Source Naturals Activated Quercetin, Bioflavanoid Complex, for Seasonal & Immune Support* - 100 Capsules
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- Seasonal support supplement featuring quercetin, a natural histamine blocker, helping to inhibit histamine release, along with key additional ingredients for immune support.
- Key additional ingredients—like the pineapple enzyme bromelain, magnesium citrate, and vitamin C—serve to activate and optimize quercetin’s benefits, in addition to providing immune, respiratory, and antioxidant support.*
- Suggested Use: 3 capsules 1 to 2 times daily in divided doses, between meals. If you have a delicate, easily irritated stomach, take with meals.
- Over 40 Years of Trust. Source Naturals was created in 1982 by CEO Ira Goldberg to support everyone’s potential to enjoy optimal health.
- Manufactured in the USA. Manufactured in Scotts Valley, CA, under the Good Manufacturing Practices (cGMPs) established by the US Food and Drug Administration (FDA).
Important information
Safety Information
Do not use if either tamper-evident seal is broken or missing. Keep out of the reach of children. NOTE: If you are pregnant, may become pregnant, or breastfeeding, consult your health care professional before using this product.
Indications
Please See Manufacturer’s Label
Ingredients
Vitamin C (as ascorbic acid), Magnesium (as magnesium citrate), Quercetin, Bromelain (2,000 G.D.U. per gram)††
Directions
Suggested Use: 3 capsules 1 to 2 times daily in divided doses, between meals. If you have a delicate, easily irritated stomach, take with meals.
Legal Disclaimer
The products offered are not intended to diagnose, treat, cure, or prevent any disease. If you believe that you may have a disease condition, please consult your healthcare practitioner immediately, and before using any dietary supplement product.
Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.
Product Dimensions
2.37 x 2.37 x 4.33 inches; 3.68 ounces
| Ingredients | Quercetin or Bromelain (2 or Vitamin C (as Ascorbic Acid) or Magnesium (as Magnesium Citrate) or 000 G.d.u. Per Gram)†† |
| Expiry Date | Nov 2026 |
| Primary Supplement Type | Quercetin |
| Diet Type | Gluten Free |
| Flavor | Unflavor |
| Item Form | Capsule |
| Product Type | Vitamin |
| Brand | Source Naturals |







