Doctors' Preferred Advanced Magnesium Glycinate Complex supplement bottle
Doctors' Preferred

Advanced Magnesium Glycinate Complex Review

What We Researched
1 active ingredient analyzed · 8 inactive ingredients decoded · 1 brand certification checked · Last updated: Aug 2026
93
Product Score Excellent
78
Brand Score Fair

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 420 mg 100%
Bioavailability Excellent

Absorption Rating

  • Magnesium Good
Other Ingredients Excellent

Fillers & Additives

  • Stearic Acid
  • Microcrystalline Cellulose
  • Dicalcium Phosphate
  • Hypromellose
  • Magnesium Stearate
  • Croscarmellose Sodium
  • Glycerin
  • Hydroxypropyl Cellulose
Efficacy Very Good

Dosage Analysis

  • Magnesium 420 mg High

Supplement Facts

Ingredient Amount % Daily Value
Magnesium 420 mg 100%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Microcrystalline Cellulose Safe

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

Dicalcium Phosphate Safe

Serves as both a filler and a supplemental source of calcium and phosphorus.

Hypromellose Safe

Forms vegetarian capsule shells. Dissolves easily in the stomach.

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.

Glycerin Safe

Retains moisture and helps dissolve ingredients in softgels and liquids.

Hydroxypropyl Cellulose Safe

Binds tablet ingredients and can form tablet coatings.

Brand Trust Report
Doctors' Preferred

Founded 2004 · Bethesda, MD, United States · 24 products · healthydirections.com/brand/doctors-preferred

Certifications

1 certification
Nsf Gmp Verified Source

Transparency

2 claims
Third Party Testing Claim — Verified Source
In House Testing — Verified Source
Related Supplements
Frequently Asked Questions
Is Doctors' Preferred Advanced Magnesium Glycinate Complex a good supplement?

Doctors' Preferred Advanced Magnesium Glycinate Complex received a product quality score of 93/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 1 active ingredients with 30 servings per container. All 8 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Doctors' Preferred, holds a brand trust score of 78/100 with 1 verified certifications including Nsf Gmp.

What are the ingredients in Doctors' Preferred Advanced Magnesium Glycinate Complex?

Doctors' Preferred Advanced Magnesium Glycinate Complex contains 1 active ingredients: Magnesium (420 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Doctors' Preferred Advanced Magnesium Glycinate Complex safe to take?

Doctors' Preferred Advanced Magnesium Glycinate Complex has been analyzed for ingredient safety across all its components. All 8 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 Doctors' Preferred a trustworthy supplement brand?

Doctors' Preferred receives a brand trust score of 78/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2004 and headquartered in Bethesda, MD, United States, the company offers 24 products in their lineup. They hold 1 verified certifications including Nsf Gmp. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. No regulatory violations or FDA warning letters were found in our research.

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.