Spring Valley Spring Valley Magnesium Oxide, 500 mg, 100 Tablets supplement bottle
Spring Valley

Spring Valley Magnesium Oxide, 500 mg, 100 Tablets

What We Researched
1 active ingredient analyzed · 9 inactive ingredients decoded · 1 retailer compared · Last updated: Mar 2026
56
Product Score Poor

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Magnesium (magnesium oxide) 500 mg
Bioavailability Very Poor

Absorption Rating

  • Magnesium (magnesium oxide) Poor
Other Ingredients Good

Fillers & Additives

  • Calcium Carbonate
  • Crospovidone
  • Hypromellose
  • Magnesium Stearate
  • Microcrystalline Cellulose
  • Polyvinyl Alcohol
  • Povidone
  • Silicon Dioxide
  • Talc High
Efficacy Very Good

Dosage Analysis

  • Magnesium (magnesium oxide) 500 mg High

Supplement Facts

Ingredient Amount % Daily Value
Magnesium (magnesium oxide) 500 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Calcium Carbonate Safe

Acts as a filler and provides supplemental calcium.

Crospovidone Generally_safe

It is used as a binder to help tablets or capsules disintegrate.

Hypromellose Safe

Forms vegetarian capsule shells. Dissolves easily in the stomach.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Microcrystalline Cellulose Safe

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

Polyvinyl Alcohol Generally_safe

It is used as a coating for tablets or capsules.

Povidone Generally_safe

It is used to hold ingredients together.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

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
Spring Valley

· Bentonville, Arkansas, United States · 214 products · walmart.com/cp/spring-valley/1079329

Transparency

1 claim

Violation History

1 incident
Lawsuit Mislabeled Glucosamine Sulfate products.2017Source
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Frequently Asked Questions
Is Spring Valley Spring Valley Magnesium Oxide, 500 mg a good supplement?

Spring Valley Spring Valley Magnesium Oxide, 500 mg, 100 Tablets received a product quality score of 56/100 in GoodSupp's independent analysis, indicating several areas of concern that consumers should review. The product contains 1 active ingredients Of the 9 inactive ingredients, 5 are rated safe and 0 are flagged for review.

What are the ingredients in Spring Valley Spring Valley Magnesium Oxide, 500 mg?

Spring Valley Spring Valley Magnesium Oxide, 500 mg contains 1 active ingredients: Magnesium (magnesium oxide) (500 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Spring Valley Spring Valley Magnesium Oxide, 500 mg safe to take?

Spring Valley Spring Valley Magnesium Oxide, 500 mg, 100 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.

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.