BioStacks
Life Extension

PS Caps 100 mg

1 Capsule · 100 servings · $0.36/serving

iHerbAmazon
Under-dosed

Every active here is dosed below the amount studied to work. See how each one compares in the breakdown below.

Best for

Brain

Ingredients (1)

Phosphatidylserine

33%

Dose

100 mg

Target

300–800 mg

Form

—

Other Ingredients (8)

MaltodextrinBinder

Spikes blood sugar faster than table sugar (glycemic index 85–105). Research links it to gut bacteria changes that may promote intestinal inflammation (Nickerson et al. 2015). Used as a cheap filler — adds nothing beneficial.

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

Calcium SilicateAnti-caking

Inorganic compound used as an anti-caking and flow agent in powdered supplements

Dicalcium PhosphateBinder

Calcium and phosphorus compound used as binder

Microcrystalline CelluloseBinder

Plant-derived cellulose used as a binder and filler in supplements

Stearic AcidLubricant

Saturated fatty acid used as tablet lubricant

Sunflower LecithinEmulsifier

Non-GMO, non-allergenic emulsifier derived from sunflower seeds

Microcrystalline CelluloseBinder

Plant-derived cellulose used as a binder and filler in supplements

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Similar Supplements

Products that cover similar health dimensions based on their ingredients.

Phosphatidyl Serine Matrix 500 mg

Source Naturals

Phosphatidyl Serine Matrix 500 mg

🧠 for Brain

71
Extra Strength Phosphatidyl Serine 300 mg

NOW

Extra Strength Phosphatidyl Serine 300 mg

🧘 for Stress & Mood

67
Phosphatidylserine 400mg

Nutricost

Phosphatidylserine 400mg

🧠 for Brain

47
Phosphatidylserine 200 mg Softgels

Solgar

Phosphatidylserine 200 mg Softgels

🧠 for Brain

43
Sharp Thought

Country Life

Sharp Thought

🧠 for Brain

37

Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.

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