I use magnesium mostly at night. Exceptions are muscle/joint flares during the day. (mostly neck and jaw area). These latter seem to crop up in the day time for me.

90 mg of mag glycinate is not very much. But I have found that any cellulose additive to food (yes, shredded cheese has this), acts like a laxative for me. I have to avoid foods with gums and cellulose-type additives, as they loosen me up most of the time.

I have always been sensitive to oral mag supplements. This is why I like the lotion.

Some foods are high in magnesium. Almonds -- 3oz have 270mg, and beans and lentils are good sources.
http://nutritiondata.self.com/facts/...roducts/4338/2