Are black currants high in oxalate?
C
Moderately. Moderate, 11 mg per 1/2 cup
One study at 11 mg, 56 g serving
0 mg50 mg = a day60 mg+
Lower-oxalate swap: Strawberries, grade A, about 3.4 mg per 1 cup.
Black currants have a moderate amount of oxalate: about 11 mg per 1/2 cup, which is 22% of the 50 mg a day many stone clinics aim for, or 11% of the 100 mg others allow.
50 or 100 mg a day: which target is yours
Where this number comes from
Each row is one published measurement, converted to a 56 g serving (1/2 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 |
|---|---|---|---|
| 11 mg | 19 mg | Raw (n=1) | Hönow R., Hesse A, 2002via Foods 2023;12:3201, Table 5 (CC BY 4.0) |
By Oliver Silen · Data checked November 2, 2026 · Not medical advice