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Cheapest L-Phenylalanine on iHerb

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

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

The priciest option here costs about 13.5× more per 100 mg of L-Phenylalanine than the best-value pick Nutricost. 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
Nutricost, L-Phenylalanine, 500 mg, 180 Capsules
Nutricost, L-Phenylalanine, 500 mg, 180 Capsules
Nutricost
500 mg18012.950.014View on iHerb →
2
Super Nutrition, Simply One®, Men's 50+ Multivitamin with Super Adaptogens, B12, Greens, Spices & Antioxidants, 90 Tablets
Super Nutrition, Simply One®, Men's 50+ Multivitamin with Super Adaptogens, B12, Greens, Spices & Antioxidants, 90 Tablets
Super Nutrition
100 mg902.000.022View on iHerb →
3
NOW Foods, Sports, Amino-9 Essentials™ Powder, 11.64 oz (330 g)
NOW Foods, Sports, Amino-9 Essentials™ Powder, 11.64 oz (330 g)
NOW Foods
751 mg5928.170.064View on iHerb →
4
NOW Foods, True Focus, 90 Veg Capsules
NOW Foods, True Focus, 90 Veg Capsules
NOW Foods
300 mg4513.460.100View on iHerb →
5
Super Nutrition, SimplyOne®, Think Clearly with L-Theanine, L-Phenylalanine, and L-Glutamine, 30 Tablets
Super Nutrition, SimplyOne®, Think Clearly with L-Theanine, L-Phenylalanine, and L-Glutamine, 30 Tablets
Super Nutrition
200 mg306.550.109View on iHerb →
6
Rule One Proteins, Essential Amino 9, Cherry Limeade, 12.17 oz (345 g)
Rule One Proteins, Essential Amino 9, Cherry Limeade, 12.17 oz (345 g)
Rule One Proteins
450 mg3015.490.115View on iHerb →
7
RYSE, BCAA/EAA, Cherry Limeade, 13.1 oz (372 g)
RYSE, BCAA/EAA, Cherry Limeade, 13.1 oz (372 g)
RYSE
1,000 mg3034.990.117View on iHerb →
8
MusclePharm, Pro Series, Endura-Drive™, Cherry Limeade, 1.6 lbs (711 g)
MusclePharm, Pro Series, Endura-Drive™, Cherry Limeade, 1.6 lbs (711 g)
MusclePharm
900 mg3039.990.148View on iHerb →
9
MusclePharm, Pro Series, Endura-Drive™, Strawberry Watermelon, 1.6 lbs (720 g)
MusclePharm, Pro Series, Endura-Drive™, Strawberry Watermelon, 1.6 lbs (720 g)
MusclePharm
900 mg3039.990.148View on iHerb →
10
Rule One Proteins, Essential Amino 9, Fruit Punch, 11.64 oz (330 g)
Rule One Proteins, Essential Amino 9, Fruit Punch, 11.64 oz (330 g)
Rule One Proteins
450 mg3020.650.153View on iHerb →
11
Rule One Proteins, Essential Amino 9, Blue Razz Lemonade, 12.17 oz (345 g)
Rule One Proteins, Essential Amino 9, Blue Razz Lemonade, 12.17 oz (345 g)
Rule One Proteins
450 mg3020.650.153View on iHerb →
12
Rule One Proteins, Essential Amino 9, Sour Watermelon, 12.17 oz (345 g)
Rule One Proteins, Essential Amino 9, Sour Watermelon, 12.17 oz (345 g)
Rule One Proteins
450 mg3020.650.153View on iHerb →
13
Nutricost, Performance, EAA, 240 Capsules
Nutricost, Performance, EAA, 240 Capsules
Nutricost
100 mg12018.950.158View on iHerb →
14
ALLMAX, MUSCLEAA™ Xtreme, Pina Colada, 1.17 lb (532 g)
ALLMAX, MUSCLEAA™ Xtreme, Pina Colada, 1.17 lb (532 g)
ALLMAX
600 mg3029.600.164View on iHerb →
15
ALLMAX, MUSCLEAA™ Xtreme, Cherry Limeade, 1.17 lbs (532 g)
ALLMAX, MUSCLEAA™ Xtreme, Cherry Limeade, 1.17 lbs (532 g)
ALLMAX
600 mg3029.600.164View on iHerb →
16
Primaforce, EAA, 180 Capsules
Primaforce, EAA, 180 Capsules
Primaforce
100 mg9015.000.167View on iHerb →
17
Protocol for Life Balance, Ortho Focus, 90 Capsules
Protocol for Life Balance, Ortho Focus, 90 Capsules
Protocol for Life Balance
300 mg4523.000.170View on iHerb →
18
Nature's Answer, Brewer's Yeast , 16 oz (454 g)
Nature's Answer, Brewer's Yeast , 16 oz (454 g)
Nature's Answer
540 mg1514.240.176View on iHerb →
19
EVLution Nutrition, EAA 7000, Unflavored, 8.4 oz (237 g)
EVLution Nutrition, EAA 7000, Unflavored, 8.4 oz (237 g)
EVLution Nutrition
250 mg3013.510.180View on iHerb →
20
Nutricost, Performance, EAA, Unflavored, 8.9 oz (249 g)
Nutricost, Performance, EAA, Unflavored, 8.9 oz (249 g)
Nutricost
350 mg3018.950.181View on iHerb →
21
Nutricost, Performance, EAA, Fruit Punch, 11.6 oz (330 g)
Nutricost, Performance, EAA, Fruit Punch, 11.6 oz (330 g)
Nutricost
350 mg3019.950.190View on iHerb →
22
Nutricost, Performance, EAA Powder, Peach Mango, 11.8 oz (330 g)
Nutricost, Performance, EAA Powder, Peach Mango, 11.8 oz (330 g)
Nutricost
350 mg3019.950.190View on iHerb →
23
Nutricost, Performance, EAA Powder, Passionfruit, Orange & Guava, 11.8 oz (330 g)
Nutricost, Performance, EAA Powder, Passionfruit, Orange & Guava, 11.8 oz (330 g)
Nutricost
350 mg3019.950.190View on iHerb →
24
Nutricost, Performance, EAA, Blue Raspberry, 11.8 oz (330 g)
Nutricost, Performance, EAA, Blue Raspberry, 11.8 oz (330 g)
Nutricost
350 mg3019.950.190View on iHerb →
25
Super Nutrition, SimplyOne®, 50+ Women Multivitamin + Super Complexes with Vitamin A, Vitamin C, Minerals, and Botanicals, Iron Free, 90 Tablets
Super Nutrition, SimplyOne®, 50+ Women Multivitamin + Super Complexes with Vitamin A, Vitamin C, Minerals, and Botanicals, Iron Free, 90 Tablets
Super Nutrition
100 mg9017.550.195View on iHerb →

How we rank L-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.