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

Grain, Bran, Rice

🟡 Caution — Moderate
60 mg oxalate / serving
Serving: 1/4 cup (30 g) | Per 100 g: 200 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

60 mg
Oxalate / serving
Moderate
0 mg
Sodium / 100g
Low Na
7.3 g
Protein / 100g
Tier 1
8 mg
Calcium / 100g
Tier 1

📏 Oxalate by Serving Size

ServingWeightOxalateVerdict
1/4 cup30 g60 mg Caution
2 x 1/4 cup60 g120 mg Avoid
½ x 1/4 cup15 g30 mg Caution

🏷️ Tags

Grains & Pasta Plant-Based Moderate Oxalate 🟡 Oxalate Caution

🟡 See all Grains & Pasta rated Caution for kidney stones →

⚖️ Compare this food: · vs Focaccia bread · vs Rice vermicelli

🔗 Related Foods

❓ Frequently Asked Questions

Should I avoid Grain if I have kidney stones?

Proceed, but with awareness. Grain delivers 60 mg oxalate per 1/4 cup. That's moderate — above the safe line, below the danger line. Portion size is your friend here.

How much oxalate is in Grain?

The lab result: 60 mg per 1/4 cup (30g serving). That's 200 mg per 100g. Harvard's ion chromatography analysis, 2024. Not crowdsourced, not estimated.

Is Grain low or high oxalate?

Middle of the pack. 60 mg oxalate per 1/4 cup puts Grain in the moderate zone. Fine occasionally, not an everyday food.

What are the best low-oxalate alternatives to Grain?

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 Grain with a fraction of the oxalate.

How much sodium does Grain have?

0 mg sodium per 100g in Grain. Well under the 460 mg threshold. One less thing on your kidney stone checklist.

How much Grain is safe to eat?

The portion math: 1/4 cup = 60 mg oxalate. Half serving = ~30 mg. With a 100 mg daily oxalate target, 60 mg from one food eats a big chunk of your budget. Go smaller.

🔍 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.