Slow-Mag Magnesium and Calcium supplement bottle
Slow-Mag

Magnesium and Calcium

What We Researched
3 active ingredients analyzed · 20 inactive ingredients decoded · 1 retailer compared · Last updated: Mar 2026
50
Product Score Poor

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Calcium 238 mg 18%
Magnesium 143 mg 34%
Chloride 416 mg 18%
Bioavailability Excellent

Absorption Rating

  • Calcium Good
  • Magnesium Good
  • Chloride Good
Other Ingredients Very Poor

Fillers & Additives

  • Magnesium Chloride Hexahydrate
  • Calcium Carbonate
  • Methacrylic Acid Copolymer
  • Polyvinylpyrrolidone
  • Triacetin
  • Microcrystalline Cellulose
  • Hypromellose
  • Titanium Dioxide High
  • Acacia
  • Maltodextrin
  • Magnesium Stearate
  • Stearic Acid
  • Mineral Oil Medium
  • Carnauba Wax
  • Croscarmellose Sodium
  • Sodium Lauryl Sulfate Low
  • FD&C Blue #2 Lake High
  • Pharmaceutical Glaze
  • Propylene Glycol
  • Talc High
Efficacy Very Poor

Dosage Analysis

  • Calcium 238 mg Under-dosed
  • Magnesium 143 mg Under-dosed
  • Chloride 416 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Calcium 238 mg 18%
Magnesium 143 mg 34%
Chloride 416 mg 18%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Magnesium Chloride Hexahydrate Unknown
Calcium Carbonate Safe

Acts as a filler and provides supplemental calcium.

Methacrylic Acid Copolymer Generally_safe

It is added to provide a protective coating or to control the release of ingredients.

Polyvinylpyrrolidone Generally_safe

It is used to bind ingredients together.

Triacetin Generally_safe

It is used as a solvent or humectant.

Microcrystalline Cellulose Safe

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

Hypromellose Safe

Forms vegetarian capsule shells. Dissolves easily in the stomach.

Titanium Dioxide Caution

Used as a whitening agent in tablet coatings and capsules.

Acacia Generally_safe

It is used as a binder or thickener.

Maltodextrin Generally_safe

Helps carry and stabilize active ingredients. Provides bulk.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Mineral Oil Caution

It is used as a lubricant or emollient.

Carnauba Wax Safe

Provides a glossy, protective coating on tablets.

Croscarmellose Sodium Safe

Helps tablets break apart and dissolve quickly in the stomach.

Sodium Lauryl Sulfate Caution

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

FD&C Blue #2 Lake Unknown
Pharmaceutical Glaze Generally_safe

It is used to coat tablets or capsules for easier swallowing or controlled release.

Propylene Glycol Generally_safe

It is used as a solvent to dissolve ingredients.

Talc Avoid

It is used to improve powder flow and prevent clumping.

Price Comparison

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

Brand Trust Report
Related Supplements
Frequently Asked Questions
Is Slow-Mag Magnesium and Calcium a good supplement?

Slow-Mag Magnesium and Calcium received a product quality score of 50/100 in GoodSupp's independent analysis, indicating several areas of concern that consumers should review. The product contains 3 active ingredients with 30 servings per container. Of the 20 inactive ingredients, 7 are rated safe and 3 are flagged for review.

What are the ingredients in Slow-Mag Magnesium and Calcium?

Slow-Mag Magnesium and Calcium contains 3 active ingredients: Calcium (238 mg), Magnesium (143 mg), Chloride (416 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Slow-Mag Magnesium and Calcium safe to take?

Slow-Mag Magnesium and Calcium has been analyzed for ingredient safety across all its components. Of 20 inactive ingredients, 7 are rated safe. 3 ingredients are flagged for review: Titanium Dioxide, Mineral Oil, 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.

Scan Any Supplement Instantly

Download GoodSupp to scan barcodes, check ingredient safety, and find the best supplements for your needs.

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.