NOW Foods C-1000 Zinc Immune vs NOW Foods C-500 Calcium Ascorbate
Side-by-side supplement facts comparison
C-500, Calcium Ascorbate-C, 250 Capsules
Vitamin C is a water soluble nutrient well known for its vital role in the immune system. Vitamin C is also necessary for the production of collagen (a structural protein in connective tissue) and is therefore important for skin, bone, and joint health. Vitamin C is needed for amino acid metabolism, neurotransmitter synthesis, and the utilization of many nutrients, such as folic acid and iron. It is also a highly effective antioxidant that can protect the body's cells and molecules from damage by free radicals and reactive oxygen molecules generated during normal metabolism and exposure to environmental stressors. This product supplies Calcium Ascorbate, a buffered form of Vitamin C that is bioavailable and non-acidic; it is enhanced with Bioflavonoids, which work synergistically with Vitamin C. Some scientific evidence suggests that consumption of antioxidant vitamins may reduce the risk of certain forms of cancer. However, FDA has determined that this evidence is limited and not conclusive.

C-1000, Zinc Immune, 90 Veg Capsules
C-1000 Zinc Immune combines vitamin C with zinc for powerful immune system support. This product utilizes TRAACS™ Zinc Bisglycinate, a form of zinc that has been shown in clinical studies to have superior bioavailability compared to other forms of supplemental zinc.

At a Glance
Processing analysis…
Ingredient Comparison
Total mg Per Serving
C-500, Calcium Ascorbate-C, 250 Capsules
C-1000, Zinc Immune, 90 Veg Capsules
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0 servings per container
0 servings per container

C-500, Calcium Ascorbate-C, 250 Capsules
NOW Foods · 1 Capsule
C-500, Calcium Ascorbate-C, 250 Capsules
NOW Foods · 1 Capsule
| Ingredient | Amount | DV |
|---|---|---|
Vitamin C (from Calcium Ascorbate) | 500 mg | 556% |
Calcium (from Calcium Ascorbate) | 55 mg | 4% |
Citrus Bioflavonoid Complex | 10 mg | † |
† Daily Value not established

C-1000, Zinc Immune, 90 Veg Capsules
NOW Foods · 1 Veg Capsule
C-1000, Zinc Immune, 90 Veg Capsules
NOW Foods · 1 Veg Capsule
| Ingredient | Amount | DV |
|---|---|---|
Vitamin C (as Ascorbic Acid) | 1 g (1,000 mg) | 1111% |
Zinc (elemental) (from 75 mg Zinc Bisglycinate) (TRAACS™) | 15 mg | 136% |
† Daily Value not established
Other Ingredients Analysis
Analysis of inactive ingredients for dietary restrictions, allergens, and artificial additives.

C-500, Calcium Ascorbate-C, 250 Capsules
NOW Foods
Excellent
Other Ingredients
Gelatin (capsule), cellulose and magnesium stearate (vegetable source).Warnings
Positives

C-1000, Zinc Immune, 90 Veg Capsules
NOW Foods
Excellent
Other Ingredients
Hypromellose (cellulose capsule), hydroxypropyl cellulose, stearic acid (vegetable source) and silicon dioxide.Positives
How Clean Score is Calculated
Serving Information
| Detail | C-500, Calcium Ascorbate-C, 250 Capsules | C-1000, Zinc Immune, 90 Veg Capsules |
|---|---|---|
| Serving Size | 1 Capsule | 1 Veg Capsule |
| Servings Per Container | — | — |
| Package Quantity | 250 count | 90 count |
Certifications & Claims
C-500, Calcium Ascorbate-C, 250 Capsules
C-1000, Zinc Immune, 90 Veg Capsules