Extra Strength Phosphatidyl Serine 300 mg Review

NOW Extra Strength Phosphatidyl Serine 300 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 3 active ingredients with 50 servings per container. All 5 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, NOW, holds a brand trust score of 100/100 with 9 verified certifications including Informed Sport, Npa Gmp, Consumerlab, Labdoor.

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.

NOW Extra Strength Phosphatidyl Serine 300 mg has been analyzed for ingredient safety across all its components. All 5 inactive ingredients — including capsule materials, fillers, and binders — are rated safe based on regulatory data and published safety research. This is a clean formulation with no controversial additives. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

NOW receives a brand trust score of 100/100 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 1759 products in their lineup. They hold 9 verified certifications including Informed Sport, Npa Gmp, Consumerlab, Labdoor. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: NOW has 8 historical regulatory incidents on record, which are factored into the trust score.