Is Tapioca Flour Flour Safe for Kidney Stones? (Safe)
mg oxalate
per serving
Serving: 1/4 cup (29 g)
Verdict: 🟢 Safe
Per 100g: 33 mg
Data: Harvard T.H. Chan SPH (2024)
What this means: Tapioca Flour Flour is rated Safe (🟢). At 9 mg oxalate per serving, it's well under the 25 mg safety threshold. You can include it regularly in a kidney stone diet. Pair it with calcium-rich foods (dairy, fortified plant milks) for additional protection, and drink plenty of water throughout the day.
Among grains & pasta, Tapioca Flour Flour sits below the category average of 14 mg. For context, 170 out of 201 grains & pasta (84%) are rated 🟢 Safe (under 25 mg oxalate/serving). The average grains & pasta in our database has 14 mg oxalate per serving — which means Tapioca Flour Flour is 36% below the category norm. Within its specific category, Tapioca Flour Flour 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 grains & pasta 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. For context, Tapioca Flour Flour measures 9 mg per 1/4 cup, rated Safe.
Can I eat this food every day?
Daily eating is fine for Safe foods (under 25 mg/serving). For Caution or Avoid foods, spread them out and alternate with low-oxalate picks. The idea is keeping your weekly oxalate load manageable, not eliminating any single food. Tapioca Flour Flour comes in at 9 mg oxalate per 1/4 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 context, Tapioca Flour Flour measures 9 mg per 1/4 cup, 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 Tapioca Flour Flour, the measured oxalate value is 9 mg per 1/4 cup (Safe).