The word bioidentical gets used two different ways, and conflating them is the single biggest source of confusion in menopause care.
The distinction that matters
Bioidentical (molecularly): A hormone that is chemically identical to what the human body produces. 17-beta estradiol and micronized progesterone are bioidentical regardless of who manufactures them.
FDA-approved bioidentical HRT: Commercially available products that use bioidentical molecules. Examples: estradiol patches (Climara, Vivelle-Dot), oral estradiol (Estrace), vaginal estradiol (Estrace cream, Vagifem, Imvexxy), oral micronized progesterone (Prometrium). These are rigorously tested for potency and purity.
Compounded bioidentical hormone therapy (cBHT): A custom formulation — often in creams, troches, or pellets — made by a compounding pharmacy. May be based on salivary hormone testing. Not FDA-tested.
Where the major societies stand
- The Menopause Society and ACOG: Do support FDA-approved bioidentical HRT as first-line therapy when appropriate. Do not recommend routine use of compounded bioidentical hormone therapy.
- Endocrine Society: Aligned — cBHT only for documented allergy to FDA-approved product ingredients or genuinely unavailable dose combinations.
What this directory shows
Providers who prescribe FDA-approved bioidentical HRT (most menopause-specialist physicians) appear with a Bioidentical tag because patients search for the term. Providers who primarily prescribe compounded formulations are still listed — cBHT is legal and widely available — but the tag is the same, and we link back here so the FDA-approved vs. compounded distinction is transparent.