Hi annie58
You have a right to whichever type of HRT you want! Prempak contains equine (horse) oestrogens and a synthetic progestogen. If you want to take a bio-identical oestrogen ie estradiol, which is in all the other non-equine HRT types and a progestogen that is close to our own as in Femoston - then the doctor should prescribe this. They should not deny you a different type on the grounds of cost, if you insist.
If you are suffering now I would go back and ask for a new prescription (for Femoston) asap to give time to settle down before you go on holiday! It comes in two strengths as you will see from here:
http://www.menopausematters.co.uk/perimeno.phpThe 2/10 is equivalent to the higher dose Prempak you were on before. You would have to try it to see the effect on your periods though.
The reason he says it's safer (on low dose) is because all the research (data now re-analysed) was carried out using the equine oestrogens. Recent research is pointing towards estradiol being associated with lower risks.
Hurdity x