how long does it take milk of magnesia to work

Milk of magnesia typically starts working relatively quickly, usually within 30 minutes to 6 hours after ingestion. It works by drawing water into the intestines, softening the stool, and helping stimulate bowel movements. Because of this timing, it is often recommended to be taken at bedtime to have an effect by the next morning. The timeframe can vary depending on the individual's response and the cause of constipation, but relief generally occurs within this range.