L-Theanine 100mg
L-Theanine 100mg by Metabolic Maintenance delivers the free-form amino acid found naturally in green tea, formulated to support calm focus, relaxed alertness, and a balanced stress response.
May be a fit for
- Adults seeking L-theanine support for calm, focused daytime alertness
- Individuals using L-theanine to maintain relaxed mental clarity without drowsiness
- Those supporting healthy stress response with 100mg L-theanine daily
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L-Theanine 100mg by Metabolic Maintenance delivers the free-form amino acid found naturally in green tea, formulated to support calm focus, relaxed alertness, and a balanced stress response. Each capsule provides a clean, single-ingredient dose suited for those seeking mental clarity without sedation.
Why It's Worth Considering: Metabolic Maintenance uses a straightforward, filler-minimal formulation at a well-studied 100mg dose, practical for both standalone use and stacking with caffeine to support cognitive performance.
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Product details
Who it may suit
May be a fit for
- Adults seeking L-theanine support for calm, focused daytime alertness
- Individuals using L-theanine to maintain relaxed mental clarity without drowsiness
- Those supporting healthy stress response with 100mg L-theanine daily
- People pairing L-theanine with caffeine for balanced cognitive composure
Considerations
- Taking blood pressure medications (L-theanine may lower BP)
- Very low blood pressure already
- Generally very safe — one of the best-tolerated supplements
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L-Theanine is widely praised for promoting calm focus and reducing anxiety without sedation, especially effective when paired with caffeine.
This summary includes broader brand discussion. Individual experiences are not evidence of product effectiveness.
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How fast does L-theanine work?
L-theanine produces measurable alpha brain wave increases within 30-40 minutes of ingestion. Most people notice a sense of calm focus within 30-60 minutes. Unlike prescription anti-anxiety medications, it works quickly without sedation, cognitive impairment, or dependence.
Can I take L-theanine with coffee?
Yes — this is the most well-studied nootropic combination. L-theanine (200mg) smooths caffeine's stimulatory effects, reducing jitteriness and anxiety while preserving alertness and focus. Studies show the combination improves attention and task-switching better than either alone. The ideal ratio is 2:1 theanine to caffeine.
Is L-theanine safe to take every day?
Yes. L-theanine is one of the safest supplements available — it's the primary amino acid in green tea. Doses up to 400mg/day have shown no adverse effects in clinical studies. No tolerance builds up, no withdrawal, and no dependence. It can be taken daily for years without concern.
Does L-theanine help with sleep?
L-theanine improves sleep QUALITY without causing drowsiness — it promotes relaxation and reduces racing thoughts, making it easier to fall asleep. It's particularly effective for people whose insomnia is driven by anxiety or an overactive mind. Take 200-400mg about 1 hour before bed. Unlike melatonin, it won't make you groggy if you need to wake up.
Supplement information is provided for education and is not a substitute for personalized medical advice. Supplements are not intended to diagnose, treat, cure or prevent disease. Read the current product label before use.