Citrate of Magnesia is used primarily for what purpose?

Citrate of Magnesia is primarily used as a laxative. It works by drawing water into the intestines, which helps to stimulate bowel movements and relieve constipation. This osmotic action makes it effective for individuals requiring a quick laxative effect, particularly in situations like preparing for medical procedures or treating occasional constipation.

In addition to its laxative properties, it can also have a role in managing seizures as an adjunct therapy, particularly in patients with convulsions. This aspect makes it suitable for inclusion in the broader category of anti-convulsants, highlighting its versatility in both the gastrointestinal and neurological contexts.

The other options provided do not align with Citrate of Magnesia's primary uses. Anti-psychotics, treatments for overactive bladder, and anti-hypertensives involve entirely different classes of medications and mechanisms of action, which do not relate to the properties or applications of Citrate of Magnesia.