NOW AlphaSorb-C 500 supplement bottle
NOW

AlphaSorb-C 500

What We Researched
7 active ingredients analyzed · 5 inactive ingredients decoded · 5 brand certifications checked · 1 retailer compared · Last updated: Mar 2026
80
Product Score Good
89
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin C (as Threonic Acid enhanced buffered Calcium Ascorbate) 500 mg 556%
Calcium (as Calcium Ascorbate) 60 mg 5%
Transport C-PLUS 650 mg
Citrus Bioflavonoid Complex 100 mg
Acerola powder 25 mg
Rose Hips 25 mg
Rutin powder (as Sophora japonica) 25 mg
Bioavailability Very Good

Absorption Rating

  • Vitamin C (as Threonic Acid enhanced buffered Calcium Ascorbate) Good
  • Calcium (as Calcium Ascorbate) Good
  • Acerola powder Good
  • Rose Hips Fair
  • Rutin powder (as Sophora japonica) Fair
Other Ingredients Excellent

Fillers & Additives

  • Cellulose
  • Cellulose Powder
  • Stearic Acid
  • Magnesium Stearate
  • Silica
Efficacy Fair

Dosage Analysis

  • Vitamin C (as Threonic Acid enhanced buffered Calcium Ascorbate) 500 mg Effective
  • Calcium (as Calcium Ascorbate) 60 mg Under-dosed
  • Acerola powder 25 mg Under-dosed
  • Rose Hips 25 mg Under-dosed
  • Rutin powder (as Sophora japonica) 25 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin C (as Threonic Acid enhanced buffered Calcium Ascorbate) 500 mg 556%
Calcium (as Calcium Ascorbate) 60 mg 5%
Transport C-PLUS 650 mg
Citrus Bioflavonoid Complex 100 mg
Acerola powder 25 mg
Rose Hips 25 mg
Rutin powder (as Sophora japonica) 25 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Cellulose Safe

Provides bulk and structure in tablets and capsules.

Cellulose Powder Safe

Adds bulk and improves flow during manufacturing.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Price Comparison

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
NOW

Founded 1968 · Bloomingdale, Illinois, USA · 53 products · nowfoods.com

Certifications

5 certifications
Informed Sport Verified Source
Npa Gmp Verified Source
Fda Gmp Inspections Verified Source
Non Gmo Project Verified Source
Usda Organic Verified Source

Transparency

3 claims
Third Party Testing Claim — Verified Source
Testing Lab Disclosure — Claimed
In House Testing — Verified Source
Related Supplements
Frequently Asked Questions
Is NOW AlphaSorb-C 500 a good supplement?

NOW AlphaSorb-C 500 received a product quality score of 80/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 7 active ingredients All 5 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, NOW, holds a brand trust score of 89/100 with 5 verified certifications including Informed Sport, Npa Gmp, Fda Gmp Inspections, Non Gmo Project.

What are the ingredients in NOW AlphaSorb-C 500?

NOW AlphaSorb-C 500 contains 7 active ingredients: Vitamin C (as Threonic Acid enhanced buffered Calcium Ascorbate) (500 mg), Calcium (as Calcium Ascorbate) (60 mg), Transport C-PLUS (650 mg), Citrus Bioflavonoid Complex (100 mg), Acerola powder (25 mg), Rose Hips (25 mg), and 1 more. Notable high-dose ingredients include Vitamin C at 556% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is NOW AlphaSorb-C 500 safe to take?

NOW AlphaSorb-C 500 has been analyzed for ingredient safety across all its components. All 5 inactive ingredients — including capsule materials, fillers, and binders — are rated safe based on regulatory data and published safety research. This is a clean formulation with no controversial additives. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is NOW a trustworthy supplement brand?

NOW receives a brand trust score of 89/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1968 and headquartered in Bloomingdale, Illinois, USA, the company offers 53 products in their lineup. They hold 5 verified certifications including Informed Sport, Npa Gmp, Fda Gmp Inspections, Non Gmo Project. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. No regulatory violations or FDA warning letters were found in our research.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.