@slw7252
Had the same question for my EP when he recommended taking it. There are so many forms of it out there.

I was told for me 400 mg of Magnesium Citrate. I did asked why citrate form. I was told that citrate form was the most easily absorbed into body. I was told by my EP citrate that high amounts of the citrate form can have laxative affect and if that affected me adversely try the Glycimate which was also easily absorbed.

I did not have any issues then or now with digestive and have been taking about 2 years now.

My wife also takes it per her gastronologist to help with her digestion and constipation but takes 600 mg and to take all at night time.

I need to put a caveat here on my EP asking me to try Magnesium Citrate to help with PVCs. I would check with your doctors before adding any supplements as they can contradict other medications or side affects to conditions.

On my wife's side it was her gastronlologist recommending this. She has digestive gastroperis caused by diabetes (she is a 1.5) and her digestive system very slow and a lot of constipation.

Hope this helped!