BioStacks
Source Naturals

Theanine Serene with Magnesium

2 Tablets · 30 servings · $0.40/serving

iHerbAmazon

Best for

Stress & MoodSleep

Ingredients (5)

L-Theanine

100%

Dose

200 mg

Target

100–250 mg

Form

—

Magnesium

100%

Dose

300 mg

Target

100–400 mg

Form

Standard

GABA

100%

Dose

500 mg

Target

100–300 mg

Form

—

Taurine

45%

Dose

450 mg

Target

1000–3000 mg

Form

—

Holy Basil Leaf Extract

33%

Dose

100 mg

Target

300–600 mg

Form

—

Other Ingredients (5)

SorbitolSweetener

A FODMAP sugar alcohol that may trigger GI discomfort (bloating, gas) in individuals with IBS or sorbitol malabsorption, even at small amounts found in supplements. Avoided in low-FODMAP diets.

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

Hydroxypropyl CelluloseBinder

An inert modified-cellulose polymer used as a binder, film-former, and disintegrant.

Microcrystalline CelluloseBinder

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

Stearic AcidLubricant

Saturated fatty acid used as tablet lubricant

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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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