Rugby Vitamin C-500 mg High-Potency Immune Support & Antioxidant Protection in Value supplement bottle
Rugby

Vitamin C-500 mg High-Potency Immune Support & Antioxidant Protection in Value

What We Researched
1 active ingredient analyzed · 17 inactive ingredients decoded · 1 retailer compared · Last updated: Mar 2026
62
Product Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin C (as Ascorbic Acid) 500.0 mg 556%
Bioavailability Fair

Absorption Rating

  • Vitamin C (as Ascorbic Acid) Fair
Other Ingredients Very Poor

Fillers & Additives

  • Croscarmellose Sodium
  • Cellulose
  • Stearic Acid
  • Hypromellose
  • Magnesium Silicate
  • Titanium Dioxide High
  • Mineral Oil Medium
  • Triacetin
  • Polyethylene Glycol Low
  • Microcrystalline Cellulose
  • Corn Starch
  • Polyvinylpyrrolidone. No Added Sugar
  • Salt
  • Yeast
  • Preservatives
  • Artificial Flavor
  • Artificial Color High
Efficacy Excellent

Dosage Analysis

  • Vitamin C (as Ascorbic Acid) 500.0 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin C (as Ascorbic Acid) 500.0 mg 556%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Croscarmellose Sodium Safe

Helps tablets break apart and dissolve quickly in the stomach.

Cellulose Safe

Provides bulk and structure in tablets and capsules.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Hypromellose Safe

Forms vegetarian capsule shells. Dissolves easily in the stomach.

Magnesium Silicate Generally_safe

It is used to improve powder flow and prevent clumping.

Titanium Dioxide Caution

Used as a whitening agent in tablet coatings and capsules.

Mineral Oil Caution

It is used as a lubricant or emollient.

Triacetin Generally_safe

It is used as a solvent or humectant.

Polyethylene Glycol Caution

It is used as a binder, coating agent, or to improve solubility.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Corn Starch Generally_safe

It is used as a filler, binder, or thickener.

Polyvinylpyrrolidone. No Added Sugar Unknown
Salt Safe

It is used as a flavoring agent.

Yeast Unknown
Preservatives Unknown
Artificial Flavor Generally_safe

It is used to enhance the taste of supplements.

Artificial Color Unknown

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$51$50$49$48$47 $49.05
Target

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

Brand Trust Report
Rugby

Founded 1961 · Livonia, Michigan, USA · 135 products · majorrugby.com/

Transparency

1 claim

Violation History

4 incidents
Recall All liquid products manufactured by PharmaTech LLC and distributed by Rugby Laboratories2017-08-10Source
Recall Rugby Natural Iron Supplement tablets2013-01-17Source
Recall Rugby Children's Pain & Fever Concentrated Drops (Acetaminophen Drops)2011-07-21Source
Lawsuit Failure to have an effective system to identify and report suspicious orders of controlled substances.2011Source
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Frequently Asked Questions
Is Rugby Vitamin C-500 mg High-Potency Immune Support & Antioxidant Protection in Value a good supplement?

Rugby Vitamin C-500 mg High-Potency Immune Support & Antioxidant Protection in Value received a product quality score of 62/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 1 active ingredients with 1000 servings per container. Of the 17 inactive ingredients, 6 are rated safe and 3 are flagged for review.

What are the ingredients in Rugby Vitamin C-500 mg High-Potency Immune Support & Antioxidant Protection in Value?

Rugby Vitamin C-500 mg High-Potency Immune Support & Antioxidant Protection in Value contains 1 active ingredients: Vitamin C (as Ascorbic Acid) (500.0 mg). 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 Rugby Vitamin C-500 mg High-Potency Immune Support & Antioxidant Protection in Value safe to take?

Rugby Vitamin C-500 mg High-Potency Immune Support & Antioxidant Protection in Value has been analyzed for ingredient safety across all its components. Of 17 inactive ingredients, 6 are rated safe. 3 ingredients are flagged for review: Titanium Dioxide, Mineral Oil, Polyethylene Glycol. 'Caution' doesn't mean dangerous — it indicates the ingredient has some considerations worth being aware of, such as potential sensitivities or ongoing research. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

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.