Nightshade foods: the complete list
A botanical family - not a category of 'bad' foods. Here's the full list, and an honest look at the science.
"Nightshades" sounds ominous, and the wellness internet treats the word that way. It's worth slowing down, because a nightshade is simply a member of a botanical plant family - and that family includes some of the most-eaten vegetables on earth.
Here's the complete list of nightshade foods, and an honest account of what the science does and doesn't say.
What nightshades are
Nightshades are plants in the Solanaceae family. The everyday edible ones are potatoes, tomatoes, peppers (bell and chilli), eggplant, and a few others like tomatillos and goji berries.1
What unites them chemically is a group of compounds called glycoalkaloids - solanine in potatoes, and related compounds in the others. Glycoalkaloids are part of the plant's natural defence. At high doses they're genuinely toxic - which is the real, well-documented reason you shouldn't eat green or sprouted potatoes - but the amounts in normal, properly-stored produce are low, and most of a potato's glycoalkaloid sits in the skin.1
The honest part: a chronic, low-level "nightshade intolerance" - distinct from acute glycoalkaloid toxicity - is not a well-established medical diagnosis. Few studies have directly linked normal nightshade consumption to negative health outcomes, and for most people these are nutritious foods.2 Some people with inflammatory conditions report feeling better avoiding them, but the evidence there is largely anecdotal.
The nightshade foods
Below is the full list of nightshade foods - drawn directly from the Triggerbites ingredient database.
A common point of confusion: black and white pepper are not nightshades. Peppercorns come from an entirely unrelated plant family - it's only capsicum peppers (bell and chilli) that are Solanaceae. The thread through the real list is potato, tomato, peppers, eggplant and the sauces and spice blends made from them.
A balanced way to think about it
If you suspect nightshades affect you, the sensible approach is the same as for any contested trigger: test it on yourself rather than assume. Nightshades are healthy foods for the great majority of people, and cutting four nutritious vegetable groups on the strength of an internet list has a real cost.
Finding your pattern
The honest way to know is to track: which nightshade foods you ate, how much, the symptoms that followed and their timing, and - crucially - whether removing them and reintroducing them genuinely changes anything for you.
Where Triggerbites fits in
This list comes straight from the food data inside Triggerbites, which tags every ingredient for nightshade content alongside 20+ other compounds.
So rather than guessing from a generic list, you can log your meals and symptoms, see whether nightshades actually correlate with how you feel, and run a proper remove-and-reintroduce test - your own evidence, not the internet's.
Triggerbites Features
- Log like you're texting: plain language, not database searches
- Automatic ingredient breakdown: we parse your entries into the basic components so you don't have to
- Built-in chemical tagging: FODMAP, histamine, salicylates, oxalates ++ more compounds flagged automatically
- Multi-window pattern recognition: correlations across same-day, next-day, and multi-day windows
- Reports you can share: something to take to a doctor or dietitian
It takes seconds a day, and it replaces a scary word with your own data.
For related pieces, see how to find your food triggers and food intolerance tests: what works and what doesn't.
Live, love, log. 🧡
References
Article References and Citations
- WebMD: "Nightshade Vegetables: What They Are and Who Should Avoid Them" - https://www.webmd.com/diet/what-to-know-about-nightshade-vegetables
- GoodRx Health: "What Are Nightshade Vegetables and Should You Avoid Them?" - https://www.goodrx.com/well-being/diet-nutrition/nightshade-vegetables