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Doctor's Best Vitamin C with Quali-C 1000 mg, Non-GMO, Vegan, Gluten Free, Soy Free, Sourced from Scotland, 120 Veggie Caps

4.6 out of 5 stars 190 customer reviews
Amazon's Choice recommends highly rated, well-priced products available to ship immediately.
Amazon's Choice for "doctors best vitamin c"
About the product
  • Best Vitamin C featuring Quali -C provides a brand of ascorbic acid manufactured in Scotland prized for its quality and reliability
  • Vitamin C is essential to the biosynthesis of the metabolic facilitator L-carnitine, the neurotransmitter norepinephrine, and the main connective tissue in the body, collagen
  • Ascorbic acid is invaluable to the body for its role as an electron donor, supporting numerous metabolic enzymes in addition to enhancing the body's total antioxidant potential
  • Gluten Free, Non-GMO, Vegan
  • Label images may vary

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From the manufacturer

Product description

Size:1000 mg (120 ct)

Vitamin C is a key compound in the body’s “antioxidant network,” a chain of synergistic, inextricability linked, well-studied antioxidants that includes glutathione (GSH) and vitamin E. When vitamin E uses its antioxidant function in neutralizing free radicals, it also loses this antioxidant function. Vitamin C can change this status; it can regenerate vitamin E back to its native form, and is thought to “spare” glutathione in the body as well. Importantly, when ascorbate donates an electron and becomes itself oxidized, or “consumed,” the ascorbate radical is relatively harmless. In a double-blind, placebo-controlled study in which blood GSH was measured in healthy subjects at several stages, 500 mg of vitamin C taken daily for 2 weeks significantly raised erythrocyte (red blood cell) glutathione levels. The researchers concluded that vitamin C supplementation at that level can benefit the overall antioxidant capacity of the blood. In another study of similar design, 1000 mg of vitamin C taken daily for 4 weeks bolstered vitamin E and glutathione content in erythrocyte cell membranes, compared with placebo. The highest concentrations of vitamin C in the body are found in the central nervous system (in neurons of the brain & spinal cord) and the adrenal glands. Although the presence of ascorbate in neurons is in part explained by its neuromodulatory enzyme activity, its high concentration suggests that vitamin C is so greatly retained by neurons in order to address the higher rates of oxidative metabolism experienced by the brain. This has led to the conclusion that under normal conditions, vitamin C helps safeguard the integrity of neurons (and therefore the brain), largely through neutralization of the free radicals of reactive oxygen species (ROS). Low levels of blood vitamin C and the resulting accumulation of ROS are thought to be detrimental—especially to aging populations.


Product details

Size: 1000 mg (120 ct)
  • Product Dimensions: 2.6 x 2.6 x 5 inches ; 6.4 ounces
  • Shipping Weight: 6.4 ounces (View shipping rates and policies)
  • Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B005CD3J4O
  • UPC: 753950002579
  • Item model number: DRB-00257
  • Average Customer Review: 4.6 out of 5 stars 190 customer reviews
  • Amazon Best Sellers Rank: #1,903 in Health & Household (See Top 100 in Health & Household)
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Important information

Ingredients
Vitamin C (as Qualii-C ascorbic acid), modified cellulose (vegetarian capsule).

Directions
Take 1 capsule daily, with or without food. Store in a cool dry place.

Legal Disclaimer
this price is for one bottle of 120 caps

Actual product packaging and materials may contain more and different information than what is shown on our website. We recommend that you do not rely solely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. Please see our full disclaimer below.

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Customer Rating 4 out of 5 stars (190) 4 out of 5 stars (797) 5 out of 5 stars (19) 4 out of 5 stars (33) 4 out of 5 stars (64) 4 out of 5 stars (406)
Price $13.99 $14.06 $30.39 $14.99 $18.30 $17.99
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Directions Take 1 capsule daily, with or without food. Store in a cool dry place. As a dietary supplement, take 1 tablet 1 to 2 times daily, preferably with meals. Take 1 or 2 capsules once or twice daily, preferably without food. Higher intakes may be useful, as recommended by a nutritionally-informed physician. Take 1/4 to 1 heaping teaspoon (approx. 1 gram to 4 grams) once or twice daily, preferably without food. Higher intakes may be useful, as recommended by a nutritionally-informed physician. Stir powder into an 8 ounce glass of water or juice, or add to smoothies. For 500mg of Vitamin C take 1 rounded teaspoon daily. For 1000mg take 1 rounded teaspoon twice daily. Suggested use: As a dietary supplement , adults and children 12 or more years of age, 1 tablet daily or as directed by a health professional.
Item Dimensions 2.63 x 2.63 x 5 in 5 x 6 x 4 in 3.5 x 3.5 x 6.63 in 3.19 x 3.19 x 4.5 in 5 x 6 x 4 in
Safety Warning As with any dietary or herbal supplement, you should advise your health care practitioner of the use of this product. If you are nursing, pregnant, or considering pregnancy, you should consult your health care practitioner prior to using this product. Keep out of reach of children. Consult a healthcare professional before use. Keep out of reach of children. Consult a healthcare professional before taking this product if you are pregnant or nursing.
Size 1000 mg (120 ct) 250 servings 360 Veggie Caps 250g 120 g 250 Tablets

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March 5, 2016
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Disclaimer: While we work to ensure that product information is correct, on occasion manufacturers may alter their ingredient lists. Actual product packaging and materials may contain more and/or different information than that shown on our Web site. We recommend that you do not solely rely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. For additional information about a product, please contact the manufacturer. Content on this site is for reference purposes and is not intended to substitute for advice given by a physician, pharmacist, or other licensed health-care professional. You should not use this information as self-diagnosis or for treating a health problem or disease. Contact your health-care provider immediately if you suspect that you have a medical problem. Information and statements regarding dietary supplements have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease or health condition. Amazon.com assumes no liability for inaccuracies or misstatements about products.