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HFL Health Findings Lab

L-Theanine

An amino acid primarily found in green tea leaves that promotes relaxation without drowsiness, often paired with caffeine to smooth out the "jitters".

Clinical Profile

Detailed clinical review of L-Theanine...

Clinical Summary

A non-protein amino acid primarily found in tea leaves. It promotes a state of relaxed alertness and is highly synergistic with caffeine, effectively smoothing out the "jitters" while sustaining focus.

Dosage Guidelines

100-200mg daily. Most effective when taken in a 2:1 or 1:1 ratio with caffeine (e.g., 200mg L-Theanine to 100mg Caffeine).

Safety & Side Effects

Extremely well-tolerated. Very high doses may cause mild headaches or drowsiness in isolated cases.

Known Interactions

May mildly lower blood pressure; use caution when combined with antihypertensive drugs or excessive alcohol.

Medical Disclaimer

The information provided in this clinical review is for educational and informational purposes only. It is not intended to be a substitute for professional medical advice, diagnosis, or treatment.

*These statements have not been evaluated by the Food and Drug Administration (FDA). This product or ingredient is not intended to diagnose, treat, cure, or prevent any disease.

Always consult your physician or other qualified health provider with any questions you may have regarding a medical condition, or before beginning any new diet, fitness, supplement, or treatment regimen, especially if you have pre-existing medical conditions or are taking prescribed medications.

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