I recommend Magnesium Chloride as the least expensive type of magnesium. You can buy the flakes in bulk and make your own 'mgnesium oil' with pure water. Capsules are better than tablets generally. Avoid any manufacturers using binders, flow agents and fillers. I use Perque products and Ancient Purity products.
For good magnesium join the Secret Health Club: https://www.secrethealthclub.com and go to the products page
http://www.clivedecarle.com
