Is Croissant Safe for Kidney Stones?

Q: Is Croissant safe for kidney stones?

Short answer: yes. Longer answer: at 1 mg per 1 medium, Croissant is one of the safer things you can eat if you're watching oxalate. Harvard T.H. Chan SPH measured this directly.

Q: How much oxalate is in Croissant?

Here are the numbers: 1 mg oxalate in one 1 medium of Croissant (57g). Per 100 grams, that's 1 mg. Harvard T.H. Chan SPH did the lab work (2024) — these aren't database guesses.

Q: Is Croissant a high-oxalate food?

Low. 1 mg per 1 medium puts Croissant firmly in the low-oxalate category. Safe for regular eating if you're managing kidney stones.

Q: What are the best low-oxalate alternatives to Croissant?

Substitutes exist. The safe alternatives listed below are all low-oxalate foods in the same family as Croissant. Grab one of those and you dodge the oxalate while keeping similar flavors.

Q: How much sodium does Croissant have?

Low sodium: 281 mg/100g. That's a non-issue for kidney stones. Just don't undo it by drowning it in salt during cooking.

🟢 Safe
Oxalate <25 mg/serving

🟡 Caution
Oxalate 25-99 mg/serving

🔴 Avoid
Oxalate ≥100 mg/serving

✓ 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

1 mg

Oxalate / serving

Low Oxalate

281 mg

Sodium / 100g

Mod Na

4.9 g

Protein / 100g

Tier 1

30 mg

Calcium / 100g

Tier 1

⚠️ Moderate Sodium

Croissant has 281 mg sodium per 100g. While not critically high, kidney stone patients should monitor sodium intake as excess can raise urinary calcium.

📏 Oxalate by Serving Size

Serving	Weight	Oxalate	Verdict
1 medium	57 g	1 mg	Safe
2 x 1 medium	114 g	2 mg	Safe
½ x 1 medium	28 g	0.5 mg	Safe

🏷️ Tags

🟢 See all Grains & Pasta rated Safe for kidney stones →

🔗 Related Foods

❓ Frequently Asked Questions

Short answer: yes. Longer answer: at 1 mg per 1 medium, Croissant is one of the safer things you can eat if you're watching oxalate. Harvard T.H. Chan SPH measured this directly.

How much oxalate is in Croissant?

Here are the numbers: 1 mg oxalate in one 1 medium of Croissant (57g). Per 100 grams, that's 1 mg. Harvard T.H. Chan SPH did the lab work (2024) — these aren't database guesses.

Is Croissant a high-oxalate food?

Low. 1 mg per 1 medium puts Croissant firmly in the low-oxalate category. Safe for regular eating if you're managing kidney stones.

What are the best low-oxalate alternatives to Croissant?

Substitutes exist. The safe alternatives listed below are all low-oxalate foods in the same family as Croissant. Grab one of those and you dodge the oxalate while keeping similar flavors.

How much sodium does Croissant have?

Low sodium: 281 mg/100g. That's a non-issue for kidney stones. Just don't undo it by drowning it in salt during cooking.

🔍 Explore More About This Food

🟢See our detailed safety analysis for this food 📊Exact oxalate numbers: how much is in a serving 📋Low, moderate, or high oxalate? Full breakdown 🧂How much sodium? Kidney stone risk check

📚 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.

Croissant