Yes, sunflower seeds are low histamine. However, there are biogenic amines other than histamine in sunflower seeds, and these build up over time, slowing down how well your body clears histamine. Therefore you should only ever purchase organic sunflower seeds manufactured in the last couple of months. Refrigerate all nuts & seeds in airtight containers after you buy them, to maintain freshness; the same goes for any nut or seed butters made from them. Sunflower seeds are a rich source of selenium, calcium and vitamin E.