Originally Posted by mrsd

The strengths you post Jarrett are for 2 tablets. The general guideline is for people to take up to 1/2 the RDA in a supplement...this assumes you are getting some from food. Since the RDA for adults is about 400mg that would be 200 if you think you really need it. I always suggest people start at one tablet of Slow Mag twice a day in divided doses, since there is active transport in the intestine and you don't want to overload it at one time.
I was just at Costco getting my jinxed blood pressure RX filled and they had generic slow-mag (Mag64) for $4.87 /60....that is 2 dollars less than WalMart where I usually get it.
I use the generic typically to save $$.

If you feel good at 2 a day, then that is all you need. I wouldn't go over 4 a day however. Using high dose magnesium should be monitored by a doctor, esp if you have any decreased kidney functions.