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Cheapest Phenylalanine on iHerb

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

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

The priciest option here costs about 2.7× more per 100 mg of Phenylalanine 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.
#ProductDoseServingsPrice (USD)Cost per 100 mg
1
NutriBiotic, Rice Protein Powder, Vanilla, 3 lb (1.36 kg)
NutriBiotic, Rice Protein Powder, Vanilla, 3 lb (1.36 kg)
NutriBiotic
640 mg9038.610.067View on iHerb →
2
NutriBiotic, Rice Protein Powder, Chocolate, 3 lb (1.36 kg)
NutriBiotic, Rice Protein Powder, Chocolate, 3 lb (1.36 kg)
NutriBiotic
589 mg8538.610.077View on iHerb →
3
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
2,500 mg1122.990.084View on iHerb →
4
Life Enhancement, Blast Caps™, 120 Vegetarian Capsules
Life Enhancement, Blast Caps™, 120 Vegetarian Capsules
Life Enhancement
600 mg6030.500.085View on iHerb →
5
PlantFusion, Complete Protein, Creamy Vanilla Bean, 5 lb (2.25 kg)
PlantFusion, Complete Protein, Creamy Vanilla Bean, 5 lb (2.25 kg)
PlantFusion
1,270 mg7597.480.102View on iHerb →
6
Snap Supplements, Plant Protein, Vegan Protein Powder, Chocolate, 939 g
Snap Supplements, Plant Protein, Vegan Protein Powder, Chocolate, 939 g
Snap Supplements
1,100 mg3033.960.103View on iHerb →
7
Snap Supplements, Plant Protein, Vegan Protein Powder, Banana, 853 g
Snap Supplements, Plant Protein, Vegan Protein Powder, Banana, 853 g
Snap Supplements
1,100 mg3033.960.103View on iHerb →
8
Snap Supplements, Plant Protein with Nitric Oxide Booster, Vanilla, 868 g
Snap Supplements, Plant Protein with Nitric Oxide Booster, Vanilla, 868 g
Snap Supplements
1,100 mg3033.960.103View on iHerb →
9
PB2 Foods, Performance, Peanut Protein with Madagascar Vanilla, 2 lb (907 g)
PB2 Foods, Performance, Peanut Protein with Madagascar Vanilla, 2 lb (907 g)
PB2 Foods
1,002 mg2024.990.125View on iHerb →
10
PlantFusion, Complete Protein, Rich Chocolate, 2 lb (900 g)
PlantFusion, Complete Protein, Rich Chocolate, 2 lb (900 g)
PlantFusion
1,270 mg3052.480.138View on iHerb →
11
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
786 mg7081.600.148View on iHerb →
12
BSN, AminoX, EAAs, Muscle Support & Recovery, Watermelon Smash, 13.2 oz (375 g)
BSN, AminoX, EAAs, Muscle Support & Recovery, Watermelon Smash, 13.2 oz (375 g)
BSN
600 mg2523.010.153View on iHerb →
13
BSN, AminoX®, EAAs, Strawberry Dragon Fruit, 13.2 oz (375 g)
BSN, AminoX®, EAAs, Strawberry Dragon Fruit, 13.2 oz (375 g)
BSN
600 mg2523.010.153View on iHerb →
14
Sunwarrior, Warrior Blend, Protein + Greens, Unflavored, 1.65 lb (750 g)
Sunwarrior, Warrior Blend, Protein + Greens, Unflavored, 1.65 lb (750 g)
Sunwarrior
1,030 mg3047.670.154View on iHerb →
15
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
810 mg7189.990.157View on iHerb →
16
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
810 mg7189.990.157View on iHerb →
17
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
800 mg7189.990.158View on iHerb →
18
Sunwarrior, Clear Protein Refresh, Raspberry, 14.8 oz (420 g)
Sunwarrior, Clear Protein Refresh, Raspberry, 14.8 oz (420 g)
Sunwarrior
700 mg3034.970.167View on iHerb →
19
MRM Nutrition, Egg White Protein, Chocolate, 12 oz (340 g)
MRM Nutrition, Egg White Protein, Chocolate, 12 oz (340 g)
MRM Nutrition
1,340 mg1022.490.168View on iHerb →
20
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
788 mg6889.950.168View on iHerb →
21
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
788 mg6889.950.168View on iHerb →
22
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
788 mg6889.950.168View on iHerb →
23
Sunwarrior, Warrior Blend, Protein, Chocolate Peanut Butter, 1.65 lb (750 g)
Sunwarrior, Warrior Blend, Protein, Chocolate Peanut Butter, 1.65 lb (750 g)
Sunwarrior
790 mg3040.470.171View on iHerb →
24
Sunwarrior, Clear Protein Refresh, Pineapple Coconut, 14.8 oz (420 g)
Sunwarrior, Clear Protein Refresh, Pineapple Coconut, 14.8 oz (420 g)
Sunwarrior
670 mg3034.970.174View on iHerb →
25
Further Food, Organic Plant-Based Protein + Mushrooms & Seaweed, Unflavored, 19.05 oz (540 g)
Further Food, Organic Plant-Based Protein + Mushrooms & Seaweed, Unflavored, 19.05 oz (540 g)
Further Food
1,030 mg2037.490.182View on iHerb →

How we rank Phenylalanine

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.