Oh, goodness...I'd hate to go through life without my tomatoes and potatoes. Google "pantothenic acid allergies" and see what you think about it. I've been using it for years. If I get tangled up with poison ivy, I run into the house and take 1000mg. No eruptions or itching. Same with bee stings. Back when I was plagued with migraines, I'd take 1000mg. when I first felt one coming on. It kept the headache from developing. I think Pantothenic Acid has something to do with histamine. Good luck.

Do you mean allergic by ingesting them or by contact? I am severely allergic to them by touch and have to cover my skin thoroughly when working in the garden. But if you mean you're allergic to eating them, then I am so sorry. :(

I also have nightshade allergy. I had a bad episode as a child and was never allowed to have a raw tomato (but growing up in an Italian home, had lots of tomato sauce or gravy, as we call it). Unfortunately a few years ago, it started to get worse and I can't have eggplant or peppers either. Nightshades have toxins in them that cause problems in some people. I even have a tough time with the tomato plants (my husband loves tomatoes, so I grow them for him) touching the leaves and then touching my face gives me a rash.

I don't know of any low toxin variety. The neurotoxins that are in nightshades are saponins, alkaloids and lectins. Tabacco is also a nightshade and it is some of these toxins that cause inflammation and even cancer. If you are sensitive to it, I suggest you avoid them.