Frontier Co-op Pure Vitamin C Powder, 16 oz (453 g) supplement bottle
Frontier Co-op

Pure Vitamin C Powder, 16 oz (453 g)

What We Researched
1 active ingredient analyzed · 3 brand certifications checked · 1 retailer compared · Last updated: Mar 2026
75
Product Score Fair
81
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin C 838 mg 931%
Bioavailability Fair

Absorption Rating

  • Vitamin C Fair
Other Ingredients Fair

Fillers & Additives

No inactive ingredient data available.

Efficacy Excellent

Dosage Analysis

  • Vitamin C 838 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin C 838 mg 931%

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$22$21$20$19$18 Mar 12 $20.00
iHerb

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

Brand Trust Report
Frontier Co-op

Founded 1976 · Norway, Iowa, USA · 112 products · frontiercoop.com

Certifications

3 certifications
Non Gmo Project Verified Source
Usda Organic Verified Source
Fda Gmp Inspections Verified Source

Transparency

4 claims
Third Party Testing Claim — Verified Source
Testing Lab Disclosure — Claimed
In House Testing — Verified Source

Violation History

2 incidents
Prop 65 Lead2025-06-19Source
Recall Various products manufactured with organic garlic powder sold under Frontier and Simply Organic brands, and one product under the Whole Foods Market brand.2015-03-16Source
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Frequently Asked Questions
Is Frontier Co-op Pure Vitamin C Powder, 16 oz (453 g) a good supplement?

Frontier Co-op Pure Vitamin C Powder, 16 oz (453 g) received a product quality score of 75/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 1 active ingredients with 503 servings per container. The manufacturer, Frontier Co-op, holds a brand trust score of 81/100 with 3 verified certifications including Non Gmo Project, Usda Organic, Fda Gmp Inspections.

What are the ingredients in Frontier Co-op Pure Vitamin C Powder, 16 oz (453 g)?

Frontier Co-op Pure Vitamin C Powder, 16 oz (453 g) contains 1 active ingredients: Vitamin C (838 mg). Notable high-dose ingredients include Vitamin C at 931% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Frontier Co-op Pure Vitamin C Powder, 16 oz (453 g) safe to take?

Frontier Co-op Pure Vitamin C Powder, 16 oz (453 g) 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 Frontier Co-op a trustworthy supplement brand?

Frontier Co-op receives a brand trust score of 81/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1976 and headquartered in Norway, Iowa, USA, the company offers 112 products in their lineup. They hold 3 verified certifications including Non Gmo Project, Usda Organic, Fda Gmp Inspections. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Frontier Co-op has 2 historical regulatory incidents on record, which are factored into the trust score.

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.