Jarrow Formulas PS100, Phosphatidylserine, 100 mg supplement bottle
Jarrow Formulas

PS100, Phosphatidylserine, 100 mg Review

What We Researched
1 active ingredient analyzed · 12 inactive ingredients decoded · 7 brand certifications checked · Last updated: Aug 2026
100
Product Score Excellent
98
Brand Score Excellent

Two independent scores — the product and the brand behind it, never blended into one number. See our methodology.

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Phosphatidylserine (PS) 100 mg †
Bioavailability Excellent

Absorption Rating

  • Phosphatidylserine (PS) Good
Other Ingredients Excellent

Fillers & Additives

  • Silicified Microcrystalline Cellulose
  • Mixed Tocopherols
  • Vegetable Magnesium Stearate
  • Ascorbyl Palmitate
  • Bovine Gelatin
  • Cellulose
  • Magnesium Stearate
  • Starch
  • Modified Food Starch
  • Silica
  • Silicon Dioxide
  • Vegetable Capsule
Efficacy Excellent

Dosage Analysis

  • Phosphatidylserine (PS) 100 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Phosphatidylserine (PS) 100 mg †

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Silicified Microcrystalline Cellulose Generally_safe

It is used as a filler and flow agent in supplements.

Mixed Tocopherols Safe

Prevents oxidation and rancidity in oil-based supplements.

Vegetable Magnesium Stearate Safe

Prevents ingredients from sticking to equipment. Derived from vegetable sources.

Ascorbyl Palmitate Safe

Prevents oxidation and extends shelf life of oil-based supplements.

Bovine Gelatin Safe

Forms capsule shells. Sourced from bovine (cow) collagen.

Cellulose Safe

Provides bulk and structure in tablets and capsules.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Starch Generally_safe

It is used as a filler, binder, or thickener.

Modified Food Starch Generally_safe

It is used as a filler, binder, or thickener in supplements.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Vegetable Capsule Safe

It is used as a vegetarian alternative to gelatin capsules.

Brand Trust Report
Jarrow Formulas

Founded 1977 · Los Angeles, California, USA · 138 products · jarrow.com/

Certifications

7 certifications
Consumerlab Verified Source
Fda Gmp Inspections Verified Source
Non Gmo Project Verified Source
Usda Organic Verified Source
Vegan Certified Verified Source
IGEN Non-GMO Tested Verified
NSF Certified Verified

Transparency

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

Violation History

2 incidents
Recall Liquid L-Carnitine2018-01-15Source
Prop 65 Lead2017-09-07Source
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Frequently Asked Questions
Is Jarrow Formulas PS100, Phosphatidylserine a good supplement?

Jarrow Formulas PS100, Phosphatidylserine, 100 mg 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 1 active ingredients Of the 12 inactive ingredients, 9 are rated safe and 0 are flagged for review. The manufacturer, Jarrow Formulas, holds a brand trust score of 98/100 with 7 verified certifications including Consumerlab, Fda Gmp Inspections, Non Gmo Project, Usda Organic.

What are the ingredients in Jarrow Formulas PS100, Phosphatidylserine?

Jarrow Formulas PS100, Phosphatidylserine contains 1 active ingredients: Phosphatidylserine (PS) (100 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Jarrow Formulas PS100, Phosphatidylserine safe to take?

Jarrow Formulas PS100, Phosphatidylserine, 100 mg 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 Jarrow Formulas a trustworthy supplement brand?

Jarrow Formulas receives a brand trust score of 98/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1977 and headquartered in Los Angeles, California, USA, the company offers 138 products in their lineup. They hold 7 verified certifications including Consumerlab, Fda Gmp Inspections, Non Gmo Project, Usda Organic. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Jarrow Formulas 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 — read our methodology. 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.