GNC Magnesium Powder - Lemon Twist (60 Servings) supplement bottle
GNC

Magnesium Powder - Lemon Twist (60 Servings)

What We Researched
2 active ingredients analyzed · 4 inactive ingredients decoded · 5 brand certifications checked · 1 retailer compared · Last updated: Mar 2026
75
Product Score Fair
88
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Magnesium (as Magnesium Citrate & Magnesium Carbonate) 325 mg 77%
Bioavailability Very Poor

Absorption Rating

  • Magnesium (as Magnesium Citrate & Magnesium Carbonate) Poor
Other Ingredients Excellent

Fillers & Additives

  • Natural Flavors
  • Citric Acid
  • Malic Acid
  • Rebaudioside A (Organic Stevia Leaf Extract)
Efficacy Excellent

Dosage Analysis

  • Magnesium (as Magnesium Citrate & Magnesium Carbonate) 325 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Includes 0 g Added Sugars 0 g 0%
Magnesium (as Magnesium Citrate & Magnesium Carbonate) 325 mg 77%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Natural Flavors Safe

Improves taste of chewable, gummy, or liquid supplements.

Citric Acid Safe

Adds tartness and acts as a natural preservative. Also aids in ingredient stability.

Malic Acid Safe

Adds tartness and enhances fruit flavors in gummies and chewables.

Rebaudioside A (Organic Stevia Leaf Extract) Safe

It is added to provide a sweet taste.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$25$24$23$22$21 Mar 12 $22.99
GNC

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

Brand Trust Report
GNC

Founded 1935 · Pittsburgh, Pennsylvania, USA · 200 products · gnc.com

Certifications

5 certifications
Informed Sport Verified Source
Consumerlab Verified Source
Fda Gmp Inspections Verified Source
Usda Organic Verified Source
Vegan Certified Verified Source

Transparency

3 claims
Third Party Testing Claim — Verified Source
Testing Lab Disclosure — Verified Source
In House Testing — Claimed
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Frequently Asked Questions
Is GNC Magnesium Powder - Lemon Twist (60 Servings) a good supplement?

GNC Magnesium Powder - Lemon Twist (60 Servings) received a product quality score of 75/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 2 active ingredients with 60 servings per container. All 4 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, GNC, holds a brand trust score of 88/100 with 5 verified certifications including Informed Sport, Consumerlab, Fda Gmp Inspections, Usda Organic.

What are the ingredients in GNC Magnesium Powder - Lemon Twist (60 Servings)?

GNC Magnesium Powder - Lemon Twist (60 Servings) contains 2 active ingredients: Includes 0 g Added Sugars (0 g), Magnesium (as Magnesium Citrate & Magnesium Carbonate) (325 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is GNC Magnesium Powder - Lemon Twist (60 Servings) safe to take?

GNC Magnesium Powder - Lemon Twist (60 Servings) has been analyzed for ingredient safety across all its components. All 4 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 GNC a trustworthy supplement brand?

GNC receives a brand trust score of 88/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1935 and headquartered in Pittsburgh, Pennsylvania, USA, the company offers 200 products in their lineup. They hold 5 verified certifications including Informed Sport, Consumerlab, Fda Gmp Inspections, Usda Organic. 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 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.