BioStacks
NOW

Phosphatidyl Serine 100 mg

1 Capsule · 60 servings · $0.62/serving

iHerbAmazon

Best for

Liver

Ingredients (3)

Choline

100%

Dose

100 mg

Target

100–500 mg

Form

Budget

Phosphatidyl Serine

33%

Dose

100 mg

Target

300–800 mg

Form

—

Inositol

3%

Dose

50 mg

Target

2000–4000 mg

Form

—

Other Ingredients (4)

Magnesium StearateLubricant

A salt of stearic acid used as a lubricant in tablet and capsule production

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

Microcrystalline CelluloseBinder

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

Microcrystalline CelluloseBinder

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

How to Take It

Best taken in the evening

Evening use targets nighttime cortisol; fat-soluble, so take with food.

With food

On the label

Take 1 capsule 1 to 3 times daily, preferably with food.

General guidance based on the ingredients, not a substitute for the label or your doctor.

Price Check

$36.99

$20$50$100

Near the median of 32 PS supplements

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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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