my endocrinologist prescribed it but typically, they do not prescribe HRT unless you can find an open minded progressive doc. He happened to be well versed in hormones because he was a specialist in treating trans people. Once I explained why I felt it was my best option due to my autoimmune issues, he agreed to it at lowest dose, shortest duration. I'm 5 years into using it and now use an integrative gynecologist who is very knowledgeable to prescribe.