how long does it take for milk of magnesia to work

Milk of magnesia typically takes between 30 minutes to 6 hours to work after ingestion. It acts as a laxative by drawing water into the bowels, softening the stool, and helping produce a bowel movement within this timeframe. It is often recommended to take it before bedtime so it can work overnight, leading to a bowel movement in the morning. However, the exact time can vary depending on the individual's condition and other factors.