In the HRT section of the NICE guidelines (updated 2022) it says, under the section titled Regimen:
For perimenopausal women, monthly or 3-monthly cyclical regimens may be used.
A 3-monthly regimen may be more suitable for women with infrequent periods or who are intolerant to progestogens. See the section on adverse effects for more information.
Can anyone advise what that means please, as I thought we had to use progesterone every month and couldn't do it over a longer period? They also don't mention which type of progesterone can be used in that way. I'm confused 🤷♂️