USD ($)
  • Select currency:
Register Customers Only Offers Cart
Earn Reward Points
9am to 5pm PST / Monday-Friday


Compare up to 4 items:
  • compare item
  • compare item
  • compare item
  • compare item
Systemic Vitamin C
Mouse over or click to enlarge

Systemic Vitamin C

Optimized Antioxidant Activity

from Source Naturals
Retail $16.89
 you save 30%
Size: 120 Capsules - 500 mg
Item: 5080
Weight: 0.37 lbs
Points: 59

Systemic C is an enhanced, supercharged vitamin C that provides superior antioxidant protection. The beneficial effects of vitamin C are energized in this unique formula, which is designed to make more vitamin C available for immune support, heart health, healthy aging, and free radical scavenging.

  • Description
  • Supplement Facts & Suggested Use
  • Reviews

Systemic C - Enhanced Non-Acidic Vitamin C

  • HN-all-natural
  • MG-gluten-free
  • ND-dairy-free
  • OS-soy-free
  • PY-yeast-free

Systemic C is an enhanced, supercharged Vitamin C that provides superior antioxidant protection. The beneficial effects of Vitamin C are energized in this unique formula, which is designed to make more Vitamin C available for immune support, heart health, healthy aging, and free radical scavenging.

The Benefits of Vitamin C

The benefits of Vitamin C are well known and clinically proven. It is one of the most important nutrients ever discovered for our health. It affects our energy, joints, aging, brain, skin, bones, and the body’s detoxification process. It also helps support our heart and cardiovascular system due to its powerful antioxidant properties. It is an unparalleled key to health and well-being.

The evidence and scientific research continue to mount in worldwide clinical exams and tests: Vitamin C is one of the most important benefits to your health available today. Vitamin C can:

  • Help protect cells and DNA†
  • Contribute to a healthy immune response†
  • Help increase metabolism and detoxification†
  • Act as an antioxidant for healthy aging†
  • Increase circulation†
  • Help improve skin health†
  • Supports structure and connective tissue

Superior Antioxidant Protection of Systemic C

For decades, the conventional means of obtaining sufficient Vitamin C was through ascorbic acid. Now, however, because of the importance of Vitamin C, scientists may have discovered a means of helping the body obtain more Vitamin C for increased antioxidant protection. Nutrients added to Vitamin C may “recycle” Vitamin C that has been spent (oxidized) after neutralizing free radicals, by putting it back to work protecting your cells.

Systemic C from Source Naturals is an enhanced, non-acidic Vitamin C designed for superior antioxidant protection. After Vitamin C carries out its antioxidant function of neutralizing free radicals, it is usually oxidized and spent. However, the unique blends of other antioxidant compounds in Systemic C help to reactivate and recycle the Vitamin C in the body. Reactivating Vitamin C allows this important vitamin to continue its vital functions, providing the body with increased antioxidant activity.

Systemic C combines Vitamin C from calcium ascorbate with highly powerful anti-oxidant compounds that are intended to heighten its benefits:

Alpha-Lipoic Acid - a renowned antioxidant, scavenges hydroxyl radicals, nitric oxide, peroxynitrite, hydrogen peroxide, hypochlorite, superoxide and peroxyl free radicals.

N-Acetyl Cysteine - replenishes intracellular glutathione depleted by free radicals such as hydrogen peroxide and hydroxyl radicals.

Quercetin - has metal-chelating and stabilizing properties. It is also a strong inhibitor of lipid peroxidation through scavenging of peroxide radicals, which strongly oxidize and deplete ascorbic acid.

Grape Seed Extract - The proanthocyanidins in grape seed extract inhibit the production of free radicals, thereby increasing the function of the cells’ own antioxidants, such as glutathione and ascorbic acid.

Free Radicals and Antioxidants

Modern life, with our constant bombardment by pollutants, excess sunlight, unnatural foods, chemical toxins, and electromagnetic radiation, produces damaging free radicals. Free radicals are also natural byproducts of such physical processes as respiration and mitochondrial energy generation.

Free radicals are unstable molecules. Because they seek stability, they damage cells and tissues as they steal electrons from other, healthy molecules. As more molecules damage others, a cascade effect begins. This can result in signs of aging, cellular imbalances and many other health concerns. According to an article in the Journal of Rheumatology, “increased free radical levels may be responsible for the development of fibromyalgia”, a condition that affects an estimated 10 million people in the U.S alone.

Antioxidants combat free radials, directing the body toward greater health. Taking antioxidants like those included in Systemic C can help boost immune function, while protecting our cells and DNA from free radical damage. These antioxidants can also serve as a preventative measure against many different health issues from colds and flu to more serious disorders like cardiovascular disease.

There seem to be new strains of colds and flu each year. Additionally, stress can take a huge toll on our immune systems. Taking Systemic C along with other immune enhancing nutrients can help you and your family stay healthy. Should you begin to experience the onset of a cold or flu, you can also take a colloidal silver such as Colloidal Defense to help prevent or simply shorten the severity and duration of either one that you may have been exposed to. Please read our article “Staying Healthy for the Holidays” to learn more.

Further Reading

Johns Hopkins Study on Vitamin C

Topical Antioxidants: The Secret to Younger, Healthier Skin
Summer Skin That Glows ... Naturally
Boost Your Immune System During the Winter Season
9 Simple Tips You Can Follow to Stay Healthy During the Holidays


  1. Jones, W, et al. (2002) Uptake, Recycling and Antioxidant Actions of Alpha-Lipoic Acid in Endothelial Cells. Free Radical Biology and Medicine. 33:83-93.
  2. May, JM, et al. (2004) Human Erythrocyte Recycling of Ascorbic Acid. Journal of Biological Chemistry. 279:14975-14982.
  3. Baker, EM, et al. (1966) Ascorbic Acid Metabolism in Man. American Journal of Clinical Nutrition. 19:371-378.
  4. Lo Nostro, P (1997) Chemical and Biological Properties of Vitamin C: Supramolecular Aggregates from Vitamin C Derivatives: Structure and Properties. Internet Journal of Science Biological Chemistry. Supramolecular Aggregates from Vitamin C Derivatives

Supplement Facts - Systemic Vitamin C

Capsules per Container: 120 Capsules
Serving Size: Two (2) Capsules
Servings per Container: 60

  Amount per Serving % Daily Value
Calories 5  
Total Carboyhydrates 1 g <1%
Vitamin C (as calcium ascorbate) 1000 mg 1667%
Calcium (as calcium ascorbate) 110 mg 11%
N-Acetyl Cysteine 120 mg *
alpha-Lipoic Acid 100 mg *
Quercetin 50 mg *
Bioflavonoids 40 mg *
Grape Seed Extract (Proanthodyn) 30 mg *

*Daily value not established.

Other Ingredients: gelatin (capsule), colloidal silicon dioxide, and magnesium stearate.

Free of: Yeast, dairy, egg, gluten, wheat, sugar, starch, salt, preservatives, or artificial color, fragrance, or flavor.

Suggested Use: Two capsules, one to two times daily, or as directed by your healthcare professional.

Warning: If you are are pregnant, may become pregnant, breastfeeding, or taking any prescription drug, consult your healthcare professional before using this product.

Manufactured by Source Naturals.

† These statements have not been evaluated by the U.S. Food and Drug Administration (FDA) or This product is not intended to diagnose, treat, cure or prevent any disease. The information provided on this site is for informational purposes only and is not intended as a substitute for advice from your physician or other health care professional or any information contained on or in any product label or packaging. You should not use the information on this site for diagnosis or treatment of any health problem or for prescription of any medication or other treatment. You should consult with a health care professional before starting any diet, exercise or supplementation program, before taking any medication, or if you have or suspect you might have a health problem, or are pregnant. When you receive an item, carefully read all labels, warnings, and directions before use. Actual product packaging and materials may contain more and/or different information than shown on this website.

Reviews from
Reseller Ratings

Reviews from
Shopper Approved

Shopper Approved - Comments from real customers!