Source Naturals Screen Time Stamina™, 120 Tablets supplement bottle
Source Naturals

Screen Time Stamina™, 120 Tablets

What We Researched
26 active ingredients analyzed · 7 inactive ingredients decoded · 1 brand certification checked · 2 retailers compared · Last updated: Mar 2026
76
Product Score Fair
66
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin A (as beta-carotene 2,500 IU & palmitate 2,500 IU) 5000 IU 100%
Vitamin D3 (as cholecalciferol) 5000 IU 1,250%
Rhodiola Root Extract 640 mg *
Ashwagandha Root Extract 500 mg *
Gotu Kola Aerial Parts Extract 400 mg *
Asian Ginseng Root Extract 200 mg *
Green Tea Leaf Extract (50% caffeine) 200 mg *
N-Acetyl Cysteine 100 mg *
L-Theanine 100 mg *
Turmeric Rhizome Extract 80 mg *
N-Acetyl L-Tyrosine 75 mg *
DMAE (as bitartrate) 60 mg *
Ginkgo Leaf Extract (24% flavone glycosides & 6% terpene lactones) 60 mg *
Taurine 50 mg *
Holy Basil Leaf Extract 50 mg *
Schisandra Fruit 30 mg *
Natural trans-Resveratrol (from Polygonum cuspidatum root extract) 30 mg *
Eleuthero Root Extract 20 mg *
Vinpocetine 15 mg *
Lutein 6 mg *
Zeaxanthin 1 mg *
Huperzine A (from Huperzia serrata leaf extract) 80 mcg *
Bioavailability Very Good

Absorption Rating

  • Vitamin A (as beta-carotene 2,500 IU & palmitate 2,500 IU) Fair
  • Vitamin D3 (as cholecalciferol) Good
  • Rhodiola Root Extract Good
  • Ashwagandha Root Extract Good
  • Gotu Kola Aerial Parts Extract Fair
  • Asian Ginseng Root Extract Good
  • Green Tea Leaf Extract (50% caffeine) Good
  • N-Acetyl Cysteine Good
  • L-Theanine Good
  • Turmeric Rhizome Extract Poor
  • N-Acetyl L-Tyrosine Fair
  • DMAE (as bitartrate) Fair
  • Ginkgo Leaf Extract (24% flavone glycosides & 6% terpene lactones) Poor
  • Taurine Good
  • Holy Basil Leaf Extract Fair
  • Schisandra Fruit Good
  • Natural trans-Resveratrol (from Polygonum cuspidatum root extract) Good
  • Eleuthero Root Extract Good
  • Vinpocetine Fair
  • Lutein Good
  • Zeaxanthin Good
  • Huperzine A (from Huperzia serrata leaf extract) Good
Other Ingredients Excellent

Fillers & Additives

  • Microcrystalline Cellulose
  • Hydroxypropyl Cellulose
  • Stearic Acid
  • Dibasic Calcium Phosphate
  • Modified Cellulose Gum
  • Magnesium Stearate
  • Silica
Efficacy Poor

Dosage Analysis

  • Vitamin A (as beta-carotene 2,500 IU & palmitate 2,500 IU) 5000 IU Under-dosed
  • Vitamin D3 (as cholecalciferol) 5000 IU High
  • Rhodiola Root Extract 640 mg Effective
  • Ashwagandha Root Extract 500 mg Effective
  • Gotu Kola Aerial Parts Extract 400 mg Under-dosed
  • Asian Ginseng Root Extract 200 mg Effective
  • Green Tea Leaf Extract (50% caffeine) 200 mg Under-dosed
  • N-Acetyl Cysteine 100 mg Under-dosed
  • L-Theanine 100 mg Effective
  • Turmeric Rhizome Extract 80 mg Under-dosed
  • N-Acetyl L-Tyrosine 75 mg Under-dosed
  • DMAE (as bitartrate) 60 mg Under-dosed
  • Ginkgo Leaf Extract (24% flavone glycosides & 6% terpene lactones) 60 mg Under-dosed
  • Taurine 50 mg Under-dosed
  • Holy Basil Leaf Extract 50 mg Under-dosed
  • Schisandra Fruit 30 mg Under-dosed
  • Natural trans-Resveratrol (from Polygonum cuspidatum root extract) 30 mg Under-dosed
  • Eleuthero Root Extract 20 mg Under-dosed
  • Vinpocetine 15 mg Effective
  • Lutein 6 mg Under-dosed
  • Zeaxanthin 1 mg Under-dosed
  • Huperzine A (from Huperzia serrata leaf extract) 80 mcg Effective

Supplement Facts

Ingredient Amount % Daily Value
Calories 10
Total Carbohydrate 2 g 1%
Dietary Fiber 1 g 4%
Vitamin A (as beta-carotene 2,500 IU & palmitate 2,500 IU) 5000 IU 100%
Vitamin D3 (as cholecalciferol) 5000 IU 1,250%
Sodium 10 mg <1`%
Rhodiola Root Extract 640 mg *
Ashwagandha Root Extract 500 mg *
Gotu Kola Aerial Parts Extract 400 mg *
Asian Ginseng Root Extract 200 mg *
Green Tea Leaf Extract (50% caffeine) 200 mg *
N-Acetyl Cysteine 100 mg *
L-Theanine 100 mg *
Turmeric Rhizome Extract 80 mg *
N-Acetyl L-Tyrosine 75 mg *
DMAE (as bitartrate) 60 mg *
Ginkgo Leaf Extract (24% flavone glycosides & 6% terpene lactones) 60 mg *
Taurine 50 mg *
Holy Basil Leaf Extract 50 mg *
Schisandra Fruit 30 mg *
Natural trans-Resveratrol (from Polygonum cuspidatum root extract) 30 mg *
Eleuthero Root Extract 20 mg *
Vinpocetine 15 mg *
Lutein 6 mg *
Zeaxanthin 1 mg *
Huperzine A (from Huperzia serrata leaf extract) 80 mcg *

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Hydroxypropyl Cellulose Safe

Binds tablet ingredients and can form tablet coatings.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Dibasic Calcium Phosphate Generally_safe

It is used as a filler and to improve tablet hardness.

Modified Cellulose Gum Generally_safe

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

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.

$37$36$35$34$33 Mar 12 $34.99
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
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 Screen Time Stamina™, 120 Tablets a good supplement?

Source Naturals Screen Time Stamina™, 120 Tablets received a product quality score of 76/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 26 active ingredients with 40 servings per container. Of the 7 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 Screen Time Stamina™, 120 Tablets?

Source Naturals Screen Time Stamina™, 120 Tablets contains 26 active ingredients: Calories (10), Total Carbohydrate (2 g), Dietary Fiber (1 g), Vitamin A (as beta-carotene 2,500 IU & palmitate 2,500 IU) (5000 IU), Vitamin D3 (as cholecalciferol) (5000 IU), Sodium (10 mg), and 20 more. Notable high-dose ingredients include Vitamin D3 at 1,250% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Source Naturals Screen Time Stamina™, 120 Tablets safe to take?

Source Naturals Screen Time Stamina™, 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.

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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.