Quantum Nutrition Labs Vitamin C supplement bottle
What We Researched
2 active ingredients analyzed · 3 inactive ingredients decoded · 1 brand certification checked · 1 retailer compared · Last updated: Mar 2026
87
Product Score Good
63
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin C (from Vitamin C Fractions Extracted from Amla) 135 mg 150%
Super C-Plex Blend 350 mg
Bioavailability Fair

Absorption Rating

  • Vitamin C (from Vitamin C Fractions Extracted from Amla) Fair
Other Ingredients Excellent

Fillers & Additives

  • Organic Rice Concentrate (Oryza sativa)
  • Capsule (cellulose, water)
  • Organic Stabilized Jasmine Rice Bran
Efficacy Excellent

Dosage Analysis

  • Vitamin C (from Vitamin C Fractions Extracted from Amla) 135 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin C (from Vitamin C Fractions Extracted from Amla) 135 mg 150%
Super C-Plex Blend 350 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

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
Quantum Nutrition Labs

Founded 1999 · Austin, TX, USA · 71 products · qnlabs.com

Certifications

1 certification
Fda Gmp Inspections Verified Source

Transparency

2 claims
Third Party Testing Claim — Claimed
In House Testing — Claimed
Related Supplements
Frequently Asked Questions
Is Quantum Nutrition Labs Vitamin C a good supplement?

Quantum Nutrition Labs Vitamin C received a product quality score of 87/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 2 active ingredients with 30 servings per container. Of the 3 inactive ingredients, 0 are rated safe and 0 are flagged for review. The manufacturer, Quantum Nutrition Labs, holds a brand trust score of 63/100 with 1 verified certifications including Fda Gmp Inspections.

What are the ingredients in Quantum Nutrition Labs Vitamin C?

Quantum Nutrition Labs Vitamin C contains 2 active ingredients: Vitamin C (from Vitamin C Fractions Extracted from Amla) (135 mg), Super C-Plex Blend (350 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Quantum Nutrition Labs Vitamin C safe to take?

Quantum Nutrition Labs Vitamin C 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 Quantum Nutrition Labs a trustworthy supplement brand?

Quantum Nutrition Labs receives a brand trust score of 63/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1999 and headquartered in Austin, TX, USA, the company offers 71 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.

How much vitamin d3 should i take daily?

The optimal dosage depends on your individual health needs, age, sex, and current nutrient levels. Recommended daily amounts are established by health authorities but may vary from therapeutic doses used in clinical research. It's important to check the Supplement Facts label for the exact amount per serving and compare it against the % Daily Value. Some supplements provide mega-doses well above the Daily Value, which may not be necessary and in some cases could be harmful — particularly for fat-soluble vitamins (A, D, E, K) that accumulate in the body. GoodSupp's efficacy analysis evaluates whether a product's dosages align with clinically studied amounts. Always consult your healthcare provider for personalized dosage recommendations.

What does vitamin d do?

This is an important question for supplement consumers. The dietary supplement industry is largely self-regulated, which means product quality, ingredient transparency, and safety practices vary significantly between brands and products. The most reliable way to evaluate any supplement is to check for third-party testing certifications, review the full ingredient list and dosages, and research the brand's regulatory track record. GoodSupp's database of over 250,000 analyzed products provides independent quality scores, ingredient safety ratings, and brand trust reports to help you make evidence-based decisions.

How much vitamin d3 per day for a woman?

The optimal dosage depends on your individual health needs, age, sex, and current nutrient levels. Recommended daily amounts are established by health authorities but may vary from therapeutic doses used in clinical research. It's important to check the Supplement Facts label for the exact amount per serving and compare it against the % Daily Value. Some supplements provide mega-doses well above the Daily Value, which may not be necessary and in some cases could be harmful — particularly for fat-soluble vitamins (A, D, E, K) that accumulate in the body. GoodSupp's efficacy analysis evaluates whether a product's dosages align with clinically studied amounts. Always consult your healthcare provider for personalized dosage recommendations.

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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.