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Cheapest DL-Phenylalanine on iHerb

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

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

The priciest option here costs about 69.1× more per 100 mg of DL-Phenylalanine than the best-value pick Source Naturals. 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
Source Naturals, DLPA, 120 Tablets
Source Naturals, DLPA, 120 Tablets
Source Naturals
750 mg6014.070.031View on iHerb →
2
Carlson, DLPA, DL-Phenylalanine, 500 mg, 60 Capsules
Carlson, DLPA, DL-Phenylalanine, 500 mg, 60 Capsules
Carlson
500 mg6012.270.041View on iHerb →
3
DaVinci Laboratories, DL-Phenylalanine, 750 mg, 60 Capsules
DaVinci Laboratories, DL-Phenylalanine, 750 mg, 60 Capsules
DaVinci Laboratories
750 mg6025.060.056View on iHerb →
4
Nutra BioGenesis, Ultra Lean Appetite Control, 120 Capsules
Nutra BioGenesis, Ultra Lean Appetite Control, 120 Capsules
Nutra BioGenesis
1,000 mg3043.990.147View on iHerb →
5
Solaray, Briteside™, Joy Boost Formula, 90 VegCaps
Solaray, Briteside™, Joy Boost Formula, 90 VegCaps
Solaray
500 mg3027.990.187View on iHerb →
6
Metabolic Nutrition, Hydra EAA, Watermelon, 35.2 oz (1,000 g)
Metabolic Nutrition, Hydra EAA, Watermelon, 35.2 oz (1,000 g)
Metabolic Nutrition
500 mg4059.990.300View on iHerb →
7
Metabolic Nutrition, Hydra EAA, Fruit Punch , 35.2 oz (1,000 g)
Metabolic Nutrition, Hydra EAA, Fruit Punch , 35.2 oz (1,000 g)
Metabolic Nutrition
500 mg4059.990.300View on iHerb →
8
Metabolic Nutrition, Hydra EAA, Blue Raspberry, 35.2 oz (1,000 g)
Metabolic Nutrition, Hydra EAA, Blue Raspberry, 35.2 oz (1,000 g)
Metabolic Nutrition
500 mg4059.990.300View on iHerb →
9
NutraBio, EAA Pure, Dragonfruit Candy, 0.9 lb (414 g)
NutraBio, EAA Pure, Dragonfruit Candy, 0.9 lb (414 g)
NutraBio
300 mg3029.990.333View on iHerb →
10
NutraBio, EAA Pure, Raspberry Lemonade, 0.93 lb (421 g)
NutraBio, EAA Pure, Raspberry Lemonade, 0.93 lb (421 g)
NutraBio
300 mg3029.990.333View on iHerb →
11
NutraBio, EAA Pure, Blue Raspberry, 0.87 lb (393 g)
NutraBio, EAA Pure, Blue Raspberry, 0.87 lb (393 g)
NutraBio
300 mg3029.990.333View on iHerb →
12
NutraBio, EAA, Raw Unflavored, 0.70 lb (317 g)
NutraBio, EAA, Raw Unflavored, 0.70 lb (317 g)
NutraBio
300 mg3034.990.389View on iHerb →
13
NutraBio, EAA, Strawberry Lemonade, 0.88 lb (401 g)
NutraBio, EAA, Strawberry Lemonade, 0.88 lb (401 g)
NutraBio
300 mg3034.990.389View on iHerb →
14
NutraBio, Intra Blast, Intra Workout Amino Fuel, Cherry Limeade, 1.56 lb (709 g)
NutraBio, Intra Blast, Intra Workout Amino Fuel, Cherry Limeade, 1.56 lb (709 g)
NutraBio
300 mg3044.990.500View on iHerb →
15
NutraBio, Alpha EAA, Blueberry Lemonade, 0.87 lb (395 g)
NutraBio, Alpha EAA, Blueberry Lemonade, 0.87 lb (395 g)
NutraBio
300 mg3044.990.500View on iHerb →
16
Dr. Mercola, Pure Power, EAA + BCAA, Orange, 12.3 oz (350 g)
Dr. Mercola, Pure Power, EAA + BCAA, Orange, 12.3 oz (350 g)
Dr. Mercola
250 mg3054.990.733View on iHerb →
17
NaturesPlus, Herbal Actives, InflamActin®, 60 Vegan Capsules
NaturesPlus, Herbal Actives, InflamActin®, 60 Vegan Capsules
NaturesPlus
100 mg3023.330.778View on iHerb →
18
Solaray, St. John's Wort, 60 VegCaps
Solaray, St. John's Wort, 60 VegCaps
Solaray
150 mg3037.090.824View on iHerb →
19
NutraBio, Intra Fuel, Leg Day™, New York Punch, 2.11 lb (958 g)
NutraBio, Intra Fuel, Leg Day™, New York Punch, 2.11 lb (958 g)
NutraBio
300 mg2059.991.000View on iHerb →
20
Force Factor, Test X180® PM, 120 Tablets
Force Factor, Test X180® PM, 120 Tablets
Force Factor
100 mg3031.991.07View on iHerb →
21
NutraBio, Intra Carb, Leg Day™, Blueberry Lemonade, 2.09 lb (947 g)
NutraBio, Intra Carb, Leg Day™, Blueberry Lemonade, 2.09 lb (947 g)
NutraBio
300 mg2064.991.08View on iHerb →
22
NutraBio, Intra Fuel, Leg Day™, Grape Berry Crush, 2.08 lb (946 g)
NutraBio, Intra Fuel, Leg Day™, Grape Berry Crush, 2.08 lb (946 g)
NutraBio
300 mg2064.991.08View on iHerb →
23
NutraBio, Intra Fuel Leg Day™, Peachy Glutes Peach Mango, 2.05 lb (930 g)
NutraBio, Intra Fuel Leg Day™, Peachy Glutes Peach Mango, 2.05 lb (930 g)
NutraBio
300 mg2064.991.08View on iHerb →
24
BrainMD, Craving Control, 90 Capsules
BrainMD, Craving Control, 90 Capsules
BrainMD
200 mg1545.951.53View on iHerb →
25
Source Naturals, Higher Mind, 90 Tablets
Source Naturals, Higher Mind, 90 Tablets
Source Naturals
100 mg2247.612.16View on iHerb →

How we rank DL-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.