L-Theanine is a non-essential amino acid in the practical form of capsules. This substance is found in nature mainly in the leaves of green tea. In supplement form, people take it alone or combine it with caffeine, for example in coffee or a supplement. Thanks to the plant-based formula, the capsules are also suitable for vegans.
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L-Theanine - GymBeam
4.7Average from 142 reviews
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Charlo Pace
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All reviews
L-Theanine - GymBeam
4.7Average from 142 reviews
(116 reviews)
(15 reviews)
(8 reviews)
(1 review)
(2 reviews)
English reviews (1)
Verified purchases (1)
Positive (1)
Negative (0)
Reviews in other countries (141)
Charlo Pace
Verified purchase4/27/2026
Not bad at allWas this review helpful to you?
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