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AlphaSorb-C 500

NOW
4.8
(395 ratings)
Vitamin C 500 mg
Rutin 25 mg
Acerola 25 mg
Flavonoid (mixture) 100 mg
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Score93

A high-absorption vitamin C complex designed for maximum gastric tolerance and cellular uptake.

How scoring works
Quantity:180 Capsule(s)(180 servings)
Goals:
General Health
Immunity
Anti-Inflammatory Support
Skin Health
Vision Support

Score 93

A high-absorption vitamin C complex designed for maximum gastric tolerance and cellular uptake.

How scoring works
$18.22($0.10 per serving)
Vitacost
$ 22.49
Daily Vita
$ 20.30
Pure Formulas
$ 20.18
iHerb
$ 18.22
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Analysis

This supplement features AlphaSorb-C, which includes threonic acid metabolites to help the vitamin C enter your cells more effectively. It is backed by botanical cofactors like rutin and acerola, which support the strength of your blood vessels and your body's antioxidant network.

Because it is buffered with calcium, it avoids the acidity that often causes heartburn with cheaper supplements. This makes it a practical option for long-term daily use to support collagen synthesis and immune readiness.

Pros

  • Exceptional gastric tolerance
  • High cellular retention due to threonic acid
  • Includes citrus bioflavonoids for synergy
  • Excellent value for an advanced C formula

Cons

  • Requires consistent daily use for best results
  • Does not contain zinc or D3 for full immune support
  • Botanical extracts are for support only, not high-dose therapy

Warnings

  • Consult a professional if you have a history of calcium-based kidney stones

Nutrient quality

92 Highest impact

Advanced buffered form utilizing threonic acid promotes better absorption and longer biological activity of Vitamin C. Multi-botanical cofactor blend provides a synergistic antioxidant profile that supports vascular and immune health.

Ingredient transparency

94 Highest impact

Clear milligram listings for all active components allow users to track their nutrient intake with high precision. Inclusion of specific chemical names like Calcium Ascorbate and Threonic Acid enhances transparency regarding the formula's quality.

Customer satisfaction

93 Highest impact

Consistently high average rating reflects excellent user experience and perceived efficacy for immune health. Review volume is sufficient to confirm that the product is well-tolerated by a broad demographic of consumers.

Value for money

90 Highest impact

Pricing is highly competitive for a professional-grade formula utilizing enhanced absorption technology. The combination of buffered mineral forms and multiple botanical cofactors provides excellent value for the investment.

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Goals

Impact
Highest effect
A+ Goal FitA+ Strength of SupportB- CoverageA+ Formula Quality

AlphaSorb-C 500 features a patented metabolite-enhanced buffered Calcium Ascorbate for superior gastric tolerance and systemic retention. These ingredients, alongside citrus bioflavonoids and acerola, support foundational antioxidant defense and immune readiness.

The 500mg dose per capsule ensures high absorption efficiency while protecting the digestive system from acidity. This formula mimics natural nutrient complexity by including multiple botanical co-factors that support the utilization of Vitamin C.

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Impact
Highest effect
A+ Goal FitA+ Strength of SupportC CoverageA+ Formula Quality

Utilizes a metabolite-enhanced buffered form of Vitamin C to support antioxidant defense and various immune cell functions. This high-potency formula delivers a meaningful dose of foundational nutrients for cell membrane protection.

Vitamin C is provided at a 500 mg dose to provide meaningful cellular protection and functional support. The professional-grade formula focuses deeply on a single component and does not address other immune signaling pathways like those involving Vitamin D or Zinc.

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Impact
Highest effect
A- Goal FitA+ Strength of SupportB+ CoverageA Formula Quality

This premium formulation utilizes an advanced buffered Vitamin C complex enhanced with threonic acid metabolites for superior cellular uptake and retention. It is further fortified with rutin and quercetin to provide broad-spectrum antioxidant support and manage inflammatory markers.

Rutin and quercetin appear well-aligned for stabilizing cell membranes and reducing vascular permeability. The non-acidic complex is specifically designed to provide high-potency support while remaining exceptionally gentle on the digestive tract.

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Impact
Highest effect
A- Goal FitA Strength of SupportC- CoverageA+ Formula Quality

Vitamin C and botanical bioflavonoids provide necessary cofactors for collagen synthesis and antioxidant defense. This combination supports the structural integrity of the dermis and enhances resilience against environmental stress.

Patented metabolite-enhanced forms improve biological retention and are exceptionally gentle on the stomach. The focus on a single nutrient pathway prevents this from being a complete solution for skin moisture and lipid barrier health.

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Impact
High effect
D+ Goal FitB Strength of SupportD- CoverageA- Formula Quality

Vitamin C and Rutin are combined in a buffered formula to support ocular antioxidant defense and capillary strength. The inclusion of bioflavonoids from multiple sources enhances the utilization of the vitamin.

Impact on macular health is limited by the omission of lutein and zeaxanthin. Foundational vision minerals like zinc are also missing from this focused antioxidant complex.

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Ingredients

IngredientAmount per serving
Vitamin C (Threonic Acid enhanced buffered Calcium Ascorbate)
500 mg
Calcium (Calcium Ascorbate)
60 mg
Transport C-PLUS
650 mg
Citrus Bioflavonoid Complex
100 mg
Acerola powder
25 mg
Rose Hips
25 mg
Rutin powder (Sophora japonica)
25 mg
Gluten Free Adults 18–50 Vegan Dairy Free Vegetarian
Report overview
A- Active Ingredient Quality & BioavailabilityA Dose, Safety & Label TransparencyA+ Value
AlphaSorb-C 500 is a professional-grade buffered formula designed for those who need maximum stomach comfort and high absorption. It features Threonic Acid metabolites and plant-based bioflavonoids to mimic natural food sources.
B- Active Ingredient Quality & BioavailabilityD- Dose, Safety & Label TransparencyB Value
AlphaSorb-C provides a highly bioavailable Vitamin C with a supporting 25mg dose of rutin from Sophora japonica. It is ideal for those focused on nutrient absorption rather than high-potency rutin therapy.
Acerola · 25 mg OverallScore29
F Active Ingredient Quality & BioavailabilityF Dose, Safety & Label TransparencyD+ Value
This enhanced Vitamin C formula uses threonic acid to boost absorption and retention in the body. It includes a small amount of whole-food acerola and bioflavonoids for balanced nutritional support. I recommend this for individuals looking for a scientifically advanced, long-lasting Vitamin C source.
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