Polyethylene glycol 3350
"My constipation caused a rectal fissure.  The tear would re-open every time I had a bowel movement.  I'd been on various stool softeners and laxatives trying to heal the fissure, but nothing worked until I started on Miralax.  Now the fissure is healed and I am pain free.  So very thankful.  Just wondering why I had to go to a colon specialist before I found out about this product.  Why didn't the other doctor I went to suggest this product?"