Douglas Laboratories Quercetin-Bromelain Complex

Selection: 100 Tablets
Sale price$32.60

- Free shipping on U.S. orders over $39
- U.S. Delivery Estimate: 3-5 days
- 45 Day Return Policy


  • Douglas Labs Quercetin-Bromelain Complex is a unique formulation of quercetin, buffered vitamin C and bromelain.
  • Quercetin is a bioflavonoid that has antioxidant activity to support vascular and immune cell function.
  • Magnesium ascorbate is a buffered form of vitamin C, a key antioxidant, which synergistically supports the quercetin activity.
  • Bromelain is a proteolytic enzyme purified from pineapple.


Serving Size 1 Tablet

Amount Per Serving  %DV

Vitamin C…....... 200 mg 333%

(as magnesium ascorbate ascorbic acid complex)

Magnesium…….13 mg 3%

(as magnesium ascorbate)

Quercetin.........333 mg

Bromelain .........240 m.c.u.

*Daily Value not established.

Other Ingredients:

Cellulose, stearic acid, vegetable stearate, silica and ethylcellulose.

Suggested Usage:

Two to four tablets twice daily between meals as a dietary supplement, or as directed by physician.

Side Effects:

No adverse side effects have been reported.


Store in a cool, dry place, away from direct light. Keep out of reach of children.

 *These statements have not been evaluated by the U.S. Food and Drug Administration. This product is not intended to treat, mitigate, diagnose or cure any disease.

Customer Reviews

Based on 9 reviews
Douglas Laboratories Quercetin-Bromelain Complex

Originally I had heard high dose Quercetin was helpful as a natural seasonal allergy mitigation because of it's anti-oxidant & anti-inflammatory characteristics. The need for that varies year to year. Since the onset of COVID Quercetin has been mentioned by various doctors Such as Dr Zelensky as a natural help in mitigating COVID infection/exposure so I make sure to keep some on hand "just in case". Obviously anything that tones down inflammation is good during a "cytokine storm" but if I recall correctly it helps with the zinc. I like Douglas Labs formulation because of their known high quality but also because they provide the quercetin in combination with other helpful supplements that are known to help as anti-inflammant and anti-oxidant agents.. IE, because your buying quercetin they know what your trying to achieve so they add in "you also need this stuff" factors like Vitamin C, Bromelain and magnesium..

I have developed a trust of Douglas labs offerings for both their high quality and relatively high value

Cathy A.

Excellent service

Timothy E.
Good anti- inflammatory

Was very happy with the prompt service. I’ve been taking this supplement for quite a while believe it works well.

Sona N.
Love the long-term benefit

This supplement has had a tremendous benefit on my son’s compromised respiratory system as a lung strengthener. He is 11 and I have been using it for more than 5 years,

Good stuff so far

I just started using this product. I don’t know if it’s working.

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