BioStacks
Nature's Way

Sustained Focus

3 Capsules · 20 servings · $1.42/serving

84 / 100Excellent

Score Breakdown

Formulation
84
Safety
100
Final score
84/100

Ingredients (2)

Neumentix Spearmint leaf extract

100%

Dose

900 mg

Target

500–900 mg

Form

L-Theanine

100%

Dose

200 mg

Target

100–250 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

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.