Rugby Laboratories Calcium Tablets, 600 mg, Dietary Supplement supplement bottle
Rugby

Laboratories Calcium Tablets, 600 mg, Dietary Supplement

What We Researched
2 active ingredients analyzed · 15 inactive ingredients decoded · 1 retailer compared · Last updated: Mar 2026
62
Product Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin D 10.0 mcg 50%
Calcium 600.0 mg 46%
Bioavailability Excellent

Absorption Rating

  • Vitamin D Good
  • Calcium Good
Other Ingredients Very Poor

Fillers & Additives

  • Acacia
  • Maltodextrin
  • Microcrystalline Cellulose
  • Croscarmellose Sodium
  • Hypromellose
  • Polydextrose
  • Titanium Dioxide High
  • Sodium Lauryl Sulfate Low
  • Starch
  • Talc High
  • Triglycerides
  • Sucrose
  • Sodium Ascorbate
  • Silicon Dioxide
  • Tocopherols And Fd&c Yellow #6 Lake High
Efficacy Fair

Dosage Analysis

  • Vitamin D 10.0 mcg Under-dosed
  • Calcium 600.0 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin D 10.0 mcg 50%
Calcium 600.0 mg 46%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Acacia Generally_safe

It is used as a binder or thickener.

Maltodextrin Generally_safe

Helps carry and stabilize active ingredients. Provides bulk.

Microcrystalline Cellulose Safe

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

Croscarmellose Sodium Safe

Helps tablets break apart and dissolve quickly in the stomach.

Hypromellose Safe

Forms vegetarian capsule shells. Dissolves easily in the stomach.

Polydextrose Generally_safe

It is used as a filler, to add bulk, and as a prebiotic fiber.

Titanium Dioxide Caution

Used as a whitening agent in tablet coatings and capsules.

Sodium Lauryl Sulfate Caution

It is used to help mix oil and water-based ingredients.

Starch Generally_safe

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

Talc Avoid

It is used to improve powder flow and prevent clumping.

Triglycerides Generally_safe

They may be used as a carrier or to improve absorption of fat-soluble ingredients.

Sucrose Generally_safe

It is used as a sweetener.

Sodium Ascorbate Safe

It helps to stabilize the pH and prevent oxidation.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Tocopherols And Fd&c Yellow #6 Lake Unknown

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$11$10$9$8$7 $8.77
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 Laboratories Calcium Tablets, 600 mg a good supplement?

Rugby Laboratories Calcium Tablets, 600 mg, Dietary Supplement received a product quality score of 62/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 2 active ingredients Of the 15 inactive ingredients, 5 are rated safe and 2 are flagged for review.

What are the ingredients in Rugby Laboratories Calcium Tablets, 600 mg?

Rugby Laboratories Calcium Tablets, 600 mg contains 2 active ingredients: Vitamin D (10.0 mcg), Calcium (600.0 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Rugby Laboratories Calcium Tablets, 600 mg safe to take?

Rugby Laboratories Calcium Tablets, 600 mg, Dietary Supplement has been analyzed for ingredient safety across all its components. Of 15 inactive ingredients, 5 are rated safe. 2 ingredients are flagged for review: Titanium Dioxide, Sodium Lauryl Sulfate. '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.

What is magnesium good for?

Magnesium Good For is a topic many supplement consumers ask about. In the context of dietary supplements, understanding magnesium good for helps you make more informed choices about what you put in your body. The quality and form of ingredients matters significantly — two products listing the same ingredient can differ dramatically in bioavailability and effectiveness. GoodSupp analyzes over 250,000 supplement products to help consumers understand exactly what's in their supplements and whether the formulation meets quality standards.

How much magnesium per day?

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 is zinc good for?

Zinc Good For is a topic many supplement consumers ask about. In the context of dietary supplements, understanding zinc good for helps you make more informed choices about what you put in your body. The quality and form of ingredients matters significantly — two products listing the same ingredient can differ dramatically in bioavailability and effectiveness. GoodSupp analyzes over 250,000 supplement products to help consumers understand exactly what's in their supplements and whether the formulation meets quality standards.

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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.