Metagenics Ultra Potent-C® Vitamin C, Orange, 90 Chewable Tablets supplement bottle
Metagenics

Ultra Potent-C® Vitamin C, Orange, 90 Chewable Tablets

What We Researched
12 active ingredients analyzed · 8 inactive ingredients decoded · 7 brand certifications checked · 2 retailers compared · Last updated: Mar 2026
76
Product Score Fair
93
Brand Score Excellent

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin C (as Ultra Potent-C®) 250 mg 1,667%
Niacin 17.5 mg 292%
L-Lysine 8 mg
Citrus Bioflavonoid Complex 8 mg
Tetrasodium Pyrophosphate 3 mg
Alpha D-Ribofuranose 3 mg
L-Cysteine 2 mg
Glutathione 1 mg
Bioavailability Very Good

Absorption Rating

  • Vitamin C (as Ultra Potent-C®) Fair
  • Niacin Good
  • L-Lysine Good
  • Tetrasodium Pyrophosphate Good
  • Alpha D-Ribofuranose Good
  • L-Cysteine Good
  • Glutathione Fair
Other Ingredients Excellent

Fillers & Additives

  • Fructose
  • Sorbitol
  • Xylitol
  • Stearic Acid (Vegetable)
  • Natural Flavors
  • Citric Acid
  • Silica
  • Niacinamide
Efficacy Poor

Dosage Analysis

  • Vitamin C (as Ultra Potent-C®) 250 mg Effective
  • Niacin 17.5 mg Effective
  • L-Lysine 8 mg Under-dosed
  • Tetrasodium Pyrophosphate 3 mg Under-dosed
  • Alpha D-Ribofuranose 3 mg Under-dosed
  • L-Cysteine 2 mg Under-dosed
  • Glutathione 1 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Calories 5
Total Carbohydrate 2 g 1%**
Total Sugars 1 g
Includes 1 g Added Sugars 4%**
Vitamin C (as Ultra Potent-C®) 250 mg 1,667%
Niacin 17.5 mg 292%
L-Lysine 8 mg
Citrus Bioflavonoid Complex 8 mg
Tetrasodium Pyrophosphate 3 mg
Alpha D-Ribofuranose 3 mg
L-Cysteine 2 mg
Glutathione 1 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Fructose Generally_safe

It is used as a sweetener.

Sorbitol Safe

Provides sweetness and helps retain moisture in chewables.

Xylitol Safe

Provides sweetness with reduced calorie content. Does not promote tooth decay.

Stearic Acid (Vegetable) Generally_safe

It is used to improve powder flow and prevent sticking during manufacturing.

Natural Flavors Safe

Improves taste of chewable, gummy, or liquid supplements.

Citric Acid Safe

Adds tartness and acts as a natural preservative. Also aids in ingredient stability.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Niacinamide Safe

It is included for its potential health benefits.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$51$50$49$48$47 Mar 12 $49.00
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
Metagenics

Founded 1983 · Aliso Viejo, California, United States · 185 products · metagenics.com

Certifications

7 certifications
B Corp Certified Verified Source
Consumerlab Verified
Gluten Free Gfco Verified Source
Non Gmo Project Verified Source
Fda Gmp Inspections Verified Source
Nsf Gmp Verified Source
Usp Verified Verified Source

Transparency

4 claims
Third Party Testing Claim — Verified Source
Coa Availability — Claimed Source
In House Testing — Verified Source

Violation History

3 incidents
Fda Warning A structure/function claim for 'Metagenics HerWellness Naturally Balanced' was deemed by the FDA to suggest the product is intended for use as a drug.2025-02-07Source
Prop 65 Lead2019-05-30Source
Fda Warning Mislabeling of 14 products as medical foods and making unapproved new drug claims.2013-08-13Source
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Frequently Asked Questions
Is Metagenics Ultra Potent-C® Vitamin C, Orange a good supplement?

Metagenics Ultra Potent-C® Vitamin C, Orange, 90 Chewable Tablets received a product quality score of 76/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 12 active ingredients with 90 servings per container. Of the 8 inactive ingredients, 6 are rated safe and 0 are flagged for review. The manufacturer, Metagenics, holds a brand trust score of 93/100 with 7 verified certifications including B Corp Certified, Consumerlab, Gluten Free Gfco, Non Gmo Project.

What are the ingredients in Metagenics Ultra Potent-C® Vitamin C, Orange?

Metagenics Ultra Potent-C® Vitamin C, Orange contains 12 active ingredients: Calories (5), Total Carbohydrate (2 g), Total Sugars (1 g), Includes 1 g Added Sugars, Vitamin C (as Ultra Potent-C®) (250 mg), Niacin (17.5 mg), and 6 more. Notable high-dose ingredients include Vitamin C at 1,667% DV, Niacin at 292% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Metagenics Ultra Potent-C® Vitamin C, Orange safe to take?

Metagenics Ultra Potent-C® Vitamin C, Orange, 90 Chewable Tablets 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 Metagenics a trustworthy supplement brand?

Metagenics receives a brand trust score of 93/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1983 and headquartered in Aliso Viejo, California, United States, the company offers 185 products in their lineup. They hold 7 verified certifications including B Corp Certified, Consumerlab, Gluten Free Gfco, Non Gmo Project. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Metagenics has 3 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.