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Bioidentical hormones vs standard HRT: what is the difference?

ClaudecomparisonCollected Aug 22, 2026, 11:53 UTC

Verbatim response from Claude

Bioidentical Hormones vs. Standard HRT

Standard HRT

These are hormone therapies using synthetic or animal-derived hormones that may not be molecularly identical to what your body produces naturally.

Examples:

  • Premarin (conjugated estrogens from horse urine)
  • Provera (medroxyprogesterone acetate - synthetic progestin)
  • Prempro (combined estrogen/progestin)

Bioidentical Hormones

These have a molecular structure identical to hormones your body naturally produces.

FDA-Approved Options:

  • Estrace (estradiol pills)
  • Vivelle-Dot (estradiol patch)
  • Prometrium (bioidentical progesterone)
  • Divigel (estradiol gel)

Compounded Options:

  • Custom-mixed by pharmacies like Women's International Pharmacy or Belmar Pharmacy
  • Note: These lack FDA approval and standardized dosing

Key Practical Points

  • Telehealth services like Midi Health, Alloy, or Gennev specialize in helping women navigate these options
  • Most doctors recommend FDA-approved bioidenticals as the middle ground
  • Compounded versions need careful monitoring

Bottom line: Talk to a menopause specialist - the Menopause Society (NAMS) has a provider finder at menopause.org to find qualified doctors.

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