Is black pepper high in oxalate?
C
Moderately. Moderate, 12 mg per 1 tsp ground
One study at 12 mg, 2 g serving
0 mg50 mg = a day60 mg+
Black pepper has a moderate amount of oxalate: about 12 mg per 1 tsp ground, which is 24% of the 50 mg a day many stone clinics aim for, or 12% 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 2 g serving (1 tsp ground). 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 |
|---|---|---|---|
| 12 mg | 623 mg | ground | Siener R, 2021 |
By Oliver Silen · Data checked November 2, 2026 · Not medical advice