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L-Theanine Supplements

Shop L-theanine capsules, powders, and blended focus or relaxation formulas. Compare amount per serving, added caffeine or calming ingredients, serving timing, dosage form, testing information, and cost per serving.

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30 Pack Sold out

MTS Immortal®

MTS Nutrition
$39.99
$39.99 - $39.99
$39.99
$33.99
$33.99 - $33.99
$33.99
Out of stock

PLEASE NOTE: MTS Immortal's next batch is due to arrive the week of 9-18-26! Be sure to sign up for the back-in-stock notice to be notified of its...

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$39.99
$39.99 - $39.99
$39.99
$33.99
$33.99 - $33.99
$33.99
Sold out
Save up to 15% Save %

NOW Foods L-Theanine

NOW Foods
$13.46 - $24.13
$13.46 - $24.13
$13.46
$11.44 - $20.51
$11.44 - $20.51
$11.44
in stock

NOW Foods L-Theanine NOW Foods L-Theanine is a naturally occurring amino acid found in green tea, renowned for its ability to promote relaxation...

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$13.46 - $24.13
$13.46 - $24.13
$13.46
$11.44 - $20.51
$11.44 - $20.51
$11.44
Save up to 15% Save %
Hi-Tech Pharma L-Theanine supplement bottle front label featuring L-Theanine amino acid capsules for focus, relaxation, and daily wellness support

Hi-Tech Pharma L-Theanine

Hi-Tech Pharmaceuticals
$34.94 - $34.94
$34.94
$34.94 - $34.94
$34.94
In stock

Calm Focus for Everyday Performance Hi-Tech Pharma L-Theanine delivers a premium source of one of the most popular amino acids used to support rela...

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$34.94 - $34.94
$34.94
$34.94 - $34.94
$34.94
NOW Foods Mood Support with St. John’s Wort bottle front label herbal mood support supplement. Sold out

NOW Foods Mood Support with St. John’s Wort

NOW Foods
$23.95 - $23.95
$23.95
$23.95 - $23.95
$23.95
Out of stock

Natural Support for a Balanced Mood NOW Foods Mood Support with St. John’s Wort is a thoughtfully formulated herbal blend designed to help support ...

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$23.95 - $23.95
$23.95
$23.95 - $23.95
$23.95
Sold out

Tiger Fitness buying guide

How to Choose L-Theanine

L-theanine appears in both relaxation products and stimulant-containing focus formulas. Check the complete label and caffeine amount because products in this ingredient category may be intended for very different times of day.

Follow label directions and review combined sedating or stimulant ingredients. Consult a qualified healthcare professional if you take medication, have a health condition, are pregnant or nursing, or use it for persistent anxiety or sleep symptoms.

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