Bioidentical hormones vs standard HRT: what is the difference?

Bioidentical vs. Standard HRT

Standard HRT

These are conventional hormone replacement therapy products, which may include:

• Synthetic hormones (like medroxyprogesterone acetate) or hormones derived from animal sources (like Premarin, made from pregnant mare urine)
• FDA-regulated with established safety/efficacy data
• Standardized dosing

Bioidentical Hormones

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

Two main categories:

FDA-Approved Bioidentical Products:

• Estrace (estradiol)
• Prometrium (progesterone)
• Vivelle-Dot (estradiol patch)
• Bijuva (combined pill)
• These have standardized dosing and safety testing

Compounded Bioidentical Hormones:

• Custom-made by compounding pharmacies
• Often marketed as more "personalized"
• NOT FDA-approved individually
• Less quality control oversight

Key Takeaway

The term "bioidentical" is largely a marketing distinction - some FDA-approved standard HRT products are already bioidentical. The FDA-approved versions are generally considered safer due to rigorous testing.

Always consult your doctor or an endocrinologist before choosing, as individual needs vary significantly.