Oxalate <25 mg/serving
Oxalate 25-99 mg/serving
Oxalate ≥100 mg/serving
📊 Nutrition at a Glance
📏 Oxalate by Serving Size
| Serving | Weight | Oxalate | Verdict |
|---|---|---|---|
| 1 serving | 100 g | 0 mg | Safe |
| 2 x 1 serving | 200 g | 0 mg | Safe |
| ½ x 1 serving | 50 g | 0 mg | Safe |
🏷️ Tags
🟢 See all Fruits rated Safe for kidney stones →
🔗 Related Foods
🟢 Safe alternatives (recommended)
⚠️ Other foods in this category to watch
❓ Frequently Asked Questions
Is Grape Seed Extract safe for kidney stones?
No red flags here. Just 0 mg per 1 serving — well below the 25 mg danger line. You can keep Grape Seed Extract in your regular rotation. Data comes from Harvard (2024).
What's the oxalate content of Grape Seed Extract?
Here are the numbers: 0 mg oxalate in one 1 serving of Grape Seed Extract (100g). Per 100 grams, that's 0 mg. Harvard T.H. Chan SPH did the lab work (2024) — these aren't database guesses.
Is Grape Seed Extract a high-oxalate food?
Low. 0 mg per 1 serving puts Grape Seed Extract firmly in the low-oxalate category. Safe for regular eating if you're managing kidney stones.
What can I eat instead of Grape Seed Extract?
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 Grape Seed Extract with a fraction of the oxalate.
How reliable is the data for Grape Seed Extract?
Oxalate: very reliable (Harvard 2024 lab measurement). Other nutrients: still being matched to USDA data. The oxalate figure is what matters for a kidney stone decision, and that one's solid.