Please note the following from the Prometrium web site:
"PROMETRIUM® is bio-identical to progesterone, which means it is structurally identical to the naturally occurring progesterone in your body. As you can see below, the physical structures of progesterone and PROMETRIUM® are the same. There is no evidence that bio-identical hormones are safer or more effective than other progestogens."
Some people like to disparage the non-bioidenticals, parroting the lines of the current natural drug Svengalis selling their wares to "green" upwardly mobile American housewives. It becomes almost a religion to some. I really don't want to flog the issue, but I get upset when people try to insert some "new age, good feeling" beliefs for good old fashioned science. Here in the US of A we have far too many people who do that on any number of wacko social issues. Look at the Prometrium statement-"no evidence that it is safer or more effective". Who ya gonna believe, the people who make it, stand behind it, and sell it, or someone who "heard something" somewhere and is now a "true believer" who wants to broadcast it on the internet and denounce the heathen bastards who dare to disagree? If and when I am presented with good and sufficient evidence, I would be more than willing to switch.