Magnesium citrate is an osmotic laxative commonly used for bowel cleansing and treatment of constipation. Here’s a detailed breakdown:
- Mechanism of action:
- Magnesium citrate is a saline laxative → draws water into the intestinal lumen by osmotic effect
- Increases intraluminal volume → stimulates stretch receptors in the intestinal wall → promotes peristalsis and bowel evacuation
- Onset of action:
- Oral: 0.5 to 6 hours (depending on dose and individual response)