10 Best L Theanine - May 2026

19M consumers helped this year.

Last Updated: 27-05-2026

L Theanine 400mg Capsules - 99.6% Pure L-Theanine | 5 Months Supply - 150 Capsules | Supports Relaxation & Focus, Promotes Calm | Zero Additives, Vegan & Non-GMO | GMP - Certified, Lab Tested

NUTRINATION

9.8

CHECK PRICE

MORE DEALS (1)

Nutricost L-Theanine 200mg, 120 Capsules - Non-GMO, Gluten Free

Nutricost

9.6

CHECK PRICE

MORE DEALS (1)

Best Value

L Theanine 400mg | 120 Vegan Capsules - 4 Months Supply | Good Alternative to L-Theanine Powder, Gummies and Drops | UK Made L'Theanine Supplement

Nutrivo

9.5

CHECK PRICE

MORE DEALS (1)

L-Theanine - 401mg - 180 Capsules - 6 Months Supply | with Vitamin B6 & Black Pepper | 1 Capsule per Day | Vegan & Magnesium Stearate-Free - L Theanine Supplement for Men & Women - Made in Europe

WeightWorld

9.2

CHECK PRICE

MORE DEALS (1)

- 17%

Vinco L-Theanine Supplement - 400mg x 120 High Strength L Theanine Capsules - 99%+ Purity - Supports Sleep & Relaxation - Non-GMO & Gluten Free - Made in The UK

Vinco Supplements

9.1

CHECK PRICE

MORE DEALS (1)

- 27%

L Theanine Enriched with Vitamin B6 - High Strength L Theanine 400mg Natural Nootropics from Green Tea - 120 Vegan L-Theanine Capsules - Made in The UK Theanine Supplements by New Leaf

NEW LEAF PRODUCTS

8.8

CHECK PRICE

MORE DEALS (1)

L-Theanine 200mg from Green Tea - 90 Vegan Capsules - Amino Acid Supplement – Resealable and Recyclable Pouch by Alpha01

ALPHA01

8.6

CHECK PRICE

MORE DEALS (1)

L-Theanine 400mg with BioPerine® | 120 Vegan Capsules | High Absorption & Bioavailablity L Theanine | Enhanced Sleep at Night | Boost Focus & Relieve Stress | 4 Months Supply | UK Made | by NutriVolv

NutriVolv

8.4

CHECK PRICE

MORE DEALS (1)

- 16%

L Theanine Enriched with Vitamin B6 - High Strength L Theanine 400mg Natural Nootropics from Green Tea - 360 Vegan L-Theanine Capsules - Made in The UK Theanine Supplements By New Leaf

NEW LEAF PRODUCTS

8.2

CHECK PRICE

MORE DEALS (1)

Nature’s Best L-Theanine 200mg - Small Easy-to-Swallow Capsules - 60 Capsules (2 Month Supply)

NATURE'S BEST

8.1

CHECK PRICE

MORE DEALS (1)