Youtheory Relax, Magnesium Powder, Berry, 4.4 oz (126 g) supplement bottle
Youtheory

Relax, Magnesium Powder, Berry, 4.4 oz (126 g)

What We Researched
3 active ingredients analyzed · 4 inactive ingredients decoded · 3 brand certifications checked · 4 retailers compared · Last updated: Mar 2026
91
Product Score Excellent
74
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Magnesium (as Magnesium Citrate reacted from Magnesium Carbonate and Citric Acid) 300 mg 70%
GABA (as PharmaGABA®) 100 mg **
L-Theanine 100 mg **
Bioavailability Good

Absorption Rating

  • Magnesium (as Magnesium Citrate reacted from Magnesium Carbonate and Citric Acid) Poor
  • GABA (as PharmaGABA®) Good
  • L-Theanine Good
Other Ingredients Excellent

Fillers & Additives

  • L-glycine
  • Xylitol
  • Natural Raspberry Flavor
  • Stevia (Leaf) Extract
Efficacy Excellent

Dosage Analysis

  • Magnesium (as Magnesium Citrate reacted from Magnesium Carbonate and Citric Acid) 300 mg Effective
  • GABA (as PharmaGABA®) 100 mg Effective
  • L-Theanine 100 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Magnesium (as Magnesium Citrate reacted from Magnesium Carbonate and Citric Acid) 300 mg 70%
GABA (as PharmaGABA®) 100 mg **
L-Theanine 100 mg **

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

L-glycine Unknown
Xylitol Safe

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

Natural Raspberry Flavor Generally_safe

It is used to enhance the taste of the supplement.

Stevia (Leaf) Extract Generally_safe

It is used as a natural, low-calorie sweetener in supplements.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$21$20$19$18$17 Mar 12 $19.19$19.17
iHerb
Vitacost

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

Brand Trust Report
Youtheory

Founded 2010 · Irvine, California, United States · 45 products · youtheory.com/

Certifications

3 certifications
Consumerlab Verified Source
Usp Verified Verified Source
Nsf Gmp Verified Source

Transparency

3 claims
Third Party Testing Claim — Claimed Source
In House Testing — Verified Source

Violation History

2 incidents
Prop 65 Lead2017-02-24Source
Lawsuit Investigation into potentially fraudulent anti-aging claims for Youtheory Collagen Tablets.2014
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Frequently Asked Questions
Is Youtheory Relax, Magnesium Powder a good supplement?

Youtheory Relax, Magnesium Powder, Berry, 4.4 oz (126 g) received a product quality score of 91/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 3 active ingredients Of the 4 inactive ingredients, 1 are rated safe and 0 are flagged for review. The manufacturer, Youtheory, holds a brand trust score of 74/100 with 3 verified certifications including Consumerlab, Usp Verified, Nsf Gmp.

What are the ingredients in Youtheory Relax, Magnesium Powder?

Youtheory Relax, Magnesium Powder contains 3 active ingredients: Magnesium (as Magnesium Citrate reacted from Magnesium Carbonate and Citric Acid) (300 mg), GABA (as PharmaGABA®) (100 mg), L-Theanine (100 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Youtheory Relax, Magnesium Powder safe to take?

Youtheory Relax, Magnesium Powder, Berry, 4.4 oz (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.

Is Youtheory a trustworthy supplement brand?

Youtheory receives a brand trust score of 74/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2010 and headquartered in Irvine, California, United States, the company offers 45 products in their lineup. They hold 3 verified certifications including Consumerlab, Usp Verified, Nsf Gmp. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Youtheory has 2 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 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.