Jamieson Jamieson Magnesium Bisglycinate Plus Citrate Powder, 300 mg, Lemon-Lime Flavour, 228 g, 228 g supplement bottle
Jamieson

Jamieson Magnesium Bisglycinate Plus Citrate Powder, 300 mg, Lemon-Lime Flavour, 228 g, 228 g Review

What We Researched
1 active ingredient analyzed · 6 inactive ingredients decoded · 5 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
Elemental Magnesium (Bisglycinate, Citrate*) 300 mg —
Bioavailability Excellent

Absorption Rating

  • Elemental Magnesium (Bisglycinate, Citrate*) Good
Other Ingredients Excellent

Fillers & Additives

  • Citric Acid
  • Tartaric Acid
  • Natural flavours (lemon, lime)
  • Xylitol
  • Stevia
  • Thaumatin
Efficacy Excellent

Dosage Analysis

  • Elemental Magnesium (Bisglycinate, Citrate*) 300 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Elemental Magnesium (Bisglycinate, Citrate*) 300 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Citric Acid Safe

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

Tartaric Acid Safe

Provides sour taste in chewable supplements.

Natural flavours (lemon, lime) Unknown
Xylitol Safe

Provides sweetness with reduced calorie content. Does not promote tooth decay.

Stevia Safe

It is used as a sweetener.

Thaumatin Unknown
Brand Trust Report
Jamieson

Founded 1922 · Toronto, Ontario, Canada · 384 products · jamiesonvitamins.com

Certifications

5 certifications
Consumerlab Source available Primary evidence
Health Canada Licensed Source available Primary evidence
Nsf Gmp Source available Primary evidence
Fda Gmp Inspections Source available Primary evidence
Informed Sport Source available Primary evidence

Transparency

4 claims
Third Party Testing Claim — Verified Evidence available Evidence
In House Testing — Verified Evidence available Evidence
Testing Lab Disclosure — Claimed Evidence available Evidence

Violation History

8 incidents
Prop 65 Lead2019-02-14 Source available Primary source
Prop 65 Lead2019-02-14 Source available Primary source
Lawsuit Products labeled as containing glucosamine sulfate did not actually contain any.2019 Source available Primary source
Lawsuit Manufacturing and selling products labeled as containing glucosamine sulfate which allegedly did not contain any glucosamine sulfate.2019 Source available Primary source
Recall Jamieson Vitamin B2 100 mg (NPN 00309702, Lots 1278153, 1387669, 1390088)2009-03-02 Source available Primary source
Recall Vitamin B22009-03-02 Source available Primary source
Recall Jamieson's MegaCal 650 mg with Vitamin D, 100 count (Lot 302273)2002-02-11 Source available Primary source
Recall MegaCal 650 mg with Vitamin D2002-02-11 Source available Primary source
Related Supplements
Frequently Asked Questions
Is Jamieson Jamieson Magnesium Bisglycinate Plus Citrate Powder, 300 mg a good supplement?

Jamieson Jamieson Magnesium Bisglycinate Plus Citrate Powder, 300 mg, Lemon-Lime Flavour, 228 g, 228 g 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 1 active ingredients Of the 6 inactive ingredients, 4 are rated safe and 0 ingredients are flagged for review. The manufacturer, Jamieson, holds a brand trust score of 100/100.

What are the ingredients in Jamieson Jamieson Magnesium Bisglycinate Plus Citrate Powder, 300 mg?

Jamieson Jamieson Magnesium Bisglycinate Plus Citrate Powder, 300 mg contains 1 active ingredients: Elemental Magnesium (Bisglycinate, Citrate*) (300 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Jamieson Jamieson Magnesium Bisglycinate Plus Citrate Powder, 300 mg safe to take?

GoodSupp reviewed the inactive-ingredient data available for Jamieson Jamieson Magnesium Bisglycinate Plus Citrate Powder, 300 mg, Lemon-Lime Flavour, 228 g, 228 g. 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 Jamieson a trustworthy supplement brand?

Jamieson receives a brand trust score of 100/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1922 and headquartered in Toronto, Ontario, Canada, the company offers 384 products in their lineup. Note: Jamieson has 8 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.

Scan Any Supplement Instantly

Download GoodSupp to scan barcodes, check ingredient safety, and find the best supplements for your needs.

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.