Magnesium is present in most foods, especially green leafy vegetables, nuts, beans, meat & fish. Processed foods, dairy products & refined gains are, however, low in magnesium. Magnesium deficiency is characterised by fatigue, mental function, muscle cramps, insomnia, loss of appetite & a tendency towards stress related symptoms. Organic magnesium compounds, such as magnesium amino acid chelate, are better absorbed, utilised & tolerated than inorganic forms (oxides, chlorides, hydrochlorides). Inorganic forms are likely to cause diarrhoea at higher doses whereas organic forms generally do not.