Is there any danger from sulfites in wine? - The Straight Dope Cecils last comment about sticking to lemon juice should be changed because sulfites are added to many juices including lemon juice to keep them from fermenting. Unless the lemons are fresh squeezed it can trigger the allergy. I know much more about this sensitivity and it’s relation to sulfa which blocks the sulfite oxidation enzyme which turns sulfite back to sulfate.