Swanson Liquid Calcium & Magnesium supplement bottle
Swanson

Liquid Calcium & Magnesium Review

What We Researched
5 active ingredients analyzed · 7 inactive ingredients decoded · 6 brand certifications checked · Last updated: Aug 2026
100
Product Score Excellent
97
Brand Score Excellent

Two independent scores — the product and the brand behind it, never blended into one number. See our methodology.

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Magnesium 300 mg
Calcium 600 mg
Bioavailability Excellent

Absorption Rating

  • Magnesium Good
  • Calcium Good
Other Ingredients Excellent

Fillers & Additives

  • Gelatin
  • Soybean Oil
  • Yellow Beeswax
  • Glycerin
  • Annatto
  • Purified Water
  • Soy Lecithin
Efficacy Excellent

Dosage Analysis

  • Magnesium 300 mg Effective
  • Calcium 600 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Magnesium 300 mg
Total Fat 1 g
Calcium 600 mg
Calories from Fat 15 calorie(s)
Calories 20 calorie(s)

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Gelatin Safe

Forms the capsule shell that holds the supplement contents.

Soybean Oil Safe

Dissolves fat-soluble ingredients. Contains soy allergen.

Yellow Beeswax Safe

Helps form and seal softgel capsules.

Glycerin Safe

Retains moisture and helps dissolve ingredients in softgels and liquids.

Annatto Safe

Provides natural color to supplements.

Purified Water Safe

Dissolves and carries water-soluble ingredients.

Soy Lecithin Safe

Helps blend oil and water-based ingredients. Common allergen.

Brand Trust Report
Swanson

Founded 1969 · Fargo, North Dakota, United States · 1329 products · swansonvitamins.com

Certifications

6 certifications
Nsf Gmp Verified Source
Fda Gmp Inspections Verified Source
Npa Gmp Verified Source
Usda Organic Verified Source
Vegan Certified Verified Source
NSF Certified Verified

Transparency

5 claims
Third Party Testing Claim — Verified Source
Coa Availability — Claimed Source
In House Testing — Verified Source
Testing Lab Disclosure — True
Contains Proprietary Blend — True

Violation History

5 incidents
Recall Vitamin B12 Methylcobalamin High Absorption2022-03-04Source
Prop 65 Lead2015-11-03Source
Recall Swanson Premium Brand Full Spectrum Cilantro (Coriander)2014-04-04Source
Recall Swanson Organic Celery Seed (Whole)2011-12-16Source
Fda Warning Products contained an unauthorized drug (lovastatin) and were marketed with claims to treat high cholesterol, rendering them unapproved new drugs.2007-08-08Source
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Frequently Asked Questions
Is Swanson Liquid Calcium & Magnesium a good supplement?

Swanson Liquid Calcium & Magnesium received a product quality score of 100/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 5 active ingredients with 50 servings per container. All 7 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Swanson, holds a brand trust score of 97/100 with 6 verified certifications including Nsf Gmp, Fda Gmp Inspections, Npa Gmp, Usda Organic.

What are the ingredients in Swanson Liquid Calcium & Magnesium?

Swanson Liquid Calcium & Magnesium contains 5 active ingredients: Magnesium (300 mg), Total Fat (1 g), Calcium (600 mg), Calories from Fat (15 calorie(s)), Calories (20 calorie(s)). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Swanson Liquid Calcium & Magnesium safe to take?

Swanson Liquid Calcium & Magnesium has been analyzed for ingredient safety across all its components. All 7 inactive ingredients — including capsule materials, fillers, and binders — are rated safe based on regulatory data and published safety research. This is a clean formulation with no controversial additives. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Swanson a trustworthy supplement brand?

Swanson receives a brand trust score of 97/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1969 and headquartered in Fargo, North Dakota, United States, the company offers 1329 products in their lineup. They hold 6 verified certifications including Nsf Gmp, Fda Gmp Inspections, Npa Gmp, Usda Organic. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Swanson has 5 historical regulatory incidents 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 150,000 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 150,000 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 — read our methodology. 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.