🍅 Nightshade Vegetables

Nightshade family vegetables. Based on Harvard T.H. Chan SPH oxalate data (2024).

43 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
35 foods
81%

🟡 Caution
8 foods
18%

🔴 Avoid
0 foods
0%

🍽️ Foods in This Collection

🟡 Eggplant

26 mg oxalate / serving

Caution

🟢 Pepper

15 mg oxalate / serving

Safe

🟢 Pepper

11 mg oxalate / serving

Safe

🟡 Potato Salad

26 mg oxalate / serving

Caution

🟢 Potato

16 mg oxalate / serving

Safe

🟢 Potato

10 mg oxalate / serving

Safe

🟡 Potato

29 mg oxalate / serving

Caution

🟡 Potato

36 mg oxalate / serving

Caution

🟢 Potato

15 mg oxalate / serving

Safe

🟢 Potato

18 mg oxalate / serving

Safe

🟡 Potatoes

32 mg oxalate / serving

Caution

🟢 Potatoes

20 mg oxalate / serving

Safe

🟢 Tomato

17 mg oxalate / serving

Safe

🟢 Tomatoes

11 mg oxalate / serving

Safe

🟢 Tamarillo (tree tomato) raw

20 mg oxalate / serving

Safe

🟢 Flour

1 mg oxalate / serving

Safe

🟢 Juice

12 mg oxalate / serving

Safe

🟢 Juice

23 mg oxalate / serving

Safe

🟢 Condiment

1 mg oxalate / serving

Safe

🟢 Herbs and Spices

12 mg oxalate / serving

Safe

🟢 Herbs and Spices

1 mg oxalate / serving

Safe

🟢 Herbs and Spices

0 mg oxalate / serving

Safe

🟢 Peppers)

1 mg oxalate / serving

Safe

🟢 Herbs and Spices

6 mg oxalate / serving

Safe

🟢 Herbs and Spices

3 mg oxalate / serving

Safe

🟢 Herbs and Spices

2 mg oxalate / serving

Safe

🟢 Peppers

1 mg oxalate / serving

Safe

🟢 Peppers

22 mg oxalate / serving

Safe

🟢 Tomato Paste

3 mg oxalate / serving

Safe

🟢 Chips

18 mg oxalate / serving

Safe

🟡 Chips

37 mg oxalate / serving

Caution

🟢 Cookies

11 mg oxalate / serving

Safe

🟢 Potato Flakes

2 mg oxalate / serving

Safe

🟢 Sauce

9 mg oxalate / serving

Safe

🟡 Soup

40 mg oxalate / serving

Caution

🟡 Herbed Chicken without herbed potatoes

39 mg oxalate / serving

Caution

🟢 Tomato juice

2 mg oxalate / serving

Safe

🟢 Potato chips

2 mg oxalate / serving

Safe

🟢 Potato starch

0 mg oxalate / serving

Safe

🟢 Tomato paste

2 mg oxalate / serving

Safe

🟢 Tomato puree

2 mg oxalate / serving

Safe

🟢 Sun-dried tomatoes

2 mg oxalate / serving

Safe

🟢 Roasted red peppers

1 mg oxalate / serving

Safe

❓ Frequently Asked Questions

How many foods are in this category?

There are 43 foods in this category in our database, all with oxalate data from Harvard T.H. Chan SPH (2024).

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.

Are these foods generally safe for kidney stones?

It depends on the specific food — even within a category, oxalate levels vary widely. Some are very safe, others need caution. Check individual food pages for specific numbers.

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.