All I can say about mag is the only side effect was some looser stool. (sorry TMI lol) But that was not really a problem as some meds I was on made me kinda constipated, so I needed the help.

If it is a prob for you, try taking the mag every other day. I do not believe it builds up where it can hurt you, I'm sure I read excess is released through urine.

My PCP is well-read on supps and fully supports my use of the ones I take - a lot of docs just do not research them, they only advise you to use meds.

My doc uses supps and green tea himself (he's a cardiologist ) - he is approx 80 yrs old and still working, healthy, getting around fine, so I listen to what he says.