Well I think the "best and correct dose" is what you feel suits you best. There are no rules, no guidelines about this. Yes you can find on the internet sites that suggest a certain dosage, I guess that's at least a starting point. I believe that whether you're post or pre-op is irrelevant to the dosage that you need. Only when you have achieved a desired level of feminisation should you consider reducing dosage to a "maintenance level". Contrary to popular belief being post-op does not affect your sensitivity to oestrogen; you don't need less to achieve feminisation just because you are producing less testosterone.
This post was edited by Lucy Diamond at February 11, 2012 5:55 PM GMT
How long have you been on hormones? Are you happy with the level of feminisation you have achieved? These factors should affect the dosage that is suitable for you.
I'd strongly recommend switching from Premarin (which carries a high risk) to bio-identical, 17-beta oestrogen (which carries a negligible risk), for example Zumenon, Elleste solo, Estrofem or perhaps Oestrogel. 2, 4, 6mg in tablet form, maybe more, it all depends on the above questions, and your feeling of well-being on said dose. These are ball-park figures to begin with, it's largely trial and error really.
Let us know how you get on.
To thine own self be true.