Home › Compare › Juice, Bitter Gourd/Bitter Melon vs Tomato paste

🟢 Tomato paste VS 🟡 Juice, Bitter Gourd/Bitter Melon

One of these is an easy choice for kidney stone patients. Tomato paste clocks in at just 2 mg of oxalate per serving — while Juice, Bitter Gourd/Bitter Melon sits at 68 mg (34x higher). The Harvard (2024) lab data leaves no ambiguity here.

✓ Lab-Verified Data Oxalate values from Harvard T.H. Chan SPH Oxalate Database (2024), measured via ion chromatography. This site is a dietary reference tool, not a medical resource.

⚖️ Head-to-Head Comparison

🟢
Tomato paste
Safe — Low Oxalate
2 mg oxalate / serving
Serving: 2 tbsp (33 g)
Per 100 g: 6.1 mg oxalate
Sodium: — | Calcium: — | Protein: —
🟡
Juice, Bitter Gourd/Bitter Melon
Caution — Moderate Oxalate
68 mg oxalate / serving
Serving: 1 cup (250 g)
Per 100 g: 27 mg oxalate
Sodium: 10 mg/100g | Calcium: 16 mg/100g | Protein: 0.4 g/100g

🏆 The Verdict: Choose Tomato paste

At 2 mg oxalate per serving (rated Safe), Tomato paste is the clear winner over Juice, Bitter Gourd/Bitter Melon (68 mg, Caution). The 34x difference comes from Harvard's 2024 lab measurements — this isn't an estimate or guess. Build your meals around Tomato paste and use Juice, Bitter Gourd/Bitter Melon sparingly, if at all.

🔍 Key Takeaways

Oxalate gap: 68 mg vs 2 mg per serving — a 34x difference. One of these is significantly easier to fit into a kidney stone diet.
Verdicts: Juice, Bitter Gourd/Bitter Melon is rated Caution (25-99 mg/serving); Tomato paste is rated Safe (under 25 mg/serving).
Serving strategy: If you choose Juice, Bitter Gourd/Bitter Melon, consider a half portion or pair it with a calcium source. Tomato paste can be eaten more freely.
Cooking tip: For either vegetable, boiling and discarding the cooking water can reduce soluble oxalate by 30-50%. Steaming or eating raw preserves more oxalate.

❓ Frequently Asked Questions

Which is better for kidney stones — Juice, Bitter Gourd/Bitter Melon or Tomato paste?

The numbers leave no doubt: Tomato paste (2 mg oxalate/serving, Safe) beats Juice, Bitter Gourd/Bitter Melon (68 mg, Caution) by a factor of 34x. For kidney stone patients, Tomato paste is the pick. Juice, Bitter Gourd/Bitter Melon is a food to approach with portion awareness.

Can I eat Juice, Bitter Gourd/Bitter Melon and Tomato paste together?

It's doable, but portion size matters a lot. Together they'd run about 70 mg oxalate. Use Tomato paste as your base and treat Juice, Bitter Gourd/Bitter Melon as a garnish or small side — that keeps the total oxalate manageable.

How should I prepare Juice, Bitter Gourd/Bitter Melon vs Tomato paste differently?

For Juice, Bitter Gourd/Bitter Melon, boiling and draining cuts oxalate by 30-50%. Steaming preserves more. For Tomato paste, preparation method matters less — it's already low-oxalate. If you're cooking both, boil Juice, Bitter Gourd/Bitter Melon separately and discard the water.

What are good substitutes if I want to avoid Juice, Bitter Gourd/Bitter Melon?

The obvious swap is Tomato paste — same food category, 34x less oxalate. You can also browse the Vegetables category on OxalateWatch for other 🟢 Safe options. The key is sticking with foods rated Safe (under 25 mg/serving).

Browse all Vegetables 🟢 Low Oxalate Foods Tomato paste page Juice, Bitter Gourd/Bitter Melon page
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.