I started taking magnesium supplements when I developed severe symptoms of magnesium deficiency. Those symptoms ranged from facial tics and leg & foot cramps (merely annoying), to cardiac arrythmias (life-threatening). I wanted a supplement that would be readily absorbed yet contained several forms of magnesium to maximize the benefits.
When I found Mag-Key I knew it was exactly what I was looking for. It contains four of the most easily assimilated magnesium-amino acid chelates. When I take it every day I have none of the symptoms.
I've read recently that 80-85% of all US residents are magnesium-deficient! The soil our food is grown in is becoming depleted of magnesium by modern (Big-Ag) farming practices. Better get some for yourself today!