Magnesium citrate

Definition

Magnesium citrate is a saline laxative used to treat occasional constipation. It works by attracting water into the intestines, which helps to induce bowel movements.

5 Must Know Facts For Your Next Test

1. Magnesium citrate typically produces a bowel movement within 30 minutes to 6 hours.
2. It should be used with caution in patients with renal impairment due to potential for hypermagnesemia.
3. Common side effects include abdominal discomfort, cramping, and diarrhea.
4. It is contraindicated in patients with intestinal obstruction or perforation.
5. Magnesium citrate can interact with certain medications, such as tetracyclines and fluoroquinolones, reducing their effectiveness.

Review Questions

• How does magnesium citrate work as a laxative?
• What are common side effects of magnesium citrate?
• Why should magnesium citrate be used cautiously in patients with renal impairment?

Related terms

Polyethylene glycol (PEG): An osmotic laxative that retains water in the stool to soften feces and increase bowel movements.

Docusate sodium: A stool softener that allows water and fats to penetrate the stool, making it easier to pass.

Bisacodyl: A stimulant laxative that increases peristalsis by directly stimulating the enteric nerves.