These are not usually what many US clinics follow, but I wanted to show what the guidelines say.
Comparison of U.S. Clinical Guidelines on Hormone Replacement Therapy (HRT) in Women
Multiple U.S. medical organizations—including The Menopause Society (formerly NAMS), ACOG, the Endocrine Society...
Abstract
Menopause hormone therapy (MHT) is the most efficient treatment for symptoms of the acute climacteric syndrome and for efficient prevention of long-term estrogen deficiency. Vaginal administration of low doses of estrogen is a therapy of choice for the treatment and prevention of...