Since chelated magnesium is mostly chelate and little magnesium, it appears replacing my daily 750 mg of chelated magnesium with magnesium oxide might be the way to go. Based upon your information, my daily 1550 mg dose might be lowered to something far less of straight magnesium oxide - maybe about 1000 mg. {OH!, I errored in my previous post. I stated my daily regimen was 1050 mg magnesium. I really meant: 1550 mg - 1050 mg before breakfast and 500 mg before supper}. I shall begin experimenting with lesser amounts of {only} magnesium oxide.

I do have one remaining question: From reading the magnesium thread you provided, magnesium citrate is touted a 'a laxative.' Also, magnesium citrate is described as possessing a higher absorption rate than magnesium oxide. I've been led to equate a lower absorption rate with a having a better 'laxative effect.'

Since magnesium oxide appears to have a lower absorption rate, my simple reasoning would conclude that magnesium oxide would function better as a laxative than magnesium citrate?

Thanks ~ james