A calm-focus amino acid designed to help you stay composed, clear, and mentally controlled — without drowsiness. NutraBio L-Theanine delivers a clinically relevant 200 mg dose per capsule for smooth, steady relaxation and mental balance.
L-Theanine works by supporting alpha-wave brain activity — the calm-but-focused state you feel when you're locked in, not overwhelmed. It pairs exceptionally well with daily caffeine use by reducing jitters and crash while improving clarity and mood. Whether you're dealing with high stress, constant output, or simply want a cleaner sense of focus throughout the day, this is an effortless, stimulant-free way to stay centered. One ingredient. One purpose. Real presence.
L-Theanine (200 mg): An amino acid that supports alpha-wave brain patterns associated with calm concentration, improved mood balance, and reduced stress response — without dulling alertness.
Take 1 capsule daily with or without food. For enhanced calm focus, take alongside your morning caffeine or pre-workout.
We carry NutraBio L-Theanine because mental control is a performance advantage — in training, work, and daily life. It fits our standard for clean, effective, single-ingredient support that helps athletes stay focused without adding stimulants or noise.
Q: Will it make me sleepy?
A: No — L-Theanine supports calm focus, not sedation.
Q: Can I take this with coffee or pre-workout? A: Yes — it actually pairs extremely well with caffeine to smooth energy and improve clarity.
Q: How long does one bottle last? A: Each bottle provides 90 servings (1 capsule per serving).
Q: Is this formula stimulant-free? A: Completely — zero caffeine, zero crash.
Q: Can I take this with coffee or pre-workout? A: Yes — it actually pairs extremely well with caffeine to smooth energy and improve clarity.
Q: How long does one bottle last? A: Each bottle provides 90 servings (1 capsule per serving).
Q: Is this formula stimulant-free? A: Completely — zero caffeine, zero crash.