Natural Factors
C Extra + Quercetin - 60 Tabs
C Extra + Quercetin - 60 Tabs
Key Benefits
Key Benefits
- Supports immune system function
- Contains antioxidants that help protect cells from free radicals
- Assists in collagen formation for healthy bones, cartilage, teeth, and gums
- Supports nutrient metabolism
- Helps maintain adequate vitamin C levels
- Supports immune system function
- Contains antioxidants that help protect cells from free radicals
- Assists in collagen formation for healthy bones, cartilage, teeth, and gums
- Supports nutrient metabolism
- Helps maintain adequate vitamin C levels
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C Extra + Quercetin combines vitamin C with quercetin in a single tablet to support overall wellness. This supplement provides a balanced dose of both ingredients for daily use.

Vitamin C contributes to collagen production, supporting the maintenance of bones, cartilage, teeth, and gums. Quercetin, a bioflavonoid found in various fruits and vegetables, complements vitamin C by enhancing its activity in the body.
Quercetin is known for its antioxidant properties and its role in supporting the body's natural functions. This formula combines these two ingredients to provide a convenient way to include both in your daily routine.
- Vitamin C (ascorbic acid) 500 mg
- Quercetin (bioflavonoids) 500 mg
Non-medicinal ingredients:
- Vegetarian capsule (carbohydrate gum [cellulose], purified water)
- Microcrystalline cellulose
- Vegetable grade magnesium stearate (lubricant)
- Stearic acid
- Silica
Important information:
- Contains no preservatives, sweeteners, gluten, or GMOs
Take 1 tablet daily with food or as directed by a health care practitioner.
Format: Tablets
Main Ingredient: Vitamin C and Quercetin
Package Size: 60 Tablets
Brand: Natural Factors
Category:
SKU: nf1368
Barcode: 0068958013336
Product Details
Product Type: SupplementsFormat: Tablets
Main Ingredient: Vitamin C and Quercetin
Package Size: 60 Tablets
Brand: Natural Factors
Category:
SKU: nf1368
Barcode: 0068958013336
Daily Wellness
Easy to add to your everyday health routine.
Carefully Selected
Chosen with quality and customer needs in mind.
Simple to Use
Designed for convenient daily supplementation.
Ships to the U.S.
Fast, reliable shipping to U.S. customers.
- 5 stars: 17 (100%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 star: 0 (0%)
Decent quality supplement at a reasonable price; will probably buy again soon.
No unpleasant taste or side effects for me, which is always a plus in supplements.
I like that it’s not over-packed with extras I don’t need, just the vitamin C and quercetin.
These have become part of my daily health regimen—simple and convenient.
Wish the bottle was a little smaller for travel, but overall very happy with this purchase.
Packaging was sturdy and arrival was quick, product intact and fresh.
Easy to fit into my morning routine, no fuss, just one tablet and done.
The combination seems smart, and I feel more confident getting both nutrients regularly now.
Been using this on and off for a couple of months and feel like my energy has steadied.
A nice balanced supplement for anyone wanting to boost their daily vitamins without extra fillers.
Tablets are a bit big but not too hard to take with water.
Noticed I got fewer colds this season, though it’s hard to say if it’s just coincidence.
The bottle lasts a good while with two a day; good value for the price.
I’ve tried a few vitamin C products before, but the addition of quercetin made this stand out for me.
Great supplement, easy to swallow, no weird aftertaste which I appreciate.
Took these daily for a month and felt good about adding them to my routine, no issues at all.
Really like that this combines vitamin C and quercetin—it feels convenient to get both in one tablet.