🟢 Safe
Oxalate <25 mg/serving
🟡 Caution
Oxalate 25-99 mg/serving
🔴 Avoid
Oxalate ≥100 mg/serving
🔴

Cereals, Buckwheat

🔴 Avoid — High
105 mg oxalate / serving
Serving: 1/2 cup (85 g) | Per 100 g: 123 mg
✓ Medically Reviewed Content reviewed by OxalateWatch Editorial Team. Based on Harvard T.H. Chan SPH oxalate data (2024) and NKF/AUA dietary guidelines.

📊 Nutrition at a Glance

105 mg
Oxalate / serving
High
0 mg
Sodium / 100g
Low Na
8.9 g
Protein / 100g
Tier 1
30 mg
Calcium / 100g
Tier 1

📏 Oxalate by Serving Size

ServingWeightOxalateVerdict
1/2 cup85 g105 mg Avoid
2 x 1/2 cup170 g210 mg Avoid
½ x 1/2 cup42 g52.5 mg Caution

🏷️ Tags

Grains & Pasta Plant-Based High Oxalate 🔴 Oxalate Avoid

🔴 See all Grains & Pasta rated Avoid for kidney stones →

⚖️ Compare this food: · vs Pita bread · vs Naan bread

🔗 Related Foods

❓ Frequently Asked Questions

Should I avoid Cereals if I have kidney stones?

Skip it if you can. Cereals packs 105 mg of oxalate per 1/2 cup. That's not a borderline number — it's solidly in the high-risk zone. Check the alternatives listed on this page.

How much oxalate is in Cereals?

One 1/2 cup of Cereals = 105 mg oxalate. Scale it up to 100g and you're at 123 mg. Direct measurement from Harvard, 2024. About as reliable as food data gets.

Is Cereals low or high oxalate?

Yeah, it's high. 105 mg per 1/2 cup is way over the safe threshold. Cereals belongs in the 'limit severely' column.

What are the best low-oxalate alternatives to Cereals?

Don't give up the whole category — just pick a safer member of it. The green foods in the related section all work as substitutes for Cereals with a fraction of the oxalate.

Can I eat Cereals if I pair it with dairy?

Yes, it helps. Calcium from food (yogurt, cheese, milk) binds oxalate in your gut so less reaches your kidneys. With Cereals, having dairy at the same meal is a smart move. Not supplements though — those work differently.

Does boiling Cereals reduce the oxalate?

Yes — boiling Cereals and dumping the water can cut oxalate by roughly 30-50%. The oxalate dissolves into the water, and you pour it out. Steaming does way less. Raw = max oxalate.

How much sodium does Cereals have?

Sodium's not the issue here. Cereals has 0 mg per 100g — comfortably low. No need to worry about salt pushing extra calcium into your urine with this food.

🔍 Explore More About This Food

📚 Data Sources

Oxalate: Harvard T.H. Chan School of Public Health (2024) via OHF. Nutrition: USDA FoodData Central (SR Legacy 2018 & Foundation Foods).

📖 Key Scientific References

Taylor EN, Curhan GC. Oxalate intake and the risk for nephrolithiasis. J Am Soc Nephrol. 2007;18(7):2198-2204. PMID: 17538185
Borghi L, Schianchi T, Meschi T, et al. Comparison of two diets for the prevention of recurrent stones in idiopathic hypercalciuria. N Engl J Med. 2002;346(2):77-84. DOI: 10.1056/NEJMoa010369
Fink HA, Akornor JW, Garimella PS, et al. Diet, fluid, or supplements for secondary prevention of nephrolithiasis. Eur Urol. 2009;56(1):72-80. DOI: 10.1016/j.eururo.2009.03.031
Ferraro PM, Taylor EN, Gambaro G, Curhan GC. Dietary and lifestyle factors for primary prevention of nephrolithiasis. BMC Nephrol. 2020;21(1):267. PMID: 32652950
Pearle MS, Goldfarb DS, Assimos DG, et al. Medical management of kidney stones: AUA guideline. J Urol. 2014;192(2):316-324. DOI: 10.1016/j.juro.2014.05.006
Liebman M, Costa G. Effects of calcium and magnesium on urinary oxalate excretion after oxalate loads. J Urol. 2000;163(5):1565-1569. PMID: 10751889
Holmes RP, Assimos DG. The impact of dietary oxalate on kidney stone formation. Urol Res. 2004;32(5):311-316. DOI: 10.1007/s00240-004-0437-3
Lin BB, Lin ME, Huang RH, et al. Dietary treatment and fluid intake for prevention of recurrent calcium stones. PLoS One. 2021;16(4):e0250257. PMID: 33872340
This is dietary reference information, NOT medical advice. Talk to your doctor or a registered dietitian before changing your diet. Oxalate tolerance varies by person, stone type, and medication.