Bio identical HRT always seems to cause a bit of confusion I am no expert so hopefully someone will be along soon, are you referring to the compounded creams etc that some pharmacies make up, as far as I know, those are not considered safe to use as they are not really strong enough (according to my gynae) but many of us on this forum are on HRT that is also bio identical as in the gels, patches and the progesterone (Utrogestan) and yes these are available on prescription.