I don't have a true sulfite/sulfa allergy. When I'm flaring, my gut microbiome shifts towards hydrogen sulfide producers, as it does for most of us. Those corrode the bowel wall and increase transit time. So adding more sulfa to the diet, especially from synthetic supplements, feeds those buggers big time. During remission periods, sulfa/sulfite doesn't bother me at all.
This is what I found @healthline, appreciate your thoughts on this, Thank you!
A sulfur-rich diet may worsen symptoms in those with ulcerative colitis (UC) or Chron’s disease (CD) — two inflammatory bowel diseases that cause chronic inflammation and ulcers in the gut.
Emerging research suggests that sulfur-rich foods may help a specific type of sulfate-reducing bacteria (SRB) thrive in your gut. These bacteria release sulfide, a compound thought to break down the gut barrier, causing damage and inflammation (7Trusted Source, 8Trusted Source).
That said, not all sulfur-rich foods may have the same effect. For instance, while a diet rich in sulfur-containing animal products and low in fiber may raise SRB levels, one rich in sulfur-containing vegetables appears to have the opposite effect (8Trusted Source).
Moreover, many factors other than the sulfur content of foods may influence the balance of gut bacteria. Therefore, more research is needed before strong conclusions can be made."