BioStacks
Swanson

ProBiotic-4

1 Capsule · 60 servings · $0.18/serving

Under-dosed

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

Best for

Ingredients (6)

NutraFlora scFOS

3%

Dose

125 mg

Target

5000–10000 mg

Form

Bifidobacterium bifidum

Amount not found

Bifidobacterium lactis

Amount not found

Lactobacillus acidophilus

Amount not found

Lactobacillus casei

Amount not found

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

HypromelloseCapsule

Plant-derived capsule material from cellulose

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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.