Cheapest Cystine on iHerb

Ranked by real cost per 10 mg of Cystine — cheapest value first.

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

The priciest option here costs about 5.0× more per 10 mg of Cystine than the best-value pick NutriBiotic. For the same daily dose, choosing by cost per unit instead of sticker price can meaningfully cut your yearly spend.

#	Product	Dose	Servings	Price (USD)	Cost per 10 mg
1	NutriBiotic, Rice Protein Powder, Vanilla, 3 lb (1.36 kg) NutriBiotic	262 mg	90	38.61	0.016	View on iHerb →
2	NutriBiotic, Rice Protein Powder, Chocolate, 3 lb (1.36 kg) NutriBiotic	241 mg	85	38.61	0.019	View on iHerb →
3	BPI Sports, ISO HD™, 100% Pure Isolate Protein, Vanilla Cookie, 4.8 lbs (2,170 g) BPI Sports	527 mg	70	81.60	0.022	View on iHerb →
4	EHPlabs, OxyWhey, Lean Wellness Protein, Choc Caramel, 2.03 lb (922 g) EHPlabs	702 mg	27	44.95	0.024	View on iHerb →
5	BPI Sports, Hydro HD™, Hydrolyzed Whey Protein, Vanilla Ice Cream, 4.8 lbs (2,176 g) BPI Sports	523 mg	68	89.95	0.025	View on iHerb →
6	BPI Sports, Hydro HD™, Hydrolyzed Whey Protein, Cinnamon Cereal, 4.8 lbs (2,176 g) BPI Sports	523 mg	68	89.95	0.025	View on iHerb →
7	BPI Sports, Hydro HD™, Hydrolyzed Whey Protein, Fruity Loopers, 4.8 lbs (2,176 g) BPI Sports	523 mg	68	89.95	0.025	View on iHerb →
8	Levels, Grass Fed Whey Protein Powder, Vanilla Cinnamon, 5 lb (2.27 kg) Levels	500 mg	71	89.99	0.025	View on iHerb →
9	Levels, Grass Fed Whey Protein Powder, Double Chocolate, 5 lbs (2.27 kg) Levels	490 mg	71	89.99	0.026	View on iHerb →
10	Levels, Grass Fed Whey Protein Powder, Cappuccino, 5 lb (2.27 kg) Levels	480 mg	71	89.99	0.026	View on iHerb →
11	Levels, Grass Fed Whey Protein Powder, Vanilla Cinnamon, 2 lb (907 g) Levels	500 mg	28	44.99	0.032	View on iHerb →
12	BodyTech, Whey Protein Isolate, Rich Chocolate, 5 lbs (2.27 kg) BodyTech	510 mg	71	118.24	0.033	View on iHerb →
13	Levels, Grass Fed Whey Protein Powder, Vanilla Bean, 2 lb (907 g) Levels	490 mg	28	44.99	0.033	View on iHerb →
14	Levels, Grass Fed Whey Protein Powder, Chocolate Peanut Butter, 2 lb (907 g) Levels	480 mg	26	44.99	0.036	View on iHerb →
15	BPI Sports, Hydro HD™, Hydrolyzed Whey Protein, Cinnamon Cereal, 1.62 lbs (736 g) BPI Sports	523 mg	23	44.95	0.037	View on iHerb →
16	BPI Sports, Hydro HD™, Hydrolyzed Whey Protein, Vanilla Ice Cream, 1.62 lbs (736 g) BPI Sports	523 mg	23	44.95	0.037	View on iHerb →
17	BPI Sports, Hydro HD™, Hydrolyzed Whey Protein, Chocolate Lava Cake, 1.62 lbs (736 g) BPI Sports	523 mg	23	44.95	0.037	View on iHerb →
18	BPI Sports, Hydro HD™, Hydrolyzed Whey Protein, Fruity Loopers, 1.62 lbs (736 g) BPI Sports	523 mg	23	44.95	0.037	View on iHerb →
19	Paradise Herbs, Whey Protein, Natural Vanilla, 32 oz (990 g) Paradise Herbs	423 mg	30	49.99	0.039	View on iHerb →
20	Paradise Herbs, Whey Protein, Natural Chocolate, 32 oz (990 g) Paradise Herbs	423 mg	30	49.99	0.039	View on iHerb →
21	Sunwarrior, Warrior Blend, Protein + Greens, Unflavored, 1.65 lb (750 g) Sunwarrior	390 mg	30	47.67	0.041	View on iHerb →
22	Sunwarrior, Clear Protein Refresh, Raspberry, 14.8 oz (420 g) Sunwarrior	240 mg	30	34.97	0.049	View on iHerb →
23	Sunwarrior, Clear Protein Refresh, Pineapple Coconut, 14.8 oz (420 g) Sunwarrior	230 mg	30	34.97	0.051	View on iHerb →
24	Sunwarrior, Warrior Blend, Protein, Chocolate Peanut Butter, 1.65 lb (750 g) Sunwarrior	260 mg	30	40.47	0.052	View on iHerb →
25	Further Food, Organic Plant-Based Protein + Mushrooms & Seaweed, Unflavored, 19.05 oz (540 g) Further Food	230 mg	20	37.49	0.082	View on iHerb →

1
NutriBiotic, Rice Protein Powder, Vanilla, 3 lb (1.36 kg)
NutriBiotic
Cost per 10 mg 0.016
Dose
262 mg
Servings
90
Price (USD)
38.61
View on iHerb →
2
NutriBiotic, Rice Protein Powder, Chocolate, 3 lb (1.36 kg)
NutriBiotic
Cost per 10 mg 0.019
Dose
241 mg
Servings
85
Price (USD)
38.61
View on iHerb →
3
BPI Sports, ISO HD™, 100% Pure Isolate Protein, Vanilla Cookie, 4.8 lbs (2,170 g)
BPI Sports
Cost per 10 mg 0.022
Dose
527 mg
Servings
70
Price (USD)
81.60
View on iHerb →
4
EHPlabs, OxyWhey, Lean Wellness Protein, Choc Caramel, 2.03 lb (922 g)
EHPlabs
Cost per 10 mg 0.024
Dose
702 mg
Servings
27
Price (USD)
44.95
View on iHerb →
5
BPI Sports, Hydro HD™, Hydrolyzed Whey Protein, Vanilla Ice Cream, 4.8 lbs (2,176 g)
BPI Sports
Cost per 10 mg 0.025
Dose
523 mg
Servings
68
Price (USD)
89.95
View on iHerb →
6
BPI Sports, Hydro HD™, Hydrolyzed Whey Protein, Cinnamon Cereal, 4.8 lbs (2,176 g)
BPI Sports
Cost per 10 mg 0.025
Dose
523 mg
Servings
68
Price (USD)
89.95
View on iHerb →
7
BPI Sports, Hydro HD™, Hydrolyzed Whey Protein, Fruity Loopers, 4.8 lbs (2,176 g)
BPI Sports
Cost per 10 mg 0.025
Dose
523 mg
Servings
68
Price (USD)
89.95
View on iHerb →
8
Levels, Grass Fed Whey Protein Powder, Vanilla Cinnamon, 5 lb (2.27 kg)
Levels
Cost per 10 mg 0.025
Dose
500 mg
Servings
71
Price (USD)
89.99
View on iHerb →
9
Levels, Grass Fed Whey Protein Powder, Double Chocolate, 5 lbs (2.27 kg)
Levels
Cost per 10 mg 0.026
Dose
490 mg
Servings
71
Price (USD)
89.99
View on iHerb →
10
Levels, Grass Fed Whey Protein Powder, Cappuccino, 5 lb (2.27 kg)
Levels
Cost per 10 mg 0.026
Dose
480 mg
Servings
71
Price (USD)
89.99
View on iHerb →
11
Levels, Grass Fed Whey Protein Powder, Vanilla Cinnamon, 2 lb (907 g)
Levels
Cost per 10 mg 0.032
Dose
500 mg
Servings
28
Price (USD)
44.99
View on iHerb →
12
BodyTech, Whey Protein Isolate, Rich Chocolate, 5 lbs (2.27 kg)
BodyTech
Cost per 10 mg 0.033
Dose
510 mg
Servings
71
Price (USD)
118.24
View on iHerb →
13
Levels, Grass Fed Whey Protein Powder, Vanilla Bean, 2 lb (907 g)
Levels
Cost per 10 mg 0.033
Dose
490 mg
Servings
28
Price (USD)
44.99
View on iHerb →
14
Levels, Grass Fed Whey Protein Powder, Chocolate Peanut Butter, 2 lb (907 g)
Levels
Cost per 10 mg 0.036
Dose
480 mg
Servings
26
Price (USD)
44.99
View on iHerb →
15
BPI Sports, Hydro HD™, Hydrolyzed Whey Protein, Cinnamon Cereal, 1.62 lbs (736 g)
BPI Sports
Cost per 10 mg 0.037
Dose
523 mg
Servings
23
Price (USD)
44.95
View on iHerb →
16
BPI Sports, Hydro HD™, Hydrolyzed Whey Protein, Vanilla Ice Cream, 1.62 lbs (736 g)
BPI Sports
Cost per 10 mg 0.037
Dose
523 mg
Servings
23
Price (USD)
44.95
View on iHerb →
17
BPI Sports, Hydro HD™, Hydrolyzed Whey Protein, Chocolate Lava Cake, 1.62 lbs (736 g)
BPI Sports
Cost per 10 mg 0.037
Dose
523 mg
Servings
23
Price (USD)
44.95
View on iHerb →
18
BPI Sports, Hydro HD™, Hydrolyzed Whey Protein, Fruity Loopers, 1.62 lbs (736 g)
BPI Sports
Cost per 10 mg 0.037
Dose
523 mg
Servings
23
Price (USD)
44.95
View on iHerb →
19
Paradise Herbs, Whey Protein, Natural Vanilla, 32 oz (990 g)
Paradise Herbs
Cost per 10 mg 0.039
Dose
423 mg
Servings
30
Price (USD)
49.99
View on iHerb →
20
Paradise Herbs, Whey Protein, Natural Chocolate, 32 oz (990 g)
Paradise Herbs
Cost per 10 mg 0.039
Dose
423 mg
Servings
30
Price (USD)
49.99
View on iHerb →
21
Sunwarrior, Warrior Blend, Protein + Greens, Unflavored, 1.65 lb (750 g)
Sunwarrior
Cost per 10 mg 0.041
Dose
390 mg
Servings
30
Price (USD)
47.67
View on iHerb →
22
Sunwarrior, Clear Protein Refresh, Raspberry, 14.8 oz (420 g)
Sunwarrior
Cost per 10 mg 0.049
Dose
240 mg
Servings
30
Price (USD)
34.97
View on iHerb →
23
Sunwarrior, Clear Protein Refresh, Pineapple Coconut, 14.8 oz (420 g)
Sunwarrior
Cost per 10 mg 0.051
Dose
230 mg
Servings
30
Price (USD)
34.97
View on iHerb →
24
Sunwarrior, Warrior Blend, Protein, Chocolate Peanut Butter, 1.65 lb (750 g)
Sunwarrior
Cost per 10 mg 0.052
Dose
260 mg
Servings
30
Price (USD)
40.47
View on iHerb →
25
Further Food, Organic Plant-Based Protein + Mushrooms & Seaweed, Unflavored, 19.05 oz (540 g)
Further Food
Cost per 10 mg 0.082
Dose
230 mg
Servings
20
Price (USD)
37.49
View on iHerb →

How we rank Cystine

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.

Cheapest Cystine on iHerb

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