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#5 in Vitamins Third-Party Tested

Life Extension Vitamin C and Bio-Quercetin

by Life Extension

"Vitamin C enhanced with bio-quercetin phytosome for superior absorption and immune synergy"

Amazon Rating
4.7/5
Reviews
10,000+
Price Range
$16-22
Servings
250 tablets
GMP CertifiedNon-GMO
Our Editorial Rating
8.5
Very Good
FormTablet
CategoryVitamins
SubcategoryVitamin C + Quercetin
View on Amazon

Overview

Life Extension Vitamin C and Bio-Quercetin provides 1000mg of vitamin C with Bio-Quercetin Phytosome — a patented form of quercetin with 50x greater bioavailability than standard quercetin. This combination is synergistic because quercetin recycles vitamin C, extending its antioxidant activity, while vitamin C enhances quercetin absorption. Life Extension's research-driven approach means every ingredient is selected based on published clinical evidence. The 250-tablet count provides over 8 months of daily supplementation.

Key Ingredients

IngredientAmount
Vitamin C (as Ascorbic Acid)1000 mg
Bio-Quercetin Phytosome15 mg

Pros & Cons

What We Like

  • 1000mg vitamin C + bio-quercetin synergy
  • Bio-Quercetin 50x more bioavailable
  • 250 tablets (8+ month supply)
  • Life Extension research-driven quality
  • 10,000+ Amazon reviews

What Could Be Better

  • Tablet form (not buffered)
  • May cause stomach upset at 1000mg
  • Quercetin dose is modest (15mg)
  • Standard ascorbic acid (not liposomal)

Who Is This For?

Best For

  • Immune support
  • Antioxidant protection
  • Those wanting vitamin C + quercetin synergy
  • Life Extension brand loyalists

Not Ideal For

  • Those with sensitive stomachs
  • Those wanting liposomal vitamin C
  • Those wanting higher quercetin dose

Our Verdict

8.5/10 — Very Good

Life Extension Vitamin C + Bio-Quercetin is the research-driven vitamin C that goes beyond basic ascorbic acid. The bio-quercetin synergy is scientifically sound — quercetin recycles vitamin C for extended activity. At 250 tablets for under $22, the value is excellent.

Alternatives to Consider

No direct alternatives listed for this product yet.