Are radishes high in oxalate?
A
No. Very low, <1 mg per 1/2 cup sliced
Range 0 to 1 mg across 2 studies, 58 g serving
0 mg50 mg = a day60 mg+
Radishes are low in oxalate: about <1 mg per 1/2 cup sliced, which is 1% 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 58 g serving (1/2 cup sliced). 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 |
|---|---|---|---|
| 0 mg | 0 mg | Raw, white (n=1) | Hönow R., Hesse A, 2002via Foods 2023;12:3201, Table 5 (CC BY 4.0) |
| <1 mg | 1.11 mg | Raw | Harvard T.H, 2023 |
| 1 mg | 1.7 mg | Raw, red (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