8 Supplements to Be Careful With if You Have Crohn's Disease - Yahoo Health

What To Know

This article lists eight types of supplements that people with Crohn’s disease should discuss with their gastroenterologist before trying.

It explains potential harms (for example, herbal laxatives can cause cramping and may worsen an undiagnosed bowel obstruction; high‑dose vitamin C and some magnesium forms can trigger loose stools) and notes situations where medical treatment or alternatives (like intravenous iron instead of oral pills) may be preferred.

The piece names specific supplement classes to be cautious about — laxative herbs, high‑dose vitamin C, some forms of magnesium, oral iron, fiber supplements, probiotic supplements, immune‑stimulating herbs, and mushroom blends — and gives practical points about why each might cause GI symptoms or interact with disease activity or medications.

It emphasizes talking with your gastroenterology care team, checking blood tests before supplementing (iron, magnesium), and choosing product types carefully (eg, magnesium glycinate or psyllium husk may be better tolerated).