Source Naturals Serene Science®, Theanine Serene® With Relora®, 120 Tablets supplement bottle
Source Naturals

Serene Science®, Theanine Serene® With Relora®, 120 Tablets

What We Researched
9 active ingredients analyzed · 6 inactive ingredients decoded · 1 brand certification checked · 2 retailers compared · Last updated: Mar 2026
80
Product Score Good
66
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Magnesium (as magnesium amino acid complex) 300 mg 71%
GABA (gamma-aminobutyric acid) 500 mg
Taurine 450 mg
L-Theanine 200 mg
Relora® (a proprietary blend of a patented extract from Magnolia officinalis bark and a proprietary extract from Phellodendron amurense bark) 150 mg
Holy Basil Leaf Extract 100 mg
Bioavailability Very Good

Absorption Rating

  • Magnesium (as magnesium amino acid complex) Good
  • GABA (gamma-aminobutyric acid) Poor
  • Taurine Good
  • L-Theanine Good
  • Relora® (a proprietary blend of a patented extract from Magnolia officinalis bark and a proprietary extract from Phellodendron amurense bark) Good
  • Holy Basil Leaf Extract Fair
Other Ingredients Excellent

Fillers & Additives

  • Sorbitol
  • Stearic Acid
  • Modified Cellulose Gum
  • Hydroxypropyl Cellulose
  • Magnesium Stearate
  • Silica
Efficacy Fair

Dosage Analysis

  • Magnesium (as magnesium amino acid complex) 300 mg Effective
  • GABA (gamma-aminobutyric acid) 500 mg High
  • Taurine 450 mg Under-dosed
  • L-Theanine 200 mg Effective
  • Relora® (a proprietary blend of a patented extract from Magnolia officinalis bark and a proprietary extract from Phellodendron amurense bark) 150 mg Under-dosed
  • Holy Basil Leaf Extract 100 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Calories 15
Total Carbohydrate 1 g <1%*
Magnesium (as magnesium amino acid complex) 300 mg 71%
Sodium 5 mg <1%
GABA (gamma-aminobutyric acid) 500 mg
Taurine 450 mg
L-Theanine 200 mg
Relora® (a proprietary blend of a patented extract from Magnolia officinalis bark and a proprietary extract from Phellodendron amurense bark) 150 mg
Holy Basil Leaf Extract 100 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Sorbitol Safe

Provides sweetness and helps retain moisture in chewables.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Modified Cellulose Gum Generally_safe

It is used to improve the texture and stability of products.

Hydroxypropyl Cellulose Safe

Binds tablet ingredients and can form tablet coatings.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$28$27$26$25$24 Mar 12 $25.89
iHerb

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

Brand Trust Report
Source Naturals

Founded 1982 · Scotts Valley, CA, USA · 837 products · sourcenaturals.com/

Certifications

1 certification
Fda Gmp Inspections Verified Source

Transparency

2 claims
Third Party Testing Claim — Claimed Source
In House Testing — Verified Source
Related Supplements
Frequently Asked Questions
Is Source Naturals Serene Science®, Theanine Serene® With Relora® a good supplement?

Source Naturals Serene Science®, Theanine Serene® With Relora®, 120 Tablets received a product quality score of 80/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 9 active ingredients with 60 servings per container. Of the 6 inactive ingredients, 5 are rated safe and 0 are flagged for review. The manufacturer, Source Naturals, holds a brand trust score of 66/100 with 1 verified certifications including Fda Gmp Inspections.

What are the ingredients in Source Naturals Serene Science®, Theanine Serene® With Relora®?

Source Naturals Serene Science®, Theanine Serene® With Relora® contains 9 active ingredients: Calories (15), Total Carbohydrate (1 g), Magnesium (as magnesium amino acid complex) (300 mg), Sodium (5 mg), GABA (gamma-aminobutyric acid) (500 mg), Taurine (450 mg), and 3 more. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Source Naturals Serene Science®, Theanine Serene® With Relora® safe to take?

Source Naturals Serene Science®, Theanine Serene® With Relora®, 120 Tablets 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 Source Naturals a trustworthy supplement brand?

Source Naturals receives a brand trust score of 66/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1982 and headquartered in Scotts Valley, CA, USA, the company offers 837 products in their lineup. They hold 1 verified certifications including Fda Gmp Inspections. 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.

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. 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.