Is Fennel seed Herbs and Spices Safe for Kidney Stones? (Safe)
mg oxalate
per serving
Serving: 1 serving (100 g)
Verdict: 🟢 Safe
Per 100g: 1293 mg
Data: Harvard T.H. Chan SPH (2024)
In practical terms, Fennel seed Herbs and Spices is a low-risk food for kidney stone patients. Its 23 mg oxalate per serving stays under the 25 mg line, so it can appear in your regular rotation without extra calculation. As always, staying hydrated and getting dietary calcium supports stone prevention.
Among vegetables, Fennel seed Herbs and Spices sits below the category average of 27 mg. For context, 219 out of 271 vegetables (80%) are rated 🟢 Safe (under 25 mg oxalate/serving). The average vegetables in our database has 27 mg oxalate per serving — which means Fennel seed Herbs and Spices is 15% below the category norm. Within its specific category, Fennel seed Herbs and Spices ranks near the middle of the pack. This context matters because two 'Safe' foods can have very different oxalate levels — one might have 5 mg while another has 24 mg. Both are Safe, but the first gives you more dietary flexibility. Browse all vegetables rated Safe to compare within the same verdict level.
Why does the safe threshold matter?
The 25 mg per serving threshold is based on clinical guidance for kidney stone patients. Harvard's lab data (2024) provides the most reliable oxalate measurements available — no database estimates, direct lab analysis. For context, Fennel seed Herbs and Spices measures 23 mg per 1 serving, rated Safe.
Can I eat this food every day?
For Safe foods (under 25 mg/serving), daily use is generally fine. Caution and Avoid foods work better as occasional items — rotate them with safer options so no single high-oxalate food becomes a habit. For Fennel seed Herbs and Spices, the measured oxalate value is 23 mg per 1 serving (Safe).
Where does the oxalate data come from?
Harvard T.H. Chan School of Public Health (2024) via the OHF database. These are direct laboratory measurements — the most reliable oxalate data available for food. For context, Fennel seed Herbs and Spices measures 23 mg per 1 serving, rated Safe.
Should I also check sodium and calcium?
Yes — kidney stone risk isn't just about oxalate. High sodium increases urinary calcium (a stone promoter). Adequate dietary calcium (from food, not supplements) actually binds oxalate in your gut. Check the food's full nutrition page for the complete picture. For Fennel seed Herbs and Spices, the measured oxalate value is 23 mg per 1 serving (Safe).