the Common Cold

4. As Source 1

5. Anand David AV, Arulmoli R, Parasuraman S. Overviews of Biological Importance of Quercetin: A Bioactive Flavonoid

6. As Source 1

7. Boots AW, Haenen GR, Bast A. Health effects of quercetin: from antioxidant to nutraceutical

8. As Source 5

9. Askari G, et al. The effect of quercetin supplementation on selected markers of inflammation and oxidative stress 10. Serban M-C, et al. Effects of Quercetin on Blood Pressure: A Systematic Review and Meta-Analysis of Randomized Controlled Trials 11. Micek J, et al. Quercetin and Its Anti-Allergic Immune Response

12. As Source 3

13. Ostadmohammadi V, et al. Effects of quercetin supplementation on glycemic control among patients with metabolic syndrome and related disorders: A systematic review and meta-analysis of randomized controlled trials

14. As Source 1
15. As Source 1

16. John P. Cunha. RxList. Quercetin

17. As Source 1

18. As Source 16