12 products
L Theanine
L-Theanine is an amino acid commonly found in tea that supports relaxation and mental focus without causing drowsiness.
- Free UK delivery over £75
- Dispatched in 1–2 working days
- 14-day returns
Products
9 products · 12 with every flavour and size
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Swanson
Suntheanine L-Theanine - 200mg - 60 vcaps
£27.99£33.99£0.47/itemIn stock · Ships in 1–2 days
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NOW Foods
L-Theanine with Inositol and Taurine - 100mg - 90 chewables
£20.99£25.99£0.23/itemIn stock · Ships in 1–2 days
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Doctors Best
L-Theanine with Suntheanine - 150mg - 90 vcaps
£34.99£41.99£0.39/itemIn stock · Ships in 1–2 days
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NOW Foods
Double Strength L-Theanine - 200mg - 120 vcaps
£32.99£39.99£0.27/itemIn stock · Ships in 1–2 days
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NOW Foods
L-Theanine with Decaf Green Tea - 100mg - 90 vcaps
£18.99£22.99£0.21/itemIn stock · Ships in 1–2 days
About L Theanine
L-Theanine is an amino acid commonly found in tea that supports relaxation and mental focus without causing drowsiness. Available as powders, capsules, and chewables, it can be combined with other ingredients like Inositol and Taurine for additional benefits.