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Buffered C-1000 Complex

NOW
4.7
★ ★ ★ ★ ★
(7824 ratings)
Rutin 50 mg
Acerola 50 mg
Flavonoid (mixture) 250 mg
Product Image
Score92

A high-potency, stomach-friendly vitamin C complex reinforced with natural bioflavonoids and rutin.

How scoring works
Quantity:90 Tablet(s) • (90 servings)
Goals:

Score 92

A high-potency, stomach-friendly vitamin C complex reinforced with natural bioflavonoids and rutin.

How scoring works

Also available as

1 option
180 servings Acerola 50 mg, Rutin 50 mg +1 more • 180 Tablet(s) • 180 servings $20.80 ($0.11 per serving)
$11.60($0.12 per serving)
Vitacost
$ 13.33
Daily Vita
$ 11.60
Amazon
$ 11.79
Pure Formulas
$ 11.53
iHerb
$ 12.24
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Analysis

This product uses calcium ascorbate, which is a buffered form of vitamin C that is less acidic than standard ascorbic acid. This makes it much gentler on the digestive lining while still providing a high 1,000 mg dose. It also includes acerola and rutin, which provide natural cofactors found in whole fruits.

The inclusion of citrus bioflavonoids may help your body better utilize the vitamin C for immune and skin support. It is a great choice for someone who wants to take high doses of antioxidants without worrying about gastric upset. The tablet form is simple and provides a full three-month supply in one bottle.

Pros

  • Gentle on the stomach
  • High 1,000 mg dose
  • Includes natural bioflavonoid cofactors
  • Economical price point
  • Supports immune and tissue health

Cons

  • Tablet size may be large
  • Rutin and acerola amounts are low
  • Not a 100% whole-food source

Warnings

  • Take with food for best results
  • Consult if you have history of kidney stones
  • Check for citrus allergies

Nutrient quality

90 Highest impact

Buffered mineral ascorbate form ensures high-dose Vitamin C can be consumed without common acidic side effects. Inclusion of synergistic bioflavonoids like rutin and acerola supports the structural integrity of blood vessels and improves overall nutrient utility.

Ingredient transparency

92 Highest impact

Dosages for the primary active and all supporting bioflavonoids are explicitly detailed for consumer clarity. Labeling identifies specific botanical sources for cofactors like rutin, enhancing trust in the ingredient quality.

Customer satisfaction

94 Highest impact

Extremely high review volume and strong average ratings demonstrate long-term product efficacy and brand loyalty. Users frequently report excellent tolerability for the buffered form, especially when compared to standard ascorbic acid.

Value for money

91 Highest impact

Exceptional value is provided by the combination of a high-dose buffered form and multiple botanical cofactors. Very low cost per serving makes this an ideal choice for budget-conscious individuals needing high-potency support.

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Ingredients

IngredientAmount per serving
Vitamin C (Calcium Ascorbate)
 1 Gram(s)
Calcium (Calcium Ascorbate)
 100 mg
Citrus Bioflavonoid Complex
250 mg
Acerola powder
50 mg
Rutin powder (Sophora japonica)
 50 mg
Gluten Free Adults 18–50 Vegan Kosher Dairy Free Vegetarian
Report overview
Rutin (Sophora japonica) · 50 mg OverallScore61
B- Active Ingredient Quality & BioavailabilityD- Dose, Safety & Label TransparencyB Value
This buffered Vitamin C complex provides 50mg of rutin from Sophora japonica. It is a gentle and well-tolerated formula that offers maintenance-level antioxidant support.
View ingredientView products
Acerola · 50 mg OverallScore28
F Active Ingredient Quality & BioavailabilityD Dose, Safety & Label TransparencyF Value
This high-potency Vitamin C complex is primarily based on buffered calcium ascorbate with a small addition of acerola. It is a cost-effective choice for those needing large doses of Vitamin C without gastric irritation. For a purely natural fruit source, you might consider other options in this collection.
View ingredientView products
92 Value

Buffered C-1000 Complex

NOW
4.7
★★★★★
(7939 ratings)
This bulk container provides the exact same high-potency formula of calcium ascorbate and acerola but with better cost-effectiveness. It is an ideal choice for maintaining long-term antioxidant habits without changing the nutrient profile.
Other sellers (3)
97 Value

Ester-C Plus 1000 mg Vitamin C

Solgar
4.9
★★★★★
(187 ratings)
Ester-C provides a highly bioavailable form of vitamin C that is gentle on sensitive digestive systems. This large-count format offers premium quality and improved absorption efficiency at a competitive value.
Other sellers (2)
97 Value

Biorutin 1000 mg

NaturesPlus
4.8
★★★★★
(2149 ratings)
A massive 1000 mg complex of citrus bioflavonoids and rutin supports vascular and capillary health far beyond standard vitamin C tablets. This formulation provides exceptional botanical potency for those focused on bioflavonoid intake.
Other sellers (2)
98 Performance

Ester-C Plus 1000 mg Vitamin C

Solgar
4.8
★★★★★
(11299 ratings)
Patented Ester-C calcium ascorbate supports superior cellular retention and remains non-acidic for stomach comfort. This formula includes higher amounts of citrus bioflavonoids and acerola to more effectively mimic natural food profiles.
Other sellers (0)
94 Performance

Super C Complex

NaturesPlus
4.7
★★★★★
(12492 ratings)
Sophora japonica provides 100 mg of rutin, which is double the amount in the original tablet. The inclusion of hesperidin and rose hips further supports a robust antioxidant profile for vascular defense.
Other sellers (1)
92 Performance

AlphaSorb-C 500

NOW
4.8
★★★★★
(395 ratings)
Threonic Acid enhanced calcium ascorbate is used to support improved cellular uptake and absorption. The addition of Transport C-PLUS technology assists in maintaining sustained antioxidant levels throughout the day.
Other sellers (3)
94 Budget

C-1000 With 100 mg Of Bioflavonoids

NOW
4.8
★★★★★
(34458 ratings)
Sophora japonica provides a supportive dose of rutin alongside a high-potency gram of vitamin C. This combination supports antioxidant status using botanical cofactors at a very accessible price point.
Other sellers (3)
95 Budget

Rutin 500 mg

Thompson
4.8
★★★★★
(10426 ratings)
Rutin concentrate at 500 mg offers a much higher therapeutic dose for vascular integrity compared to the trace amounts in the original product. This selection provides focused bioflavonoid support for cardiovascular wellness.
Other sellers (3)
92 Budget

Buffered Vitamin C 500 mg

Solaray
4.9
★★★★★
(5495 ratings)
Buffered mineral ascorbates are paired with rutin and hesperidin concentrates for enhanced synergy. This bulk-sized option maintains a gentle digestive profile while providing a broad spectrum of bioflavonoid cofactors.
Other sellers (2)
92 Value

Buffered C-1000 Complex

NOW
4.7
★★★★★
(7939 ratings)
This bulk container provides the exact same high-potency formula of calcium ascorbate and acerola but with better cost-effectiveness. It is an ideal choice for maintaining long-term antioxidant habits without changing the nutrient profile.
Other sellers (3)
97 Value

Ester-C Plus 1000 mg Vitamin C

Solgar
4.9
★★★★★
(187 ratings)
Ester-C provides a highly bioavailable form of vitamin C that is gentle on sensitive digestive systems. This large-count format offers premium quality and improved absorption efficiency at a competitive value.
Other sellers (2)
97 Value

Biorutin 1000 mg

NaturesPlus
4.8
★★★★★
(2149 ratings)
A massive 1000 mg complex of citrus bioflavonoids and rutin supports vascular and capillary health far beyond standard vitamin C tablets. This formulation provides exceptional botanical potency for those focused on bioflavonoid intake.
Other sellers (2)
98 Performance

Ester-C Plus 1000 mg Vitamin C

Solgar
4.8
★★★★★
(11299 ratings)
Patented Ester-C calcium ascorbate supports superior cellular retention and remains non-acidic for stomach comfort. This formula includes higher amounts of citrus bioflavonoids and acerola to more effectively mimic natural food profiles.
Other sellers (0)
94 Performance

Super C Complex

NaturesPlus
4.7
★★★★★
(12492 ratings)
Sophora japonica provides 100 mg of rutin, which is double the amount in the original tablet. The inclusion of hesperidin and rose hips further supports a robust antioxidant profile for vascular defense.
Other sellers (1)
92 Performance

AlphaSorb-C 500

NOW
4.8
★★★★★
(395 ratings)
Threonic Acid enhanced calcium ascorbate is used to support improved cellular uptake and absorption. The addition of Transport C-PLUS technology assists in maintaining sustained antioxidant levels throughout the day.
Other sellers (3)
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