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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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117 products found

Form:All forms117Capsule116Powder1
Package Size:All sizes108< 60860–12050120–25040250+10

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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 95%
#81
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 yesterday
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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%
#82
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
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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 95%
#83
NOW Foods Magnesium Citrate 400mg, 120 Veg Capsules
$0.78per gram
$24.95 / bottle
NOW Foods Magnesium Citrate 400mg, 120 Veg Capsules
NOW FoodsAmazon
Per Serving$0.31
Servings80
Formcapsule
Updated just now
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Save 95%
#84
Host Defense Mushrooms Lion's Mane Capsules, 120 Count
$0.79per gram
$47.21 / bottle
Host Defense Mushrooms Lion's Mane Capsules, 120 Count
Host Defense Mushrooms Lion's ManeAmazon3 options
Per Serving$0.79
Servings60
Formcapsule
Updated yesterday
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Amazon60 ctHost Defense Mushrooms Lion's Mane Capsules, 120 Count
$47.21Buy
30 ctHost Defense Lion's Mane Mushroom Capsules, 60 Count
$25.46Buy
15 ctHost Defense Mushrooms Lion's Mane Capsules, 30 Count
$15.71Buy
Save 99%
#85
BioSchwartz 13-in-1 Mushroom Complex Capsules, 90 Count
$0.83per gram
$14.97 / bottle
BioSchwartz 13-in-1 Mushroom Complex Capsules, 90 Count
BioSchwartz 13-in-1Amazon
Per Serving$0.33
Servings45
Formcapsule
Updated today
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Save 94%
#86
BulkSupplements Magnesium Malate Capsules, 240 Count
$0.83per gram
$19.97 / bottle
BulkSupplements Magnesium Malate Capsules, 240 Count
BulkSupplementsAmazon2 options · 2 retailers
Per Serving$0.33
Servings60
Formcapsule
Updated yesterday
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Amazon60 ctBulkSupplements Magnesium Malate Capsules, 240 Count
$19.97Buy
B
BulkSupplements60 ctBulkSupplements Magnesium Malate Capsules
$19.97Buy
Save 94%
#87
NOW Foods Magnesium Transporters with 5 Forms of Magnesium, 180 Veg Capsules
$0.91per gram
$19.59 / bottle
NOW Foods Magnesium Transporters with 5 Forms of Magnesium, 180 Veg Capsules
NOW FoodsAmazon
Per Serving$0.11
Servings180
Formcapsule
Updated yesterday
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Save 94%
#88
BulkSupplements Magnesium Glycinate Capsules, 240 Count
$0.92per gram
$21.97 / bottle
BulkSupplements Magnesium Glycinate Capsules, 240 Count
BulkSupplementsAmazon4 options · 2 retailers
Per Serving$0.37
Servings60
Formcapsule
Updated just now
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Different serving sizes — compare by $/gram for accuracy

Amazon60 ctBulkSupplements Magnesium Glycinate Capsules, 240 Count
$21.97Buy
120 ctBulkSupplements Magnesium Glycinate Capsules, 240 Count
$21.97Buy
B
BulkSupplements60 ctBulkSupplements Magnesium Glycinate Capsules
$21.97Buy
+1 more...
Save 94%
#89
Evlution Organic Mushroom Supplement Capsules, 30 Servings
$0.93per gram
$13.99 / bottle
Evlution Organic Mushroom Supplement Capsules, 30 Servings
EVLutionAmazon
Per Serving$0.47
Servings30
Formcapsule
Updated yesterday
BuyAffiliate link
Save 93%
#90
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 today
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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 92%
#91
DR. EMIL NUTRITION Organic Lion's Mane Supplement Capsules with Chaga, Reishi & Maitake, 9000mg
$1.10per gram
$33.04 / bottle
DR. EMIL NUTRITION Organic Lion's Mane Supplement Capsules with Chaga, Reishi & Maitake, 9000mg
Dr. EmilAmazon
Per Serving$1.10
Servings30
Formcapsule
Updated yesterday
BuyAffiliate link
Save 92%
#92
Source Naturals Serene Science Magnesium Serene, 5 Ounces
$1.10per gram
$22.39 / bottle
Source Naturals Serene Science Magnesium Serene, 5 Ounces
Source NaturalsAmazon
Per Serving$0.09
Servings240
Formcapsule
Updated today
BuyAffiliate link
Save 92%
#93
21st Century Magnesium Glycinate 200 mg Capsules, 90 Count
$1.22per gram
$10.99 / bottle
21st Century Magnesium Glycinate 200 mg Capsules, 90 Count
21st CenturyAmazon
Per Serving$0.24
Servings45
Formcapsule
Updated just now
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Save 91%
#94
Bluebonnet Nutrition Buffered Chelated Magnesium, 120 Veg Capsules
$1.36per gram
$32.76 / bottle
Bluebonnet Nutrition Buffered Chelated Magnesium, 120 Veg Capsules
BluebonnetiHerbNew3 options · 2 retailers
Per Serving$0.27
Servings120
Formcapsule
Updated today
iBuyAffiliate link

All options (sorted by value):

i
iHerb120 ctBluebonnet Nutrition Buffered Chelated Magnesium, 120 Veg Capsules
$32.76Buy
Amazon60 ctBlueBonnet Nutrition Albion Chelated Magnesium Vegetable Capsules, 200 mg, 120 Count
$23.60Buy
i
iHerb30 ctBluebonnet Nutrition Chelated Magnesium 100mg Capsules, 120 Count
$13.56Buy
Save 90%
#95
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 just now
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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 90%
#96
Swanson ULT Albion DIMAGNESIUM Malate 2.1 OZ
$1.43per gram
$17.19 / bottle
Swanson ULT Albion DIMAGNESIUM Malate 2.1 OZ
SwansonAmazon
Per Serving$0.57
Servings30
Formcapsule
Updated today
BuyAffiliate link
Save 88%
#97
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 86%
#98
BlueBonnet Nutrition Magnesium Glycinate 400mg Veggie Capsules, 120 Count
$2.00per gram
$23.96 / bottle
BlueBonnet Nutrition Magnesium Glycinate 400mg Veggie Capsules, 120 Count
BluebonnetAmazon
Per Serving$0.80
Servings30
Formcapsule
Updated just now
BuyAffiliate link
Save 84%
#99
Swanson Magnesium Lysinate Glycinate Chelated
$2.38per gram
$14.99 / bottle
Swanson Magnesium Lysinate Glycinate Chelated
Doctor's BestSwanson VitaminsNew3 options · 3 retailers
Per Serving$0.25
Servings60
Formcapsule
Updated today
SBuyAffiliate link

All options (sorted by value):

S
Swanson Vitamins60 ctSwanson Magnesium Lysinate Glycinate Chelated
$14.99Buy
Amazon60 ctDoctor's BEST High Absorption Magnesium Glycinate Lysinate Capsules, 120 Veg Caps
$15.97Buy
i
iHerb60 ctDoctor's Best High Absorption Magnesium, 120 Veggie Caps
$14.99Buy
Save 83%
#100
Nordic Naturals Magnesium Glycinate Capsules, 90 Count
$2.49per gram
$18.66 / bottle
Nordic Naturals Magnesium Glycinate Capsules, 90 Count
Nordic NaturalsAmazon
Per Serving$0.62
Servings30
Formcapsule
Updated today
BuyAffiliate link
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