Foods high in Phenylalanine

Every food and ingredient below is ranked by measured Phenylalanine content per 100 g, drawn live from 71 USDA FoodData Central measurements. Values are laboratory-analysed or survey-derived, not estimated.

Top 25 foods highest in Phenylalanine

Ranked by Phenylalanine per 100g, across Foundation Foods and FNDDS ingredients.

#	Food or ingredient	Source	Per 100g (G)
1	Flour, soy, defatted	Foundation Food	2.86
2	Flour, soy, full-fat	Foundation Food	2.15
3	Mushroom, maitake	Foundation Food	1.62
4	Peanut butter, creamy	Foundation Food	1.5
5	Almond butter, creamy	Foundation Food	1.38
6	Mushroom, crimini	Foundation Food	1.24
7	Nuts, almonds, whole, raw	Foundation Food	1.2
8	Cheese, dry white, queso seco	Foundation Food	1.17
9	Mushroom, pioppini	Foundation Food	1.14
10	Mushrooms, white button	Foundation Food	1.12
11	Sesame butter, creamy	Foundation Food	1.12
12	Flaxseed, ground	Foundation Food	1.12
13	Mushroom, portabella	Foundation Food	1.02
14	Mushroom, oyster	Foundation Food	0.989
15	Sausage, turkey, breakfast links, mild, raw	Foundation Food	0.82
16	Mushroom, enoki	Foundation Food	0.819
17	Mushrooms, shiitake	Foundation Food	0.787
18	Mushroom, king oyster	Foundation Food	0.743
19	Eggs, Grade A, Large, egg white	Foundation Food	0.726
20	Mushroom, lion's mane	Foundation Food	0.703
21	Eggs, Grade A, Large, egg yolk	Foundation Food	0.673
22	Mushroom, beech	Foundation Food	0.671
23	Eggs, Grade A, Large, egg whole	Foundation Food	0.66
24	Nuts, walnuts, English, halves, raw	Foundation Food	0.607
25	Sausage, breakfast sausage, beef, pre-cooked, unprepared	Foundation Food	0.6

Lowest in Phenylalanine

For contrast — the 10 lowest non-zero values on record, per 100g.

#	Food or ingredient	Source	Per 100g (G)
62	Nectarines, raw	Foundation Food	0.01
63	Pears, raw, bartlett	Foundation Food	0.013
64	Pears, raw, bartlett (Includes foods for USDA's Food Distribution Program)	Foundation Food	0.013
65	Peaches, yellow, raw	Foundation Food	0.018
66	Melons, cantaloupe, raw	Foundation Food	0.019
67	Butter, stick, salted	Foundation Food	0.025
68	Kiwifruit, green, raw	Foundation Food	0.039
69	Carrots, frozen, unprepared (Includes foods for USDA's Food Distribution Program)	Foundation Food	0.042
70	Carrots, frozen, unprepared	Foundation Food	0.042
71	Almond milk, unsweetened, plain, refrigerated	Foundation Food	0.043

More on Phenylalanine

What Phenylalanine is, how it is measured, and where these values come from.

Phenylalanine nutrient reference →

Sourced from USDA FoodData Central — Foundation Foods; not yet through an editorial verification pass.

USDA release 2026-04-30. All values are per 100 g unless stated otherwise.