Some of the information I found is at http://www.minniepauz.com/calcium.html
I had seen the coral calcium infomercials, but was suspicious of the claims made and I recently found this news report:
Good Housekeeping Study Shows Claims Are Misleading
Coral calcium is a supplement that makers claim can slow aging. The calcium is taken from coral mined in the waters off Okinawa, Japan.
"Coral calcium is being really marketed to really anyone who has a health problem," said Delia Hammock of Good Housekeeping.
A recent Good Housekeeping study looked in to the claims of an infomercial, and found the advertisement went too far and promised too much.
------------------------------
Here's what I take and why:
I've spent several years now trying to determine what kind of things (vitamins, minerals, supplements) I should be taking to stay healthy. I've never taken hormone replacement and I don't like taking a lot of pills anyway, so I've done a lot of research to find out what was essential for a woman my age. The most obvious is the calcium/magnesium and I had been using a liquid form (or powder in gel caps) to get the quickest absorption. All those HUGE pills are usually "eliminated" from our bodies before the good stuff can be absorbed sufficiently, therefore we're not getting the benefits that we are paying dearly for.
When I finally had a list of everything I felt was important, I was overwhelmed by the number of pills I would have to take! AND the SIZE of the pills was enough to gag an elephant, so when I found New Vision products I was thrilled that I could get all the nutrients I need in a form that would be the most effective. I have been taking this product for a month now and have determined that it's worth passing the information on to you. As you know, I take my recommendations very seriously and after the research I've done on New Vision, including speaking with their research and development department, I'm pleased to suggest that you check this out. I am taking the Essential Vitamins™, Essential Minerals™, Liquid Essentials for Women™ and the Essential Calcium™ with Magnesium and Vit D (it's effervescent!) and everything tastes wonderful!
I was introduced to New Vision products by one of their distributors, Mr. Amir Nabri, who has been extremely helpful in answering my questions and providing extensive information about the products. call him directly at 1-866-840-9501 for personal assistance. Tell him you're a Minnie Pauzer and you'll be treated like the Queen you are.

-----------------------------
Ladies, it has come to the point where we have to research every single report or claim that we hear, especially when it comes to anything that is vital to our health. If we keep each other informed (it's now so easy to post a quick message on this board), then we will eventually be able to keep tabs on what works and what doesn't. Thank you (in advance) for contributing your personal results with certain products or for information on any reports you come across (please always show the source with a link when possible)
This thread is about calcium, but I will try to copy the other threads (black cohosh, avlimil(sp), progesterone cream) from the old message board and put them each on their own thread.
I just believe we have to be a little suspicious (well, maybe a LOT suspicious) when it comes to all the products that are being shoved in our face on a daily basis. These companies have finally figured out the buying power women have and they're pulling out all the stops!