NATURAL FACTORS Quercetin with Zinc & Copper 500 mg (60 v-caps)Description When it comes to antioxidant support, quercetin alone is great. But quercetin combined with zinc and copper is even better. The benefits of quercetin, a natural plant compound, are many. It protects cells from damaging free radicals, and helps regulate immune response. This formula amplifies the benefits of quercetin with zinc, which is crucial for immune support, and copper, which competes with zinc for absorption. Quercetin helps zinc
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