Is soy milk high in oxalate?
C
Moderately. Moderate, 10 mg per 1 cup
Range 9.6 to 11 mg across 2 studies, 240 g serving
0 mg50 mg = a day60 mg+
Lower-oxalate swap: Oat milk, grade A, about 3.6 mg per 1 cup.
Soy milk has a moderate amount of oxalate: about 10 mg per 1 cup, which is 20% of the 50 mg a day many stone clinics aim for.
Where this number comes from
Each row is one published measurement, converted to a 240 g serving (1 cup). The grade and the range use the rows prepared the way the serving is eaten, and take the middle. How the grades work.
| Per serving | Per 100 g | Preparation | Source |
|---|---|---|---|
| 9.6 mg | 4 mg | Silk Original (n=1) | Borin JF, Knight J, Holmes RP, Joshi S, Goldfarb DS, Loeb S, 2022 |
| 11 mg | 4.4 mg | soybean drink, 62% soymilk | Siener R, 2021 |
By Oliver Silen · Data checked November 2, 2026 · Not medical advice