Right now I am taking 400 mg/day magnesium malate. I've read a lot of information from different sources that said that magnesium can help with anxiety, depression, insomnia, muscle pains, heart palpitations, etc. and I decided to try it. I was taking 600 mg/day and it just gave me more bowel problems, which I already have. I'm really thinking that the 400 mg./day is helping me because I can sleep better and my muscles don't hurt as much. It's not 100%, but it's an improvement. All I want at this point is progress. It took my Dr. this long to realize that a lot of people are deficient in Vitamin D3, something I would have never considered. With the average diet and the soil quality, it makes sense to me that other deficiencies are not outside the realm of possibility. And I discovered that most multi-vitamins have magnesium oxide, which isn't very bioavailable. I've read that magnesium glyconate is the best.