Youtheory Sleep Powder, Lemon Lime, 6 oz (172 g) supplement bottle
Youtheory

Sleep Powder, Lemon Lime, 6 oz (172 g)

What We Researched
7 active ingredients analyzed · 3 inactive ingredients decoded · 3 brand certifications checked · 3 retailers compared · Last updated: Mar 2026
85
Product Score Good
74
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Magnesium (as Magnesium Citrate) 200 mg 48%
L-Glycine 3,000 mg **
L-Tryptophan 250 mg **
L-Theanine 200 mg **
5-HTP (5-hydroxytryptophan) 100 mg **
Melatonin 0.3 mg **
Bioavailability Excellent

Absorption Rating

  • Magnesium (as Magnesium Citrate) Good
  • L-Glycine Good
  • L-Tryptophan Good
  • L-Theanine Good
  • 5-HTP (5-hydroxytryptophan) Good
  • Melatonin Fair
Other Ingredients Excellent

Fillers & Additives

  • Natural lemon-lime flavor
  • Silicon Dioxide
  • Xanthan Gum
Efficacy Fair

Dosage Analysis

  • Magnesium (as Magnesium Citrate) 200 mg Effective
  • L-Glycine 3,000 mg Effective
  • L-Tryptophan 250 mg Under-dosed
  • L-Theanine 200 mg Effective
  • 5-HTP (5-hydroxytryptophan) 100 mg Under-dosed
  • Melatonin 0.3 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Calories 15
Magnesium (as Magnesium Citrate) 200 mg 48%
L-Glycine 3,000 mg **
L-Tryptophan 250 mg **
L-Theanine 200 mg **
5-HTP (5-hydroxytryptophan) 100 mg **
Melatonin 0.3 mg **

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Natural lemon-lime flavor Unknown
Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Xanthan Gum Safe

Thickens and stabilizes liquid and semi-solid supplements.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$20$19$18$17$16 Mar 12 $18.00$17.66
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 Sleep Powder, Lemon Lime a good supplement?

Youtheory Sleep Powder, Lemon Lime, 6 oz (172 g) received a product quality score of 85/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 7 active ingredients with 28 servings per container. Of the 3 inactive ingredients, 2 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 Sleep Powder, Lemon Lime?

Youtheory Sleep Powder, Lemon Lime contains 7 active ingredients: Calories (15), Magnesium (as Magnesium Citrate) (200 mg), L-Glycine (3,000 mg), L-Tryptophan (250 mg), L-Theanine (200 mg), 5-HTP (5-hydroxytryptophan) (100 mg), and 1 more. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Youtheory Sleep Powder, Lemon Lime safe to take?

Youtheory Sleep Powder, Lemon Lime, 6 oz (172 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.

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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.