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

Purslane, leaves

🔴 Avoid — High
248 mg oxalate / serving
Serving: 1 cup (40 g) | Per 100 g: 621 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

248 mg
Oxalate / serving
High
45 mg
Sodium / 100g
Low Na
2.0 g
Protein / 100g
Tier 1
65 mg
Calcium / 100g
Tier 1

📏 Oxalate by Serving Size

ServingWeightOxalateVerdict
1 cup40 g248 mg Avoid
2 x 1 cup80 g496 mg Avoid
½ x 1 cup20 g124 mg Avoid

🏷️ Tags

Vegetables High Oxalate 🔴 Oxalate Avoid

🔴 See all Vegetables rated Avoid for kidney stones →

⚖️ Compare this food: · vs Broccoli · vs Cabbage

🔗 Related Foods

❓ Frequently Asked Questions

Is Purslane safe for kidney stones?

Straight talk: Purslane is high in oxalate. 248 mg per 1 cup puts it firmly in the avoid zone (100+ mg). Kidney stone patients should limit this one. Harvard measured it, not us.

What's the oxalate content of Purslane?

The exact figure: 248 mg of oxalate per 1 cup of Purslane. Works out to 621 mg/100g. This is the number kidney stone patients actually need. Harvard (2024) verified.

Is Purslane high in oxalates?

Yeah, it's high. 248 mg per 1 cup is way over the safe threshold. Purslane belongs in the 'limit severely' column.

What are the best low-oxalate alternatives to Purslane?

There are almost always safer swaps in the same food family. For Purslane, check the related foods section below — the green-marked ones are your best bets. All verified by Harvard (2024).

How much sodium does Purslane have?

Sodium's not the issue here. Purslane has 45 mg per 100g — comfortably low. No need to worry about salt pushing extra calcium into your urine with this food.

Can I eat Purslane if I pair it with dairy?

Pairing strategy: eat Purslane alongside a calcium source. The calcium-oxalate binding happens in your gut, not your kidneys. One less dose of oxalate hitting your bloodstream. Timing = same meal.

Does boiling Purslane reduce the oxalate?

Cooking method changes the game. Boiling Purslane and tossing the water = 30-50% less oxalate. Steaming barely touches it. Roasting does nothing. Raw preserves everything.

🔍 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.