Treatment of hypomagnesemia depends on the degree of deficiency and the clinical effects. Replacement by mouth is appropriate for people with mild symptoms, while intravenous replacement is recommended for people with severe effects. Numerous oral<unk>  preparations are available. In two trials of<unk>  oxide, one of the most common forms in<unk>  dietary supplements because of its high<unk>  content per weight, was less bioavailable than<unk>  citrate, chloride, lactate or aspartate.<unk>  citrate has been reported as more bioavailable than oxide or amino-acid chelate forms. Intravenous<unk>  sulfate (MgSO4) can be given in response to heart arrhythmias to correct for hypokalemia, preventing pre-eclampsia, and has been suggested as having a potential use in asthma. Food Food sources of<unk>  include leafy green vegetables, beans, nuts, and seeds.
Magnesium deficiency
Fluorine deficiency
Boron deficiency 
Fluoride toxicity
Selenium deficiency
Thiamine deficiency
Copper deficiency
Vitamin D toxicity