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Cheapest Lysine on iHerb

Ranked by real cost per 100 mg of Lysine — cheapest value first.

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

The priciest option here costs about 4.0× more per 100 mg of Lysine than the best-value pick Designer Wellness. For the same daily dose, choosing by cost per unit instead of sticker price can meaningfully cut your yearly spend.
#ProductDoseServingsPrice (USD)Cost per 100 mg
1
Designer Wellness, Designer Whey, Natural 100% Whey Protein Powder, Gourmet Chocolate, 12 oz (340 g)
Designer Wellness, Designer Whey, Natural 100% Whey Protein Powder, Gourmet Chocolate, 12 oz (340 g)
Designer Wellness
9,667 mg1122.990.022View on iHerb →
2
BPI Sports, ISO HD™, 100% Pure Isolate Protein, Vanilla Cookie, 4.8 lbs (2,170 g)
BPI Sports, ISO HD™, 100% Pure Isolate Protein, Vanilla Cookie, 4.8 lbs (2,170 g)
BPI Sports
2,379 mg7081.600.049View on iHerb →
3
BPI Sports, Hydro HD™, Hydrolyzed Whey Protein, Vanilla Ice Cream, 4.8 lbs (2,176 g)
BPI Sports, Hydro HD™, Hydrolyzed Whey Protein, Vanilla Ice Cream, 4.8 lbs (2,176 g)
BPI Sports
2,354 mg6889.950.056View on iHerb →
4
BPI Sports, Hydro HD™, Hydrolyzed Whey Protein, Cinnamon Cereal, 4.8 lbs (2,176 g)
BPI Sports, Hydro HD™, Hydrolyzed Whey Protein, Cinnamon Cereal, 4.8 lbs (2,176 g)
BPI Sports
2,354 mg6889.950.056View on iHerb →
5
BPI Sports, Hydro HD™, Hydrolyzed Whey Protein, Fruity Loopers, 4.8 lbs (2,176 g)
BPI Sports, Hydro HD™, Hydrolyzed Whey Protein, Fruity Loopers, 4.8 lbs (2,176 g)
BPI Sports
2,354 mg6889.950.056View on iHerb →
6
Levels, Grass Fed Whey Protein Powder, Vanilla Cinnamon, 5 lb (2.27 kg)
Levels, Grass Fed Whey Protein Powder, Vanilla Cinnamon, 5 lb (2.27 kg)
Levels
2,140 mg7189.990.059View on iHerb →
7
Levels, Grass Fed Whey Protein Powder, Cappuccino, 5 lb (2.27 kg)
Levels, Grass Fed Whey Protein Powder, Cappuccino, 5 lb (2.27 kg)
Levels
2,110 mg7189.990.060View on iHerb →
8
Levels, Grass Fed Whey Protein Powder, Double Chocolate, 5 lbs (2.27 kg)
Levels, Grass Fed Whey Protein Powder, Double Chocolate, 5 lbs (2.27 kg)
Levels
2,090 mg7189.990.061View on iHerb →
9
EHPlabs, OxyWhey, Lean Wellness Protein, Choc Caramel, 2.03 lb (922 g)
EHPlabs, OxyWhey, Lean Wellness Protein, Choc Caramel, 2.03 lb (922 g)
EHPlabs
2,593 mg2744.950.064View on iHerb →
10
Metabolic Nutrition, Protizyme, Specialized Designed Protein, Strawberry Creme, 4 lb (1,820 g)
Metabolic Nutrition, Protizyme, Specialized Designed Protein, Strawberry Creme, 4 lb (1,820 g)
Metabolic Nutrition
2,406 mg5289.990.072View on iHerb →
11
Levels, Grass Fed Whey Protein Powder, Vanilla Bean, 2 lb (907 g)
Levels, Grass Fed Whey Protein Powder, Vanilla Bean, 2 lb (907 g)
Levels
2,160 mg2844.990.074View on iHerb →
12
Levels, Grass Fed Whey Protein Powder, Vanilla Cinnamon, 2 lb (907 g)
Levels, Grass Fed Whey Protein Powder, Vanilla Cinnamon, 2 lb (907 g)
Levels
2,140 mg2844.990.075View on iHerb →
13
PlantFusion, Complete Protein, Creamy Vanilla Bean, 5 lb (2.25 kg)
PlantFusion, Complete Protein, Creamy Vanilla Bean, 5 lb (2.25 kg)
PlantFusion
1,710 mg7597.480.076View on iHerb →
14
BodyTech, Whey Protein Isolate, Rich Chocolate, 5 lbs (2.27 kg)
BodyTech, Whey Protein Isolate, Rich Chocolate, 5 lbs (2.27 kg)
BodyTech
2,140 mg71118.240.078View on iHerb →
15
Metabolic Nutrition, Protizyme, Specialized Designed Protein, Peanut Butter Cookie, 2 lb (910 g)
Metabolic Nutrition, Protizyme, Specialized Designed Protein, Peanut Butter Cookie, 2 lb (910 g)
Metabolic Nutrition
2,406 mg2649.990.080View on iHerb →
16
Metabolic Nutrition, Protizyme, Specialized Designed Protein, Banana Creme, 2 lb (910 g)
Metabolic Nutrition, Protizyme, Specialized Designed Protein, Banana Creme, 2 lb (910 g)
Metabolic Nutrition
2,406 mg2649.990.080View on iHerb →
17
Metabolic Nutrition, Protizyme, Specialized Designed Protein, Strawberry Creme, 2 lb (910 g)
Metabolic Nutrition, Protizyme, Specialized Designed Protein, Strawberry Creme, 2 lb (910 g)
Metabolic Nutrition
2,406 mg2649.990.080View on iHerb →
18
BPI Sports, Hydro HD™, Hydrolyzed Whey Protein, Cinnamon Cereal, 1.62 lbs (736 g)
BPI Sports, Hydro HD™, Hydrolyzed Whey Protein, Cinnamon Cereal, 1.62 lbs (736 g)
BPI Sports
2,354 mg2344.950.083View on iHerb →
19
BPI Sports, Hydro HD™, Hydrolyzed Whey Protein, Vanilla Ice Cream, 1.62 lbs (736 g)
BPI Sports, Hydro HD™, Hydrolyzed Whey Protein, Vanilla Ice Cream, 1.62 lbs (736 g)
BPI Sports
2,354 mg2344.950.083View on iHerb →
20
BPI Sports, Hydro HD™, Hydrolyzed Whey Protein, Chocolate Lava Cake, 1.62 lbs (736 g)
BPI Sports, Hydro HD™, Hydrolyzed Whey Protein, Chocolate Lava Cake, 1.62 lbs (736 g)
BPI Sports
2,354 mg2344.950.083View on iHerb →
21
BPI Sports, Hydro HD™, Hydrolyzed Whey Protein, Fruity Loopers, 1.62 lbs (736 g)
BPI Sports, Hydro HD™, Hydrolyzed Whey Protein, Fruity Loopers, 1.62 lbs (736 g)
BPI Sports
2,354 mg2344.950.083View on iHerb →
22
Snap Supplements, Plant Protein, Vegan Protein Powder, Chocolate, 939 g
Snap Supplements, Plant Protein, Vegan Protein Powder, Chocolate, 939 g
Snap Supplements
1,342 mg3033.960.084View on iHerb →
23
Snap Supplements, Plant Protein, Vegan Protein Powder, Banana, 853 g
Snap Supplements, Plant Protein, Vegan Protein Powder, Banana, 853 g
Snap Supplements
1,342 mg3033.960.084View on iHerb →
24
Snap Supplements, Plant Protein with Nitric Oxide Booster, Vanilla, 868 g
Snap Supplements, Plant Protein with Nitric Oxide Booster, Vanilla, 868 g
Snap Supplements
1,342 mg3033.960.084View on iHerb →
25
Levels, Grass Fed Whey Protein Powder, Chocolate Peanut Butter, 2 lb (907 g)
Levels, Grass Fed Whey Protein Powder, Chocolate Peanut Butter, 2 lb (907 g)
Levels
2,010 mg2644.990.086View on iHerb →

How we rank Lysine

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.