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Cheapest L-Lysine HCl on iHerb

Ranked by real cost per 1,000 mg of L-Lysine HCl — cheapest value first.

Prices updated Jul 25, 2026 · 25 products · Prices in USD

The priciest option here costs about 9.6× more per 1,000 mg of L-Lysine HCl than the best-value pick NOW Foods. For the same daily dose, choosing by cost per unit instead of sticker price can meaningfully cut your yearly spend.
#ProductDoseServingsPrice (USD)Cost per 1,000 mg
1
NOW Foods, L-Lysine Pure Powder, 1 lb (454 g)
NOW Foods, L-Lysine Pure Powder, 1 lb (454 g)
NOW Foods
435 mg82215.920.045View on iHerb →
2
Nature's Life, L-Lysine HCI Powder, 435 mg, 7 oz (200 g)
Nature's Life, L-Lysine HCI Powder, 435 mg, 7 oz (200 g)
Nature's Life
435 mg46010.990.055View on iHerb →
3
Amazing Nutrition, L-Lysine, 1,000 mg, 360 Tablets
Amazing Nutrition, L-Lysine, 1,000 mg, 360 Tablets
Amazing Nutrition
1,000 mg36019.980.056View on iHerb →
4
Amazing Nutrition, Amazing Formulas, L-Lysine, 1,000 mg, 180 Tablets
Amazing Nutrition, Amazing Formulas, L-Lysine, 1,000 mg, 180 Tablets
Amazing Nutrition
1,000 mg18013.190.073View on iHerb →
5
Nutricost, L-Lysine, 1,000 mg , 240 Tablets
Nutricost, L-Lysine, 1,000 mg , 240 Tablets
Nutricost
1,000 mg24019.950.083View on iHerb →
6
Nutricost, L-Lysine, 500 Capsules (500 mg per Capsule)
Nutricost, L-Lysine, 500 Capsules (500 mg per Capsule)
Nutricost
1,000 mg25021.950.088View on iHerb →
7
Carlson, L-Lysine Powder, 3.53 oz (100 g)
Carlson, L-Lysine Powder, 3.53 oz (100 g)
Carlson
960 mg838.420.106View on iHerb →
8
Nutricost, L-Lysine, 250 Capsules (500 mg per Capsule)
Nutricost, L-Lysine, 250 Capsules (500 mg per Capsule)
Nutricost
1,000 mg12514.950.120View on iHerb →
9
Nutricost, L-Lysine, 1,000 mg, 120 Tablets
Nutricost, L-Lysine, 1,000 mg, 120 Tablets
Nutricost
1,000 mg12014.950.125View on iHerb →
10
Nature's Truth, L-Lysine, 1,000 mg, 100 Coated Caplets
Nature's Truth, L-Lysine, 1,000 mg, 100 Coated Caplets
Nature's Truth
1,000 mg10012.730.127View on iHerb →
11
Life Extension, L-Lysine, 620 mg, 100 Vegetarian Capsules
Life Extension, L-Lysine, 620 mg, 100 Vegetarian Capsules
Life Extension
620 mg1009.000.145View on iHerb →
12
Nature's Truth, L-Lysine, 500 mg, 130 Coated Caplets
Nature's Truth, L-Lysine, 500 mg, 130 Coated Caplets
Nature's Truth
500 mg13010.100.155View on iHerb →
13
Nature's Craft, L-Lysine, 240 Tablets (500 mg per Tablet)
Nature's Craft, L-Lysine, 240 Tablets (500 mg per Tablet)
Nature's Craft
1,000 mg12019.990.167View on iHerb →
14
Quantum Health, L-Lysine, 500 mg, 100 Tablets
Quantum Health, L-Lysine, 500 mg, 100 Tablets
Quantum Health
500 mg1008.670.173View on iHerb →
15
Carlson, L-Lysine, 500 mg, 100 Capsules
Carlson, L-Lysine, 500 mg, 100 Capsules
Carlson
500 mg10010.630.213View on iHerb →
16
Nature's Craft, L-lysine, 100 Tablets (500 mg per Tablet)
Nature's Craft, L-lysine, 100 Tablets (500 mg per Tablet)
Nature's Craft
1,000 mg5010.980.220View on iHerb →
17
California Gold Nutrition, L-Lysine, 500 mg, 60 Veggie Capsules
California Gold Nutrition, L-Lysine, 500 mg, 60 Veggie Capsules
California Gold Nutrition
500 mg608.400.280View on iHerb →
18
ALLMAX, Essentials, EAA, 11.29 oz (320 g)
ALLMAX, Essentials, EAA, 11.29 oz (320 g)
ALLMAX
2,590 mg3022.190.286View on iHerb →
19
Country Life, L-Lysine, Advanced, 180 Vegan Capsules
Country Life, L-Lysine, Advanced, 180 Vegan Capsules
Country Life
1,500 mg6026.590.295View on iHerb →
20
Pure Encapsulations, L-Lysine, 270 Capsules (500 mg per Capsule)
Pure Encapsulations, L-Lysine, 270 Capsules (500 mg per Capsule)
Pure Encapsulations
500 mg27041.500.307View on iHerb →
21
Pure Encapsulations, L-Lysine, 90 Capsules (500 mg per Capsule)
Pure Encapsulations, L-Lysine, 90 Capsules (500 mg per Capsule)
Pure Encapsulations
500 mg9015.500.344View on iHerb →
22
EFX Sports, EAA, Georgia Peach, 7.51 oz (213 g)
EFX Sports, EAA, Georgia Peach, 7.51 oz (213 g)
EFX Sports
1,875 mg3021.990.391View on iHerb →
23
EFX Sports, EAA, Cherry Bomb, 7.51 oz (213 g)
EFX Sports, EAA, Cherry Bomb, 7.51 oz (213 g)
EFX Sports
1,875 mg3021.990.391View on iHerb →
24
Solaray, L-Lysine, 90 Tablets
Solaray, L-Lysine, 90 Tablets
Solaray
1,000 mg3012.390.413View on iHerb →
25
DaVinci Laboratories, L-Lysine Capsules, 90 Capsules (500 mg per Capsule)
DaVinci Laboratories, L-Lysine Capsules, 90 Capsules (500 mg per Capsule)
DaVinci Laboratories
500 mg9019.400.431View on iHerb →

How we rank L-Lysine HCl

Two supplements can list the same dose per serving yet cost very differently once you account for how many servings are in the bottle. We calculate the total nutrient in each container (dose per serving × servings per container), divide the current price by that total, and rank by the resulting cost per unit. Lower is better. Because prices are refreshed automatically, this ranking reflects today's iHerb pricing rather than a snapshot from months ago.

Cost per unit is a starting point, not the whole story — the ideal form, third-party testing, and other ingredients matter too. Always check the label and consult a healthcare professional before starting a supplement.

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Prices update automatically and may differ from iHerb at checkout. Rankings are based on cost per unit of the listed nutrient and are for informational purposes only — not medical advice. Links to iHerb are affiliate links.