Discover RetzlerRx® Longevity Medicine Supplements, a collection of functional medicine, physician-formulated formulas designed to support optimal health, vitality, and aging well. Each product features clinical-grade nutrients developed by Dr. Kathryn Retzler and her medical team, with nationwide USA shipping available for your convenience.

120 products
  • RetzlerRx® Intest-Immune – Hyperimmune Egg with IgY Max®
    Regular price
    $ 49.95
    Sale price
    $ 49.95
  • Herbal Laxative – Gentle, Natural Digestive Support
    Regular price
    $ 24.95
    Sale price
    $ 24.95
  • Digestive Enzymes | Digestive Health & Nutrient Absorption Support
    Regular price
    $ 48.99
    Sale price
    $ 44.05
  • RetzlerRx® DHEA 10 mg – Gentle Hormonal Balance & Vitality Support
    Regular price
    $ 24.95
    Sale price
    $ 24.95
  • Brain Calm Extra Strength – Suntheanine® Stress & Focus Support
    Regular price
    $ 94.99
    Sale price
    $ 89.95
  • RetzlerRx™ Ashwagandha w/ Shoden® – High-Potency Adaptogen
    Regular price
    $ 34.95
    Sale price
    $ 34.95
  • RetzlerRx® Adrenal B Synergy – Adaptogen & B Vitamin Stress Support
    Regular price
    $ 65.99
    Sale price
    $ 64.95
  • Active Folate B12 Synergy 1700 mcg L-5-MTHF + 2500 mcg B12 | Quick Dissolve Cherry Tablets | Premium RetzlerRx Supplement
    Regular price
    $ 24.95
    Sale price
    $ 24.95