Is Special K high in oxalate?
B
No. Low, 7.3 mg per 1 1/4 cups
Range 7.3 to 7.3 mg across 1 study, 39 g serving
0 mg50 mg = a day60 mg+
Special K is low in oxalate: about 7.3 mg per 1 1/4 cups, which is 15% 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 39 g serving (1 1/4 cups). 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 |
|---|---|---|---|
| 7.3 mg | 18.72 mg | Ready to eat | Harvard T.H, 2023 |
By Oliver Silen · Data checked November 2, 2026 · Not medical advice