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Find natural L-Theanine supplements in capsule form to support mental calmness and relaxation. L-Theanine is a special amino acid supplement found in green tea and is highly recommended to improve attention and relaxation.

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  1. Natural Factors Stress-Relax Suntheanine L-Theanine 60 chewables

    Special Price $18.17 Regular Price $25.95 Save 30%
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    Rating:
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    3 Reviews
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  2. NOW L-Theanine 200mg 60 vcaps

    Special Price $16.89 Regular Price $25.99 Save 35%
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    Rating:
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    2 Reviews
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  3. Jarrow Formulas Theanine 200 60 vcaps

    Special Price $16.89 Regular Price $25.99 Save 35%
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  4. Pharmaca L-Theanine 200mg 60 chewables

    Special Price $15.99 Regular Price $19.99 Save 20%
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    Rating:
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    1 Review
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  5. NeuroScience GABA Trex 60 tablets

    $34.00
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  6. Jarrow Formulas Theanine 100mg 60 vcaps

    Special Price $10.37 Regular Price $15.95 Save 35%
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    Rating:
    100%
    1 Review
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  7. Natural Factors L-Theanine Suntheanine Stress-Relax 120 tablets

    Special Price $34.97 Regular Price $49.95 Save 30%
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  8. Natural Factors Stress-Relax Suntheanine L-Theanine 60 vcaps

    Special Price $18.17 Regular Price $25.95 Save 30%
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  9. Source Naturals Serene Science L-Theanine 60 tablets

    Special Price $23.09 Regular Price $32.98 Save 30%
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  10. Enzymatic Therapy L-Theanine 60 Caps

    Special Price $12.29 Regular Price $20.49 Save 40%
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  11. Source Naturals Serene Science Theanine Serene 120 tablets

    Special Price $20.13 Regular Price $28.75 Save 30%
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  12. Zhou Nutrition Energy + Focus 60 vcaps

    Special Price $19.59 Regular Price $27.99 Save 30%
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  13. Thorne Research Theanine 90 vcaps

    $58.00
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