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New Improved Formula

Fast-C® and Bio-Quercetin Phytosome

Vitamin C & Quercetin Formula for Advanced Antioxidant Support

Item #02229 60 Vegetarian Tablets 1 per serving In stock

For you, if you are looking for an ultra-absorbable form of Vitamin C and quercetin antioxidant support


The active ingredients in Fast-C® and Bio-Quercetin Phytosome:


  • Comprise an ultra-absorbable and high-potency vitamin C formula
  • Provide powerful support for immune system health
  • Inhibit oxidative stress and inflammation
  • Include bio-quercetin which is up to 50 times more absorbable than standard quercetin
  • Include black pepper extract which encourages absorption and bioavailability
  • Include a calcium-magnesium blend which eases sensitive stomachs


Vitamin C is an important natural immune system supporter and antioxidant. Fast C® and Bio-Quercetin Phytosome amplifies the many health benefits of vitamin C with its unique formulation by including both highly-absorbable quercetin and a unique calcium-magnesium mineral complex which makes it easy to tolerate - even for sensitive stomachs.

You may experience backorders/out of stock situation, due to high demand. We recommend our multivitamins that contain both Zinc and Vitamin C.

Buy 4 get 10% discount

Product Details

Health Benefits at a Glance:

Fast-C® and Bio-Quercetin Phytosome provides a very potent antioxidant formula that can amplify all the positive health impacts that vitamin C has on the body. The ingredients are delivered in an ultra-absorbable formula containing quercetin for extra antioxidant support. Moreover, a calcium-magnesium blend offers protection for sensitive stomachs that makes this an ideal product for anyone wanting a super-charged Vitamin C or antioxidant formula.


Why it Works:

Vitamin C is a potent natural antioxidant which has a profound impact on whole-body health benefits. This essential nutrient supports immune health, heart health, iron uptake, collagen formation, and more. 

Moreover, Fast C® and Bio-Quercetin Phytosome also contains quercetin which helps inhibit oxidative stress caused by free radicals and also inhibits inflammation [4,5].

Quercetin also promotes both cardiovascular and endothelial health and helps maintain healthy blood pressure already within the normal range [6-11].

The fact that Fast C® and Bio-Quercetin Phytosome contains both quercetin and vitamin C, makes it an ideal vitamin C supplement since quercetin complements vitamin C’s whole-body health benefits.

Furthermore, our innovative bio-quercetin ingredient in this supplement is encased in a phytosome - a tiny phospholipid sphere that makes it up to 50 times more bioavailable than traditional quercetin [12].

Our Fast C® and Bio-Quercetin Phytosome also contains calcium and magnesium which neutralizes acid. This makes Fast C® the ideal vitamin C supplement for people with acid-sensitive stomachs.

Lastly, Fast C® and Bio-Quercetin Phytosome also contains piperine which is a substance found in black pepper that augments the absorption and bioavailability of nutrients like vitamin C [13].


The Science Behind the Product:

Research has been done on vitamin C and it has shown that vitamin C can be a powerful antioxidant [15-22]. It can scavenge free radicals, can provide protection from oxidative stress [3-10]. Vitamin C can also stimulate iron absorption [23, 24]. Furthermore, it can also participate in the formation of collagen that supports arterial walls, skin, bones and teeth [17-19]. Vitamin C also plays a role in protection against environmental and physical stresses such as ingestion of heavy metals [24-29], cigarette smoking [30-33], compromised immunity [34-41] and extreme temperatures [29, 42-44].

There is a scientific evidence that specialized compounds in fruits and vegetables provide critical protection against free radical assault [45]. Quercetin is a bioflavonoid found in grape skins, onions, apples, buckwheat and other food sources.

Quercetin has a long tradition of use relieving the effects of seasonal immune challenges, and has been shown in clinical trials to encourage a healthy immune response in physically fit adults [46, 47] Quercetin helps inhibit oxidative stress and inflammation [48,49]. Quercetin also promotes both cardiovascular and endothelial health and helps maintain healthy blood pressure already within the normal range [50-55].


How to Use:

  • Take one (1) tablet once or twice daily with or without food, or as recommended by a healthcare practitioner.
  • Caution: Do not take more than 15 mg per day of Bioperine®.


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Supplement Facts

Supplement Facts

Serving Size 1 vegetarian tablet

Amount Per Serving

Vitamin C (as ascorbic acid)

500 mg

Calcium (as calcium carbonate)

79 mg

Magnesium (as magnesium hydroxide)

8 mg

Bioperine® piperine [from black pepper extract (fruit)]

3 mg

Bio-Quercetin phytosome

15 mg

(providing 5 mg quercetin [from Japanese sophora concentrate (flower bud)], phosphatidylcholine complex [from sunflower])  

Other ingredients: microcrystalline cellulose, stearic acid, maltodextrin, croscarmellose sodium, vegetable stearate, silica, coating (hydroxypropyl methylcellulose, glycerin).


Fast-C® is a registered trademark of Scientific Food Solutions, LLC.
Bioperine® is a registered trademark of Sabinsa Corporation.

Dosage and Use
  • Take one (1) tablet once or twice daily with or without food, or as recommended by a healthcare practitioner.

Do not take more than 15 mg per day of Bioperine®.

Do not purchase if outer seal is broken or damaged.
If you are undergoing treatment for a medical condition or if you are pregnant or lactating, please consult with your medical practitioner first.
A food supplement should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. Store tightly closed in a cool and dry place.

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Product reviews are provided for informational purposes only and reflect solely the views and opinions expressed by the contributors and not those of Life Extension. We do not verify or endorse any claims made in these reviews.