Is Tea (Herbal) Safe for Kidney Stones? (Safe)
mg oxalate
per serving
Serving: 1 cup (237 g)
Verdict: 🟢 Safe
Per 100g: 6 mg
Data: Harvard T.H. Chan SPH (2024)
In practical terms, Tea (Herbal) is a low-risk food for kidney stone patients. Its 14 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 beverages, Tea (Herbal) sits well below the category average of 40 mg. For context, 82 out of 92 beverages (89%) are rated 🟢 Safe (under 25 mg oxalate/serving). The average beverages in our database has 40 mg oxalate per serving — which means Tea (Herbal) is 65% below the category norm. Within its specific category, Tea (Herbal) ranks among the lower-oxalate options. 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 beverages rated Safe to compare within the same verdict level.
Why does the safe threshold matter?
The 25 mg line is the reference point clinicians use to separate everyday foods from ones that need caution. Every value on this page traces back to Harvard's 2024 lab analysis, so the threshold is applied to measured data rather than estimates. Tea (Herbal) comes in at 14 mg oxalate per 1 cup (Safe) in the measured database.
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. Tea (Herbal) comes in at 14 mg oxalate per 1 cup (Safe) in the measured database.
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 Tea (Herbal), the measured oxalate value is 14 mg per 1 cup (Safe).
Should I also check sodium and calcium?
Yes — oxalate alone doesn't decide stone risk. Sodium pushes more calcium into urine, and calcium from food (not supplements) helps bind oxalate during digestion. The main food page covers sodium and calcium alongside oxalate. Applied to Tea (Herbal): 14 mg oxalate per 1 cup — Safe per Harvard (2024).