KAL Cal/Mag/Zinc, High Potency, 250 Tablets supplement bottle
KAL

Cal/Mag/Zinc, High Potency, 250 Tablets

What We Researched
6 active ingredients analyzed · 2 inactive ingredients decoded · 3 brand certifications checked · 4 retailers compared · Last updated: Mar 2026
85
Product Score Good
73
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Calcium (from Calcium Carbonate) 1,000 mg 77%
Magnesium (from Magnesium Oxide) 400 mg 95%
Zinc (from Zinc Gluconate) 15 mg 136%
Bioavailability Fair

Absorption Rating

  • Calcium (from Calcium Carbonate) Fair
  • Magnesium (from Magnesium Oxide) Poor
  • Zinc (from Zinc Gluconate) Good
Other Ingredients Excellent

Fillers & Additives

  • Cellulose
  • Stearic Acid and Magnesium Stearate
Efficacy Excellent

Dosage Analysis

  • Calcium (from Calcium Carbonate) 1,000 mg Effective
  • Magnesium (from Magnesium Oxide) 400 mg High
  • Zinc (from Zinc Gluconate) 15 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Total Carbohydrate <1 g <1%†
Dietary Fiber 1 g 4%†
Calcium (from Calcium Carbonate) 1,000 mg 77%
Magnesium (from Magnesium Oxide) 400 mg 95%
Zinc (from Zinc Gluconate) 15 mg 136%
Sodium 15 mg <1%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Cellulose Safe

Provides bulk and structure in tablets and capsules.

Stearic Acid and Magnesium Stearate Generally_safe

They are used to improve the flow and processing of the supplement.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$22$21$20$19$18 Mar 12 $19.69$19.69
iHerb
Vitacost

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

Brand Trust Report
KAL

Founded 1932 · Salt Lake City, Utah, United States · 289 products · kalvitamins.com

Certifications

3 certifications
Nsf Gmp Verified Source
Fda Gmp Inspections Verified Source
Usda Organic Verified Source

Transparency

2 claims
Third Party Testing Claim — Claimed Source
In House Testing — Verified Source

Violation History

1 incident
Lawsuit A consumer class action was filed alleging that the marketing of a dietary supplement violated California's consumer-protection laws.2013Source
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Frequently Asked Questions
Is KAL Cal/Mag/Zinc, High Potency a good supplement?

KAL Cal/Mag/Zinc, High Potency, 250 Tablets received a product quality score of 85/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 6 active ingredients with 83 servings per container. Of the 2 inactive ingredients, 1 are rated safe and 0 are flagged for review. The manufacturer, KAL, holds a brand trust score of 73/100 with 3 verified certifications including Nsf Gmp, Fda Gmp Inspections, Usda Organic.

What are the ingredients in KAL Cal/Mag/Zinc, High Potency?

KAL Cal/Mag/Zinc, High Potency contains 6 active ingredients: Total Carbohydrate (<1 g), Dietary Fiber (1 g), Calcium (from Calcium Carbonate) (1,000 mg), Magnesium (from Magnesium Oxide) (400 mg), Zinc (from Zinc Gluconate) (15 mg), Sodium (15 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is KAL Cal/Mag/Zinc, High Potency safe to take?

KAL Cal/Mag/Zinc, High Potency, 250 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 KAL a trustworthy supplement brand?

KAL receives a brand trust score of 73/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1932 and headquartered in Salt Lake City, Utah, United States, the company offers 289 products in their lineup. They hold 3 verified certifications including Nsf Gmp, Fda Gmp Inspections, Usda Organic. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: KAL has 1 historical regulatory incident on record, which are factored into the trust score.

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.