NOW Extra Strength Phosphatidyl Serine, 300 mg, 50 Softgels supplement bottle
NOW

Extra Strength Phosphatidyl Serine, 300 mg, 50 Softgels

What We Researched
3 active ingredients analyzed · 4 inactive ingredients decoded · 5 brand certifications checked · 2 retailers compared · Last updated: Mar 2026
100
Product Score Excellent
89
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Phosphatidyl Serine 300 mg *
Bioavailability Excellent

Absorption Rating

  • Phosphatidyl Serine Good
Other Ingredients Excellent

Fillers & Additives

  • Mct oil (medium chain triglycerides)
  • Softgel capsule (bovine gelatin, glycerin, water, caramel color)
  • Sunflower lecithin and silica
  • Phosphatidyl serine from soy
Efficacy Excellent

Dosage Analysis

  • Phosphatidyl Serine 300 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Calories 10
Total Fat 1 g 1%
Phosphatidyl Serine 300 mg *

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$43$42$41$40$39 Mar 12 $40.94
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
NOW

Founded 1968 · Bloomingdale, Illinois, USA · 53 products · nowfoods.com

Certifications

5 certifications
Informed Sport Verified Source
Npa Gmp Verified Source
Fda Gmp Inspections Verified Source
Non Gmo Project Verified Source
Usda Organic Verified Source

Transparency

3 claims
Third Party Testing Claim — Verified Source
Testing Lab Disclosure — Claimed
In House Testing — Verified Source
Related Supplements
Frequently Asked Questions
Is NOW Extra Strength Phosphatidyl Serine, 300 mg a good supplement?

NOW Extra Strength Phosphatidyl Serine, 300 mg, 50 Softgels received a product quality score of 100/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 3 active ingredients with 50 servings per container. Of the 4 inactive ingredients, 0 are rated safe and 0 are flagged for review. The manufacturer, NOW, holds a brand trust score of 89/100 with 5 verified certifications including Informed Sport, Npa Gmp, Fda Gmp Inspections, Non Gmo Project.

What are the ingredients in NOW Extra Strength Phosphatidyl Serine, 300 mg?

NOW Extra Strength Phosphatidyl Serine, 300 mg contains 3 active ingredients: Calories (10), Total Fat (1 g), Phosphatidyl Serine (300 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is NOW Extra Strength Phosphatidyl Serine, 300 mg safe to take?

NOW Extra Strength Phosphatidyl Serine, 300 mg, 50 Softgels 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 NOW a trustworthy supplement brand?

NOW receives a brand trust score of 89/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1968 and headquartered in Bloomingdale, Illinois, USA, the company offers 53 products in their lineup. They hold 5 verified certifications including Informed Sport, Npa Gmp, Fda Gmp Inspections, Non Gmo Project. 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.