Is Shredded Wheat Cereal Safe for Kidney Stones? (Caution)
mg oxalate
per serving
Serving: (51 g)
Verdict: 🟡 Caution
Per 100g: 80.4 mg
Data: Harvard T.H. Chan SPH (2024)
Here's the takeaway: Shredded Wheat Cereal falls in the Caution band (🟡) at 41 mg oxalate per serving. Not off-limits, but not free — moderate portions, a few times a week at most, and preferably with dairy or another calcium source at the same meal.
Putting Shredded Wheat Cereal in context: it lands well above the category average of 14 mg. In the database, 84% of grains & pasta (170 of 201) fall in the 🟢 Safe group (under 25 mg oxalate/serving). The typical grains & pasta here averages 14 mg oxalate per serving, so Shredded Wheat Cereal runs 195% above that baseline. That places it on the higher end for oxalate in its category. Why this matters: the gap between two Safe foods can be wide — one may hold 5 mg oxalate while another sits at 24 mg. The lower one leaves more room in your day. See all grains & pasta rated Caution for a full side-by-side.
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. Shredded Wheat Cereal comes in at 41 mg oxalate per (Caution) 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. For context, Shredded Wheat Cereal measures 41 mg per , rated Caution.
Where does the oxalate data come from?
The numbers come from Harvard T.H. Chan SPH's 2024 laboratory measurements, published through the OHF database. Direct lab analysis, which is why they're treated as the reference values for food oxalate. For Shredded Wheat Cereal, the measured oxalate value is 41 mg per (Caution).
Should I also check sodium and calcium?
Definitely. Oxalate is only part of the story — high sodium raises calcium in urine, and dietary calcium (from food, not pills) binds oxalate in the gut. The food's main page lists both, so it's worth checking before you plan around it. For Shredded Wheat Cereal, the measured oxalate value is 41 mg per (Caution).