Jamieson Laboratories Youtheory Relax Magnesium Powder, 300 mg, Berry Flavour, 126 g, 126 g supplement bottle
Jamieson Laboratories

Youtheory Relax Magnesium Powder, 300 mg, Berry Flavour, 126 g, 126 g

What We Researched
4 active ingredients analyzed · 4 inactive ingredients decoded · 1 retailer compared · Last updated: Mar 2026
87
Product Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
L-Glycine 1, 750 mg
Magnesium (citrate, carbonate) 300 mg
GABA (PharamGABA®) 100 mg
L-Theanine 100 mg
Bioavailability Very Good

Absorption Rating

  • L-Glycine Good
  • Magnesium (citrate, carbonate) Good
  • GABA (PharamGABA®) Poor
  • L-Theanine Good
Other Ingredients Excellent

Fillers & Additives

  • Xylitol
  • Citric Acid
  • Natural flavour
  • Stevia Leaf Extract
Efficacy Very Good

Dosage Analysis

  • L-Glycine 1, 750 mg Under-dosed
  • Magnesium (citrate, carbonate) 300 mg Effective
  • GABA (PharamGABA®) 100 mg Effective
  • L-Theanine 100 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
L-Glycine 1, 750 mg
Magnesium (citrate, carbonate) 300 mg
GABA (PharamGABA®) 100 mg
L-Theanine 100 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Xylitol Safe

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

Citric Acid Safe

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

Natural flavour Unknown
Stevia Leaf Extract Safe

Provides sweetness without calories or blood sugar impact.

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
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Frequently Asked Questions
Is Jamieson Laboratories Youtheory Relax Magnesium Powder, 300 mg a good supplement?

Jamieson Laboratories Youtheory Relax Magnesium Powder, 300 mg, Berry Flavour, 126 g, 126 g received a product quality score of 87/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 4 active ingredients Of the 4 inactive ingredients, 3 are rated safe and 0 are flagged for review.

What are the ingredients in Jamieson Laboratories Youtheory Relax Magnesium Powder, 300 mg?

Jamieson Laboratories Youtheory Relax Magnesium Powder, 300 mg contains 4 active ingredients: L-Glycine (1, 750 mg), Magnesium (citrate, carbonate) (300 mg), GABA (PharamGABA®) (100 mg), L-Theanine (100 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Jamieson Laboratories Youtheory Relax Magnesium Powder, 300 mg safe to take?

Jamieson Laboratories Youtheory Relax Magnesium Powder, 300 mg, Berry Flavour, 126 g, 126 g 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.