📦 Processed Food

Canned, packaged, or processed foods. Based on Harvard T.H. Chan SPH oxalate data (2024).

48 foods in this collection

✓ Medically Reviewed Content reviewed by OxalateWatch editorial team. Based on Harvard T.H. Chan SPH oxalate data (2024) and NKF/AUA dietary guidelines.

🟢 Safe
36 foods
75%

🟡 Caution
10 foods
20%

🔴 Avoid
2 foods
4%

🍽️ Foods in This Collection

🟢 Beans

8 mg oxalate / serving

Safe

🟢 Carrots

9 mg oxalate / serving

Safe

🟢 Celeriac

5 mg oxalate / serving

Safe

🟢 Corn

2 mg oxalate / serving

Safe

🟢 Grape leaves

7 mg oxalate / serving

Safe

🟢 Mushrooms

1 mg oxalate / serving

Safe

🟢 Potato

15 mg oxalate / serving

Safe

🟢 Pumpkin

7 mg oxalate / serving

Safe

🔴 Spinach

493 mg oxalate / serving

Avoid

🟢 Tomatoes

11 mg oxalate / serving

Safe

🟢 Water Chestnuts

1 mg oxalate / serving

Safe

🟡 Berries

27 mg oxalate / serving

Caution

🟢 Berries

9 mg oxalate / serving

Safe

🟢 Berries

20 mg oxalate / serving

Safe

🟢 Cherries

6 mg oxalate / serving

Safe

🟢 Olives

6 mg oxalate / serving

Safe

🟢 Olives

11 mg oxalate / serving

Safe

🟢 Orange

14 mg oxalate / serving

Safe

🟢 Peaches

3 mg oxalate / serving

Safe

🟢 Pears

4 mg oxalate / serving

Safe

🟢 Pineapple

7 mg oxalate / serving

Safe

🔴 Cereal

103 mg oxalate / serving

Avoid

🟡 Cereal

46 mg oxalate / serving

Caution

🟡 Cereal

34 mg oxalate / serving

Caution

🟡 Cereal

25 mg oxalate / serving

Caution

🟡 Cereal

41 mg oxalate / serving

Caution

🟢 Corn

2 mg oxalate / serving

Safe

🟢 Legumes

3 mg oxalate / serving

Safe

🟡 Legumes

53 mg oxalate / serving

Caution

🟢 Legumes

3 mg oxalate / serving

Safe

🟢 Legumes

11 mg oxalate / serving

Safe

🟢 Ovaltine

6 mg oxalate / serving

Safe

🟢 Condiments

5 mg oxalate / serving

Safe

🟢 Coffee Mate

1 mg oxalate / serving

Safe

🟡 Fries

30 mg oxalate / serving

Caution

🟢 Pie Mix

5 mg oxalate / serving

Safe

🟡 Ravioli

31 mg oxalate / serving

Caution

🟡 Ravioli

25 mg oxalate / serving

Caution

🟢 McDonalds

17 mg oxalate / serving

Safe

🟢 McDonalds

11 mg oxalate / serving

Safe

🟢 McDonalds

20 mg oxalate / serving

Safe

🟢 McDonalds

22 mg oxalate / serving

Safe

🟢 Starbucks

13 mg oxalate / serving

Safe

🟡 Wendy's

25 mg oxalate / serving

Caution

🟢 Wendy's

7 mg oxalate / serving

Safe

🟢 Tuna

0 mg oxalate / serving

Safe

🟢 Sardines

4 mg oxalate / serving

Safe

🟢 Anchovy

1 mg oxalate / serving

Safe

❓ Frequently Asked Questions

How many foods are in this category?

There are 48 foods in this category in our database, all with oxalate data from Harvard T.H. Chan SPH (2024).

What's the lowest-oxalate option in this category?

Browse the list below — the cards show oxalate per serving for each food. Safe foods (🟢) are your best bets.

How should I prepare these foods?

Preparation method matters. Boiling and draining can reduce oxalate in many vegetables. Steaming and roasting have less effect. Check individual food pages for specific tips.

Which foods in this category should I avoid?

Scan for the 🔴 markers below. These are the high-oxalate foods in this category. But keep in mind — one high-oxalate food doesn't mean the whole category is off-limits.

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.