Used as a fertilizer in agriculture to correct magnesium deficiency in soil, promoting healthy plant growth and chlorophyll production. Commonly applied in horticulture for crops like tomatoes, potatoes, and roses. Employed in medicine as a laxative to relieve constipation and as an anticonvulsant for treating seizures in eclampsia during pregnancy. Also used intravenously to manage arrhythmias and severe asthma attacks. In healthcare, added to bathwater to soothe sore muscles and reduce inflammation, though evidence for transdermal absorption is limited. Utilized in brewing and fermentation processes to adjust water hardness and supply essential nutrients for yeast. Serves as a drying agent in organic synthesis due to its hygroscopic nature, effectively removing trace water from organic solvents. Used in aquariums and aquaculture to maintain proper magnesium levels in water, supporting marine life and coral health.