BioStacks
Nature Made

Chewable L-Theanine 200mg

1 Tablet · 50 servings · $0.42/serving

iHerbAmazon

Best for

Stress & Mood

Ingredients (1)

L-Theanine

100%

Dose

200 mg

Target

100–250 mg

Form

—

Nutrition

Calories, macros & sodium.

  • Sodium5 mg

Other Ingredients (8)

SucroseSweetener

Added sugars and high glycemic load; dental caries risk

XylitolSweetener

A FODMAP sugar alcohol that can cause GI distress (bloating, gas, diarrhea) at moderate doses (>10-20g/day), though supplement amounts are typically small. Extremely toxic to dogs — households with pets should store securely.

Magnesium StearateLubricant

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

Natural FlavorsFlavor

Broad regulatory category of flavor constituents derived from natural sources. Composition is proprietary and not disclosed — 'Natural Flavors' can include several hundred different compounds depending on the target flavor profile, including hexane-extracted constituents and proprietary carrier solvents. 'Natural' is a regulatory definition (21 CFR §101.22), not a safety guarantee.

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

Citric AcidAcidulant

Natural acid derived from citrus fruits

Sea SaltFlavor

Basic food-grade salt used for taste in supplements

Stearic AcidLubricant

Saturated fatty acid used as tablet lubricant

How to Take It

Best taken in the evening

Calming — common before bed, or in the morning when paired with caffeine for focus.

With or without food

On the label

Adults, chew 1 tablet per day as needed. Store tightly closed, in a cool, dry place, out of reach of children.

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

Price Check

$20.88

$10$20$50

Near the median of 101 theanine 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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