It shouldn’t be a problem. Sulfa is a refined synthetic isolate. Natural sulfur is a synergistic co-element that is found in lots of natural things. Your body could not exist without it- its the third most abundant mineral in your body next to air and water.
Sometimes allergies indicate you need to clean your liver. Markus suggests using Free-Liver, and drink lots of water. Optional: you can take 2 tablespoons of lecithin granules with each meal.