Magnesium that makes you poop primarily acts as an osmotic laxative by drawing water into the intestines to soften stool and increase bowel movement. The main types of magnesium used for this effect are:
- Magnesium citrate
- Magnesium sulfate
- Magnesium hydroxide (milk of magnesia)
- Magnesium oxide (less absorbed, but also works as a laxative)
Magnesium citrate, sulfate, and hydroxide usually start working within 30 minutes to 6 hours. They increase water content in the intestines and stimulate intestinal muscles to help move stool. Magnesium oxide increases osmotic pressure in the intestines and softens hard stools by pulling water into the bowel.
In summary, magnesium citrate, sulfate, and hydroxide are commonly used for their laxative effects that help relieve constipation by making you poop. Magnesium oxide also works but is slower absorbed and tends to be gentler.
