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SHOP TODAY FOR UP TO 50% OFF STOREWIDE (CANCEL ANYTIME)
SHOP TODAY FOR UP TO 50% OFF STOREWIDE (CANCEL ANYTIME)
SHOP TODAY FOR UP TO 50% OFF STOREWIDE (CANCEL ANYTIME)
SHOP TODAY FOR UP TO 50% OFF STOREWIDE (CANCEL ANYTIME)
SHOP TODAY FOR UP TO 50% OFF STOREWIDE (CANCEL ANYTIME)
SHOP TODAY FOR UP TO 50% OFF STOREWIDE (CANCEL ANYTIME)
SHOP TODAY FOR UP TO 50% OFF STOREWIDE (CANCEL ANYTIME)
SHOP TODAY FOR UP TO 50% OFF STOREWIDE (CANCEL ANYTIME)
SHOP TODAY FOR UP TO 50% OFF STOREWIDE (CANCEL ANYTIME)
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Natural Stress Support Without Drowsiness
NutraBio L-Theanine is a pure, free-form amino acid supplement derived from Japanese green tea. Known for promoting relaxation and mental clarity, L-Theanine supports a calm yet alert state by influencing key neurotransmitters such as GABA, dopamine, and serotonin.*
Key Benefits:
How It Works:
L-Theanine crosses the blood-brain barrier and stimulates alpha wave production, which is associated with a calm, focused mental state.* It also helps modulate the effects of excitatory neurotransmitters like glutamate, supporting cognitive function and emotional balance.*
Clean and Transparent:
NutraBio L-Theanine contains no fillers, additives, or unnecessary ingredients—just pure L-Theanine in its most bioavailable form.**
We generally take 2–5 business days for order processing and fulfillment before shipping, with total delivery for US orders typically arriving in about 4–9 business days when combining fulfillment and standard shipping. Express shipping options (1–3 business days) are available for faster delivery.
Key Details on the Delivery:
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Health & Wellness

Product Manager
Medicine Specialist
Fitness Enthusiast
PhD