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Browse supplements containing L-Theanine.

L-Theanine
SleepFocus & CognitionEnergyGut HealthGeneral Health

Asahi Neru Navi

by Asahi Group Foods

Sleep quality improvement supplement with L-theanine and GABA.

FANCL Good Sleep

by FANCL

Capsule

Functional food with L-serine for deep sleep quality support.

FANCL Stress Care GABA

by FANCL

Functional food with GABA for stress management and mental well-being.

FANCL Yokinemuri Support

by FANCL

tablet

Enhanced sleep support with L-serine and GABA for deep sleep quality

Herb Pharm Brain & Memory

by Herb Pharm

liquid

Herbal brain tonic liquid extract blend with ginkgo, bacopa, and other botanicals for memory and mental clarity.

Jarrow Formulas Theanine 200mg

by Jarrow Formulas

capsule

Suntheanine L-theanine 200mg for promoting alpha brain waves, calm focus, and sleep quality

Kobayashi Nemi no Megumi

by Kobayashi Pharmaceutical

Sleep support supplement with L-theanine for relaxation before bed.

Natrol Cognium

by Natrol

tablet

Cera-Q silk protein hydrolysate clinically proven to improve memory and cognitive performance in healthy adults.

NOW Foods L-Theanine 200mg

by NOW Foods

Capsule

Pure L-Theanine from green tea. Promotes calm alertness and focus without jitters. Works synergistically with caffeine.

NOW L-Theanine 200mg

by NOW Foods

capsule

Pure L-theanine 200mg per capsule for calm focus and relaxation without sedation

Onnit Alpha Brain

by Onnit

capsule

Onnit's flagship nootropic formula clinically studied to support memory, focus, and cognitive processing speed with Alpha GPC, Bacopa, and L-theanine

Onnit Alpha Brain Black Label

by Onnit

capsule

Premium version of Alpha Brain with an enhanced formula featuring additional cognitive ingredients for heightened mental performance and focus

Pure Encapsulations L-Theanine

by Pure Encapsulations

capsule

Suntheanine L-theanine 200mg for stress reduction, relaxation, and focus support without drowsiness

Source Naturals Serene Science L-Theanine

by Source Naturals

tablet

L-theanine amino acid from green tea to promote calm, focused relaxation without drowsiness.

Showing 1–14 of 14 supplements