Is Ritz Crackers Safe for Kidney Stones? (Safe)
mg oxalate
per serving
Serving: (16 g)
Verdict: 🟢 Safe
Per 100g: 25 mg
Data: Harvard T.H. Chan SPH (2024)
In practical terms, Ritz Crackers is a low-risk food for kidney stone patients. Its 4 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 grains & pasta, Ritz Crackers sits well 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 Ritz Crackers is 72% below the category norm. Within its specific category, Ritz Crackers 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 cutoff comes from clinical guidance for stone formers. Below it, a food's oxalate contribution is small enough not to move the needle for most patients. Harvard's 2024 lab data sits behind these figures — direct measurements, not estimates. For Ritz Crackers, the measured oxalate value is 4 mg per (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. Ritz Crackers comes in at 4 mg oxalate per (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. Applied to Ritz Crackers: 4 mg oxalate per — Safe per Harvard (2024).
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. Ritz Crackers comes in at 4 mg oxalate per (Safe) in the measured database.