Hope you had a great Christmas. I ran into "jo3" Jean in Austin at the LLMD. It was great meeting her. We'll all have to get appointments on the same day & meet!
As I'm sure you know, that in the past, physicians received scant education about nutrition.
Any time-released pill is hard on the liver. I would never take a time-released Niacin or magnesium, for that matter. That's my personal preference.
Actually, only the water soluble vitamins like B & C pass through the body quickly.
Any nutrition book will warn about taking excessive doses of the fat soluble vitamins, A & D as they are stored in the body. Vitamin E is somewhat stored within the body.
Minerals on the other hand take a long time to build your reserves. But, Marnie is right, if you take minute amounts of liquid Mg Citrate, then it does leave the body within 2 hours.
I keep a bottle of Marnie's Mg. Citrate in the refrigerator for pain. It works so fast. My whole family likes it.
But for daily use, I usually use the
Magnesium Citrate Capsules 170mg by Nutricology for Bb; directions say take 3 times daily.
Magnesium Taurate capsules by Cardiovascular Research LTd. for very mild, cell wall stabilizer; good for heart, nerves & eyes.
Magnesium Maleate for fibromyalgia - huge caplet.
The biggest problem with magnesium for me is timing it 2 hours away from ABX.
Marnie's information is wonderful about Mg.
Also, George Eby's (supposedly invented the zinc lozenge for colds) website is massive. It has a great deal of info on Mg.
It's at: www.coldcure.com
Anyway, those are my favorite magnesium products.