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Compare supplement prices normalized to cost per gram of active ingredient. No health claims — just transparent pricing data.

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Search Supplements

21 products found

Package Size:All sizes21< 60160–12015120–2504250+1

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Supplement Type

Alpha GPCAshwagandhaB ComplexCalciumCollagenCoQ10CreatineImmune SupportInositolL-TheanineLion's ManeMagnesiumNadNmnNootropicsNrOmega-3ProbioticsProteinPterostilbeneResveratrolSpermidineSuperfoodsVitamin CVitamin DZinc

Retailer

AmazonBulkSupplementsiHerbSwanson Vitamins

Brand

21st CenturyABEALLMAXAdvanced ClinicalsAgeless Foundation Laboratories

Form

capsulecapsulesgummyliquidlozengepowdersoftgeltablet

Availability

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Save 98%
Best Deal
#1
BulkSupplements L-Theanine Capsules
$0.29per gram
$20.97 / bottle
BulkSupplements L-Theanine Capsules
BulkSupplementsBulkSupplements
Per Serving$0.06
Servings365
Formcapsule
Updated today
BBuyAffiliate link
Save 97%
#2
fitcode L-Theanine 200mg Capsules
$0.40per gram
$4.75 / bottle
fitcode L-Theanine 200mg Capsules
fitcode LAmazon
Per Serving$0.08
Servings60
Formcapsule
Updated just now
BuyAffiliate link
Save 97%
#3
Nutricost L-Theanine 200mg, 240 Capsules
$0.42per gram
$19.95 / bottle
Nutricost L-Theanine 200mg, 240 Capsules
NutricostiHerbNew2 options
Per Serving$0.08
Servings240
Formcapsule
Updated today
iBuyAffiliate link

All options (sorted by value):

i
iHerb240 ctNutricost L-Theanine 200mg, 240 Capsules
$19.95Buy
i
30 ctNutricost L-Theanine 200mg Capsules, 30 Count
$5.70Buy
Save 97%
#4
Nutricost L-Theanine 200 mg, 120 Capsules
$0.50per gram
$11.95 / bottle
Nutricost L-Theanine 200 mg, 120 Capsules
NutricostiHerbNew2 options
Per Serving$0.10
Servings120
Formcapsule
Updated today
iBuyAffiliate link

All options (sorted by value):

i
iHerb120 ctNutricost L-Theanine 200 mg, 120 Capsules
$11.95Buy
i
30 ctNutricost L-Theanine 200mg, 30 Count
$19.95Buy
Save 96%
#5
Primaforce L-Theanine 200mg, 120 Capsules
$0.52per gram
$12.50 / bottle
Primaforce L-Theanine 200mg, 120 Capsules
PrimaforceiHerbNew
Per Serving$0.10
Servings120
Formcapsule
Updated today
iBuyAffiliate link
Save 96%
#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
Updated today
iBuyAffiliate link
Save 96%
#7
Force Factor L-Theanine Extra Strength 200mg, 60 Vegetarian Capsules
$0.58per gram
$6.99 / bottle
Force Factor L-Theanine Extra Strength 200mg, 60 Vegetarian Capsules
Force FactoriHerbNew2 options
Per Serving$0.12
Servings60
Formcapsule
Updated today
iBuyAffiliate link

All options (sorted by value):

i
iHerb60 ctForce Factor L-Theanine Extra Strength 200mg, 60 Vegetarian Capsules
$6.99Buy
i
60 ctForce Factor Magnesium + L-Theanine Vegetable Capsules, 120 Count
$19.97Buy
Save 95%
#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
Updated today
iBuyAffiliate link
Save 95%
#9
Nature's Truth L Theanine 200mg, 60 Capsules
$0.75per gram
$8.99 / bottle
Nature's Truth L Theanine 200mg, 60 Capsules
Nature's TruthAmazon3 options · 2 retailers
Per Serving$0.15
Servings60
Formcapsule
Updated today
BuyAffiliate link

All options (sorted by value):

Amazon60 ctNature's Truth L Theanine 200mg, 60 Capsules
$8.99Buy
i
iHerb60 ctNature's Truth L-Theanine 200 mg, 60 Capsules
$9.08Buy
Amazon30 ctNature's Truth KSM-66 Ashwagandha with L-Theanine, 60 Caplets
Buy
Save 95%
#10
California Gold Nutrition L-Theanine, 100 mg, 60 Count
$0.75per gram
$4.50 / bottle
California Gold Nutrition L-Theanine, 100 mg, 60 Count
California Gold NutritioniHerbNew2 options · 2 retailers
Per Serving$0.07
Servings60
Formcapsule
Updated today
iBuyAffiliate link

All options (sorted by value):

i
iHerb60 ctCalifornia Gold Nutrition L-Theanine, 100 mg, 60 Count
$4.50Buy
Amazon60 ctCalifornia Gold Nutrition L-Theanine, 100 mg, 60 Veggie Capsules
$9.99Buy
Save 93%
#11
NOW Foods L-Theanine 200 mg with Inositol Veg Capsules, 120 Count
$0.96per gram
$22.93 / bottle
NOW Foods L-Theanine 200 mg with Inositol Veg Capsules, 120 Count
NOW FoodsAmazon2 options
Per Serving$0.19
Servings120
Formcapsule
Updated just now
BuyAffiliate link

All options (sorted by value):

Amazon120 ctNOW Foods L-Theanine 200 mg with Inositol Veg Capsules, 120 Count
$22.93Buy
NOW Foods L-Theanine 200 mg with Inositol Veg Capsules, 60 Count
Buy
Save 90%
#12
NOW Foods L-Theanine 100 mg with Decaf Green Tea Veg Capsules, 90 Count
$1.41per gram
$12.70 / bottle
NOW Foods L-Theanine 100 mg with Decaf Green Tea Veg Capsules, 90 Count
NOW FoodsAmazon2 options
Per Serving$0.14
Servings90
Formcapsule
Updated today
BuyAffiliate link

All options (sorted by value):

Amazon90 ctNOW Foods L-Theanine 100 mg with Decaf Green Tea Veg Capsules, 90 Count
$12.70Buy
90 ctNOW Foods L-Theanine 100 mg with Decaf Green Tea Veg Capsules, 90 Count
$23.89Buy
Save 89%
#13
California Gold Nutrition L-Theanine 100 mg, 60 Veg Capsules
$1.57per gram
$9.43 / bottle
California Gold Nutrition L-Theanine 100 mg, 60 Veg Capsules
California Gold NutritioniHerbNew
Per Serving$0.16
Servings60
Formcapsule
Updated today
iBuyAffiliate link
Save 88%
#14
Doctor's BEST L-Theanine, 150 mg, 90 Count
$1.70per gram
$22.99 / bottle
Doctor's BEST L-Theanine, 150 mg, 90 Count
Doctor's BestAmazon
Per Serving$0.26
Servings90
Formcapsule
Updated today
BuyAffiliate link
Save 87%
#15
Swanson Suntheanine L-Theanine 200 mg, 60 Capsules
$1.92per gram
$23.09 / bottle
Swanson Suntheanine L-Theanine 200 mg, 60 Capsules
SwansoniHerbNew2 options
Per Serving$0.38
Servings60
Formcapsule
Updated today
iBuyAffiliate link

All options (sorted by value):

i
iHerb60 ctSwanson Suntheanine L-Theanine 200 mg, 60 Capsules
$23.09Buy
i
60 ctSwanson Suntheanine L-Theanine 200 mg, 60 Vegan Capsules
$23.09Buy
Save 82%
#16
Swanson Suntheanine L-Theanine 100 mg, 200 Count
$2.60per gram
$15.59 / bottle
Swanson Suntheanine L-Theanine 100 mg, 200 Count
SwansoniHerbNew2 options
Per Serving$0.26
Servings60
Formcapsule
Updated today
iBuyAffiliate link

All options (sorted by value):

i
iHerb60 ctSwanson Suntheanine L-Theanine 100 mg, 200 Count
$15.59Buy
i
60 ctSwanson Suntheanine L-Theanine 100 mg, 60 Veg Capsules
$15.59Buy
Save 80%
#17
Evlution Nutrition Magnesium + L-Theanine Veggie Capsules, 90 Count
$2.89per gram
$12.99 / bottle
Evlution Nutrition Magnesium + L-Theanine Veggie Capsules, 90 Count
EVLutionAmazon
Per Serving$0.29
Servings45
Formcapsule
Updated today
BuyAffiliate link
Save 78%
#18
California Gold Nutrition L-Theanine AlphaWave 100 mg, 30 Veggie Capsules
$3.17per gram
$9.50 / bottle
California Gold Nutrition L-Theanine AlphaWave 100 mg, 30 Veggie Capsules
California Gold NutritionAmazon
Per Serving$0.32
Servings30
Formcapsule
Updated just now
BuyAffiliate link
Save 69%
#19
Sports Research Sleep Complex Capsules, 30 Servings
$4.49per gram
$26.95 / bottle
Sports Research Sleep Complex Capsules, 30 Servings
Sports ResearchAmazon2 options
Per Serving$0.90
Servings30
Formcapsule
Updated just now
BuyAffiliate link

All options (sorted by value):

Amazon30 ctSports Research Sleep Complex Capsules, 30 Servings
$26.95Buy
30 ctSports Research Sleep Complex with Melatonin 5mg, L-Theanine 200mg & Magnesium, 60 Veggie Capsules
$27.95Buy
Save 63%
#20
Doctors Best Womens Beauty Sleep with Magnesium, Theanine, Melatonin, 60 Veggie Caps
$5.42per gram
$16.25 / bottle
Doctors Best Womens Beauty Sleep with Magnesium, Theanine, Melatonin, 60 Veggie Caps
Doctor's BestAmazon
Per Serving$0.54
Servings30
Formcapsule
Updated just now
BuyAffiliate link
12
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