Source Naturals Metabolic C, 1000 mg supplement bottle
Source Naturals

Metabolic C, 1000 mg

What We Researched
2 active ingredients analyzed · 7 inactive ingredients decoded · 1 brand certification checked · 1 retailer compared · Last updated: Mar 2026
87
Product Score Good
66
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin C 1,000 mg 1,111%
Citrus Bioflavonoid Complex 200 mg
Bioavailability Fair

Absorption Rating

  • Vitamin C Fair
Other Ingredients Excellent

Fillers & Additives

  • Silicified Microcrystalline Cellulose
  • Dibasic Calcium Phosphate
  • Stearic Acid
  • Hydroxypropyl Cellulose
  • Silica
  • Modified Cellulose Gum
  • Magnesium Stearate
Efficacy Excellent

Dosage Analysis

  • Vitamin C 1,000 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin C 1,000 mg 1,111%
Citrus Bioflavonoid Complex 200 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Silicified Microcrystalline Cellulose Generally_safe

It is used as a filler and flow agent in supplements.

Dibasic Calcium Phosphate Generally_safe

It is used as a filler and to improve tablet hardness.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Hydroxypropyl Cellulose Safe

Binds tablet ingredients and can form tablet coatings.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Modified Cellulose Gum Generally_safe

It is used to improve the texture and stability of products.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

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
Source Naturals

Founded 1982 · Scotts Valley, CA, USA · 837 products · sourcenaturals.com/

Certifications

1 certification
Fda Gmp Inspections Verified Source

Transparency

2 claims
Third Party Testing Claim — Claimed Source
In House Testing — Verified Source
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Frequently Asked Questions
Is Source Naturals Metabolic C, 1000 mg a good supplement?

Source Naturals Metabolic C, 1000 mg received a product quality score of 87/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 2 active ingredients Of the 7 inactive ingredients, 4 are rated safe and 0 are flagged for review. The manufacturer, Source Naturals, holds a brand trust score of 66/100 with 1 verified certifications including Fda Gmp Inspections.

What are the ingredients in Source Naturals Metabolic C, 1000 mg?

Source Naturals Metabolic C, 1000 mg contains 2 active ingredients: Vitamin C (1,000 mg), Citrus Bioflavonoid Complex (200 mg). Notable high-dose ingredients include Vitamin C at 1,111% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Source Naturals Metabolic C, 1000 mg safe to take?

Source Naturals Metabolic C, 1000 mg has been analyzed for ingredient safety across all its components. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Source Naturals a trustworthy supplement brand?

Source Naturals receives a brand trust score of 66/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1982 and headquartered in Scotts Valley, CA, USA, the company offers 837 products in their lineup. They hold 1 verified certifications including Fda Gmp Inspections. 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.