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Take the Free HormoneSynergy® Optimal Aging Questionnaire What Diet Is Right For you? Free Assessment. Is HormoneSynergy® the Right Fit for You? The HormoneSynergy® Philosophy Medicine, Not Marketing What Actually Moves Longevity Metrics What to Look For in a Longevity Clinic Insurance is Not Healthcare Social Connection & Longevity Questionnaire Estrogen Metabolism Assessment Hair Loss Assessment Estimate Your Body Fat Hologic DEXA Results Guide Carotid Ultrasound + CIMT Results Guide
Longevity Guide

Longevity Medicine Resource Library Metabolic Health Preventive Cardiology Brain Health Hormone Transitions Sleep and Recovery Gut Health and Microbiome Inflammation What Supplements Do I Need? Mental Health and Longevity Medicine Environmental Health & Exposure, Detoxification and Liver Health Food Quality and Environmental Exposure
Concierge Longevity Medicine All HormoneSynergy Services Preventive Cardiology Cleerly® Testing - Coronary CT Angiography with AI Bioidentical Hormone Therapy Testosterone Therapy for Men and Women Weight Loss for Longevity Program DEXA Bone Density, Visceral Fat and Muscle Scan Carotid Artery Ultrasound CNS Vital Signs Neurocognitive Testing SECA Body Impedance Analysis

Non-Concierge Services Cleerly® Testing - Coronary CT Angiography with AI Weight Loss for Longevity Program DEXA Bone Density Scan with Visceral Fat Analysis Carotid Artery Ultrasound SECA Body Impedance Analysis
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Take the Free HormoneSynergy® Optimal Aging Questionnaire What Diet Is Right For you? Free Assessment. Is HormoneSynergy® the Right Fit for You? The HormoneSynergy® Philosophy Medicine, Not Marketing What Actually Moves Longevity Metrics What to Look For in a Longevity Clinic Insurance is Not Healthcare Social Connection & Longevity Questionnaire Estrogen Metabolism Assessment Hair Loss Assessment Estimate Your Body Fat Hologic DEXA Results Guide Carotid Ultrasound + CIMT Results Guide

Longevity Guide

Longevity Medicine Resource Library Metabolic Health Preventive Cardiology Brain Health Hormone Transitions Sleep and Recovery Gut Health and Microbiome Inflammation What Supplements Do I Need? Mental Health and Longevity Medicine Environmental Health & Exposure, Detoxification and Liver Health Food Quality and Environmental Exposure

Care

Concierge Longevity Medicine

All HormoneSynergy Services Preventive Cardiology Cleerly® Testing - Coronary CT Angiography with AI Bioidentical Hormone Therapy Testosterone Therapy for Men and Women Weight Loss for Longevity Program DEXA Bone Density, Visceral Fat and Muscle Scan Carotid Artery Ultrasound CNS Vital Signs Neurocognitive Testing SECA Body Impedance Analysis

Non-Concierge Services

Cleerly® Testing - Coronary CT Angiography with AI Weight Loss for Longevity Program DEXA Bone Density Scan with Visceral Fat Analysis Carotid Artery Ultrasound SECA Body Impedance Analysis

About

What is HormoneSynergy? Who We Are Testimonials FAQ

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RetzlerRx® Longevity Medicine Supplements
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Gut Health, Histamine & Probiotics
Cardiometabolic & Heart Health
HormoneSynergy® Nutrition & Diet Guides.
Muscle, Joint & Bone Support
Men’s Health
GLP-1 Weight Loss for Longevity®
Hormone Support & DHEA
Inflammation and Joint
Women’s Health
Fish Oil & Omega-3 Fatty Acids
MTHFR Methylation Support
Adrenal Support
Researched Nutritionals®
Microbiome Labs
Pendulum® Life

HormoneSynergy® Clinic

9 Monroe Parkway, Suite 260
Lake Oswego, OR 97035

503-230-7990 Office
503-230-1887 FAX

Longevity Guide

Longevity Medicine Resource Library Metabolic Health Preventive Cardiology Brain Health Hormone Transitions Sleep and Recovery Gut Health and Microbiome Inflammation What Supplements Do I Need? Mental Health and Longevity Medicine Environmental Health & Exposure, Detoxification and Liver Health Food Quality and Environmental Exposure

Care

Concierge Longevity Medicine Non-Concierge Services

About

What is HormoneSynergy? Who We Are Testimonials FAQ

© 2026 HormoneSynergy® / RetzlerRx®. All rights reserved. Website content and educational materials may not be reproduced, modified, rebranded, distributed, published, sold, or used professionally or commercially without prior written permission. Attribution alone does not authorize professional or commercial use.

Copyright and Trademark Notice

HormoneSynergy® is a federally registered trademark associated with HormoneSynergy® Clinic LLC and HormoneSynergy Inc., founded by Dr. Kathryn Retzler. The HormoneSynergy® name has been used in commerce since 2006 in connection with medical services, longevity programs, educational services, health and wellness products, and physician-formulated nutritional supplements. U.S. Reg. Nos. 3,321,488; 4,997,505; and 4,997,943.

RetzlerRx® is a federally registered trademark used in connection with online retail services for holistic health and wellness goods. U.S. Reg. No. 7,265,001.

Trademark protection is not limited to the exact capitalization, spelling, spacing, punctuation, or visual presentation of these marks. Unauthorized use of confusingly similar variations, including HormoneSynergy, Hormonesynergy, Hormone Synergy, Hormone-Synergy, RetzlerRx, or related domain names, social-media handles, product names, clinic names, logos, or branding, may constitute trademark infringement or falsely imply affiliation, authorization, sponsorship, or endorsement.

HormoneSynergy® Clinic LLC prescribes hormones only within the context of a comprehensive treatment plan. Hormones are not prescribed to individuals with a history of illegal steroid use, those seeking isolated improvements in athletic performance, or bodybuilders. No medications or hormones are dispensed without an in-office consultation, comprehensive medical evaluation, laboratory testing, a prescription, and appropriate follow-up protocols.

HormoneSynergy® Clinic LLC does not accept Medicare, Medicaid, or TRICARE; does not participate with insurance providers or accept insurance reimbursement; and does not profit from laboratory testing. The clinic does not prescribe growth hormone for anti-aging purposes.

The information provided on this website is intended to support, not replace, the relationship between a patient or website visitor and a qualified healthcare professional. Consult a licensed medical professional for diagnosis and evaluation of symptoms or health conditions.

Statements on this website have not been evaluated by the United States Food and Drug Administration. Information about HormoneSynergy® protocols, nutritional supplements, products, labels, or packaging is provided for educational purposes only and is not a substitute for professional medical advice. Always consult a licensed healthcare professional before beginning a diet, exercise, supplementation, hormone, or medication program or if you have or suspect a health condition.

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