Dr. Kathryn Retzler and HormoneSynergy® teamed up with what we believe to be the highest quality supplement manufacturers in the United States to make sure you receive unsurpassed, quality formulas that are safe, affordable and effective.

All HormoneSynergy®  Private Label and Brand name supplements are used by Dr. Retzler in her private practice.

OUR MANUFACTURERS

All private label supplements distributed to patients or customers by HormoneSynergy®  are manufactured by companies that only sell to licensed healthcare providers and follow strict quality control guidelines.

• Xymogen  - 
• Metagenics - 
• Ortho Molecular Products - 
• Thorne Research - 
• Sabinsa Corporation  -