Lax-A-Day is an osmotic laxative. That means that it works with your body to retain water in your stool, softening it so that it can move more easily through your system. This process gently increases the frequency of your bowel movements.
The Lax-A-Day difference. Lax-A-Day is gentle on the digestive tract and works by increasing water retention in your stool.
2 to 4 days. Lax-A-Day generally takes 2 to 4 days to produce a bowel movement.