Best L-Theanine Supplements

14 products compared by price per gram of active ingredient

Form:All forms14Powder2Capsule10Tablet1Softgel1
Brand:BulkSupplementsCalifornia Gold NutritionDoctor's BestEVLutionForce FactorKALLife ExtensionMetabolic Maintenance
Package Size:All sizes1260–1207120–2504250+1
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#1
Bulk Supplements, L-Theanine Powder, 1 Kilogram (2.2 lbs)
$0.05per gram
$50.97 / bag
Bulk Supplements, L-Theanine Powder, 1 Kilogram (2.2 lbs)
BulkSupplementsBulkSupplements4 options
Per Serving$0.01
Servings5000
Formpowder
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BulkSupplements5000 ctBulk Supplements, L-Theanine Powder, 1 Kilogram (2.2 lbs)
$50.97Buy
2500 ctBulk Supplements, L-Theanine Powder, 500 Grams (11.1 bs)
$34.97Buy
1250 ctL-Theanine Powder
$23.97Buy
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#2
L-Theanine Capsules
$0.29per gram
$20.97 / bottle
L-Theanine Capsules
BulkSupplementsBulkSupplements
Per Serving$0.06
Servings365
Formcapsule
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#3
Vitamatic, L-Theanine, 240 Tablets, (200 mg per Tablet)
$0.31per gram
$14.99 / bottle
Vitamatic, L-Theanine, 240 Tablets, (200 mg per Tablet)
VitamaticiHerbNew
Per Serving$0.12
Servings120
Formtablet
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Save 84%
#4
Nutricost, L-Theanine, 200 mg, 240 Capsules
$0.42per gram
$19.95 / bottle
Nutricost, L-Theanine, 200 mg, 240 Capsules
NutricostiHerbNew4 options
Per Serving$0.08
Servings240
Formcapsule
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iHerb240 ctNutricost, L-Theanine, 200 mg, 240 Capsules
$19.95Buy
120 ctNutricost, L-Theanine, 200 mg, 120 capsules
$11.95Buy
30 ctNutricost, L-Theanine, 200 mg, 30 Capsules
$5.70Buy
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#5
Primaforce, L-Theanine, 200 mg, 120 Capsules
$0.52per gram
$12.50 / bottle
Primaforce, L-Theanine, 200 mg, 120 Capsules
PrimaforceiHerbNew
Per Serving$0.10
Servings120
Formcapsule
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#6
Organika, L-Theanine, 225 mg, 90 Vegetarian Capsules
$0.55per gram
$11.04 / bottle
Organika, L-Theanine, 225 mg, 90 Vegetarian Capsules
OrganikaiHerbNew
Per Serving$0.12
Servings90
Formcapsule
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Save 78%
#7
Force Factor, L-Theanine, Extra Strength, 200 mg, 60 Vegetarian Capsules
$0.58per gram
$6.99 / bottle
Force Factor, L-Theanine, Extra Strength, 200 mg, 60 Vegetarian Capsules
Force FactoriHerbNew2 options
Per Serving$0.12
Servings60
Formcapsule
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iHerb60 ctForce Factor, L-Theanine, Extra Strength, 200 mg, 60 Vegetarian Capsules
$6.99Buy
60 ctForce Factor, Magnesium + L-Theanine, 120 Vegetable Capsules
$19.97Buy
Save 73%
#8
NutraLife, L-Theanine, 200 mg, 60 Capsules
$0.71per gram
$8.54 / bottle
NutraLife, L-Theanine, 200 mg, 60 Capsules
NutraLifeiHerbNew
Per Serving$0.14
Servings60
Formcapsule
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#9
NOW Foods Supplements, L-Theanine Pure Powder, Tension Management*, Amino Acid, 1-Ounce
$0.75per gram
$19.80 / bag
NOW Foods Supplements, L-Theanine Pure Powder, Tension Management*, Amino Acid, 1-Ounce
NOW FoodsAmazon2 options · 2 retailers
Per Serving$0.21
Servings93
Formpowder
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Amazon93 ctNOW Foods Supplements, L-Theanine Pure Powder, Tension Management*, Amino Acid, 1-Ounce
$19.80Buy
iHerb94 ctNOW Foods, L-Theanine Pure Powder, 1 oz (28 g)
$22.03Buy
Save 71%
#10
Nature's Truth L Theanine | 200mg | 60 Quick Release Capsules | Non-GMO & Gluten Free Supplement
$0.75per gram
$8.99 / bottle
Nature's Truth L Theanine | 200mg | 60 Quick Release Capsules | Non-GMO & Gluten Free Supplement
Nature's TruthAmazon2 options · 2 retailers
Per Serving$0.15
Servings60
Formcapsule
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Amazon60 ctNature's Truth L Theanine | 200mg | 60 Quick Release Capsules | Non-GMO & Gluten Free Supplement
$8.99Buy
iHerb60 ctNature's Truth, L-Theanine, 200 mg, 60 Quick Release Capsules
$9.08Buy
Save 43%
#11
Sports Research L-Theanine 200mg with Organic Coconut Oil | Suntheanine Supplement for Focus, Relaxation & Alertness | Double Strength, Non-GMO & Gluten Free
$1.48per gram
$35.47 / bottle
Sports Research L-Theanine 200mg with Organic Coconut Oil | Suntheanine Supplement for Focus, Relaxation & Alertness | Double Strength, Non-GMO & Gluten Free
Sports ResearchAmazon4 options · 2 retailers
Per Serving$0.30
Servings120
Formsoftgel
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Amazon120 ctSports Research L-Theanine 200mg with Organic Coconut Oil | Suntheanine Supplement for Focus, Relaxation & Alertness | Double Strength, Non-GMO & Gluten Free
$35.47Buy
iHerb120 ctSports Research, L-Theanine, 200 mg, 120 Softgels
$38.97Buy
Amazon60 ctSports Research Double Strength L-Theanine Supplement - Suntheanine Softgels for Focus, Relaxation & Alertness - Non-Drowsy Support Made with Coconut Oil, Non-GMO & Gluten Free - 200mg, 60 Count
$19.95Buy
+1 more...
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#12
California Gold Nutrition, L-Theanine, Featuring AlphaWave®, 100 mg, 60 Veg Capsules
$1.57per gram
$9.43 / bottle
California Gold Nutrition, L-Theanine, Featuring AlphaWave®, 100 mg, 60 Veg Capsules
California Gold NutritioniHerbNew
Per Serving$0.16
Servings60
Formcapsule
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Save 26%
#13
Swanson, Suntheanine® L-Theanine, 200 mg, 60 Vegan Capsules
$1.92per gram
$23.09 / bottle
Swanson, Suntheanine® L-Theanine, 200 mg, 60 Vegan Capsules
SwansoniHerbNew
Per Serving$0.38
Servings60
Formcapsule
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#14
Swanson, Suntheanine® L-Theanine, 100 mg, 60 Veg Capsules
$2.60per gram
$15.59 / bottle
Swanson, Suntheanine® L-Theanine, 100 mg, 60 Veg Capsules
SwansoniHerbNew2 options
Per Serving$0.26
Servings60
Formcapsule
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iHerb60 ctSwanson, Suntheanine® L-Theanine, 100 mg, 60 Veg Capsules
$15.59Buy
60 ctSwanson, Suntheanine® L-Theanine, 100 mg, 200 mg
$15.59Buy