L-Theanine - 60 Capsules

Calm Focus. Clear Thinking. No Overstimulation.

Premier Research L-Theanine delivers 200 mg of L-theanine per capsule to support a calm, focused mental state, clearer thinking and a balanced response to everyday stress.

Ideal on its own or alongside caffeine, this clean-label formula provides targeted L-theanine support without unnecessary fillers, binders or synthetic excipients.

Why You’ll Love It

• 200 mg L-theanine per capsule: A clinically relevant dosage commonly used in L-theanine research.
• Supports calm focus: Helps promote an attentive, relaxed mental state without unwanted drowsiness or overstimulation.
• Supports mental clarity: L-theanine helps maintain focus and cognitive composure during busy or demanding periods.
• Pairs well with caffeine: Commonly used alongside caffeine to support smoother, sustained focus with fewer unwanted jitters.
• Clean-label formula: No unnecessary non-nutritive fillers, binders or synthetic excipients.
• Third-party tested: Tested to help verify purity, potency and consistency.
• Vegan-friendly: Non-GMO, gluten-free and soy-free.
• Quality manufacturing: Manufactured in a GMP-certified facility.

Premier Research L-Theanine 200 mg

L-theanine is an amino acid naturally associated with tea and is widely used to support relaxation without compromising mental alertness.

Premier Research L-Theanine provides 200 mg of L-theanine in every capsule, making it a convenient option for people looking to support focus, mental clarity and a calm response to everyday demands.

L-theanine is associated with alpha brain wave activity, which is linked with a relaxed yet attentive mental state. It also interacts with neurotransmitter systems involving glutamate, GABA and serotonin, helping support the balance between relaxation and mental performance.

This makes L-theanine particularly useful when calm concentration is the goal. It may also complement caffeine by supporting focused energy without excessive stimulation.

Clean, Targeted L-Theanine Support

Premier Research focuses on purposeful formulations without unnecessary additives. Each capsule provides a targeted 200 mg serving of L-theanine in a vegan-friendly capsule.

• 200 mg L-theanine per capsule
• Third-party tested
• Vegan-friendly
• Non-GMO
• Gluten-free
• Soy-free
• Manufactured in a GMP-certified facility