Magnesium therapy has been demonstrated in several studies to be effective in either preventing or treating hearing damage, particularly noise-induced hearing loss, but also in improving hearing loss associated with drug ototoxicity and sudden sensorineural hearing loss. Magnesium therapy has few side effects or contraindications and it is cheap. Magnesium, which easily crosses the hematocochlear barrier, presents neuro- protective and vasodilatory effects, and is able to limit cochlear damage. These observations have led to many investigations, the aim of them being to evaluate the effectiveness of magnesium administration in prevention or treatment in such causes of hearing impairment. Some adults may lack sufficient magnesium in their bodies making them more susceptible to hearing loss. It can be taken alone or given in conjunction with other prescription medications. The majority of studies have shown that magnesium is partly effective. Using magnesium in combination with other agents could improve recovery after hearing loss.