365 by Whole Foods Market Magnesium Bisglycinate 300 mg supplement bottle
365 by Whole Foods Market

Magnesium Bisglycinate 300 mg Review

What We Researched
2 active ingredients analyzed · 9 inactive ingredients decoded · 6 brand certifications checked · Page generated: Sep 2026
100
Product Score Excellent
100
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 —
Magnesium Bisglycinate 300 mg —
Bioavailability Excellent

Absorption Rating

  • Magnesium Good
  • Magnesium Bisglycinate Good
Other Ingredients Excellent

Fillers & Additives

  • Microcrystalline Cellulose
  • Magnesium Stearate
  • Croscarmellose Sodium
  • Hypromellose
  • Medium Chain Triglycerides
  • Hydroxypropyl Cellulose
  • Isomalt
  • Silicon Dioxide
  • Rice Starch
Efficacy Excellent

Dosage Analysis

  • Magnesium 300 mg Effective
  • Magnesium Bisglycinate 300 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Magnesium 300 mg
Magnesium Bisglycinate 300 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Microcrystalline Cellulose Safe

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

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Croscarmellose Sodium Safe

Helps tablets break apart and dissolve quickly in the stomach.

Hypromellose Safe

Forms vegetarian capsule shells. Dissolves easily in the stomach.

Medium Chain Triglycerides Safe

Enhances absorption of fat-soluble vitamins.

Hydroxypropyl Cellulose Safe

Binds tablet ingredients and can form tablet coatings.

Isomalt Generally_safe

It provides sweetness with fewer calories than sugar.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Rice Starch Generally_safe

It is used as a filler or binder in supplements.

Brand Trust Report
365 by Whole Foods Market

Founded 1980 · Austin, Texas, United States · wholefoodsmarket.com/365-by-whole-foods-market

Certifications

6 certifications
Usda Organic Source available Primary evidence
NSF Certified for Sport Supporting evidence unavailable
NSF Contents Certified Supporting evidence unavailable
IGEN Non-GMO Tested Supporting evidence unavailable
Non-GMO Project Verified Supporting evidence unavailable
Gluten-Free Certified Supporting evidence unavailable

Transparency

4 claims
Third Party Testing Claim — Verified Evidence available Evidence
Coa Availability — Verified Evidence available Evidence
Contains Proprietary Blend — True Brand claim; evidence unavailable

Violation History

10 incidents
Prop 65 Cadmium2026-01-09 Source available Primary source
Prop 65 Lead and Cadmium2026-01-09 Source available Primary source
Recall 365 Whole Foods Market Small Bites Macaroni & Cheese2025-03-14 Source available Primary source
Lawsuit Misleading packaging of '365 Organic Hot Cocoa' with non-functional empty space ('slack-fill').2025 Source available Primary source
Lawsuit Failure to disclose that '365 By Whole Foods Market' herbs and spices contain high levels of toxic heavy metals (arsenic, lead, and cadmium).2022 Source available Primary source
Prop 65 Acrylamide2021-06-21 Source available Primary source
Fda Warning A pattern of receiving and offering for sale misbranded food products with undeclared allergens.2020-12-22 Source available Primary source
Fda Warning Serious violations of FDA's Current Good Manufacturing Practice (cGMP) regulations, including the presence of Listeria.2016-06-08 Source available Primary source
Lawsuit The '365 Everyday Value Plain Greek Yogurt' contained nearly six times the amount of sugar listed on the label.2014 Source available Primary source
Prop 65 1,4-dioxane2008-06-12 Source available Primary source
Related Supplements
Frequently Asked Questions
Is 365 by Whole Foods Market Magnesium Bisglycinate 300 mg a good supplement?

365 by Whole Foods Market Magnesium Bisglycinate 300 mg 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 2 active ingredients with 30 servings per container. All 9 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, 365 by Whole Foods Market, holds a brand trust score of 100/100.

What are the ingredients in 365 by Whole Foods Market Magnesium Bisglycinate 300 mg?

365 by Whole Foods Market Magnesium Bisglycinate 300 mg contains 2 active ingredients: Magnesium (300 mg), Magnesium Bisglycinate (300 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is 365 by Whole Foods Market Magnesium Bisglycinate 300 mg safe to take?

GoodSupp reviewed the inactive-ingredient data available for 365 by Whole Foods Market Magnesium Bisglycinate 300 mg. All 9 inactive ingredients — including capsule materials, fillers, and binders — are currently classified as safe in GoodSupp's ingredient reference data. This label analysis cannot determine whether the product is safe for a particular person, and source labels may change. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is 365 by Whole Foods Market a trustworthy supplement brand?

365 by Whole Foods Market receives a brand trust score of 100/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1980 and headquartered in Austin, Texas, United States, Note: 365 by Whole Foods Market has 10 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.