Click here to view Dr. Retzler's HormoneSynergy® Longevity BLOG

RetzlerRx Synergy D3K2 PRO with vitamin D3 and K2 MK-7 for bone density, calcium metabolism, heart, and immune support
RetzlerRx® Synergy D3K2 PRO – Bone, Heart & Immune Health Vitamins & Supplements Cardiometabolic & Heart Health Collection HormoneSynergy

Synergy D3K2 PRO | Vitamin D3 5000 IU + K2 MK-7 180 mcg | RetzlerRx®

Regular price
$ 44.95
Sale price
$ 44.95
Quantity must be 1 or more

Synergy D3K2 PRO | Vitamin D3 5000 IU + K2 MK-7 180 mcg

Support your health with RetzlerRx® Synergy D3K2 PRO, a physician-formulated blend of high-potency vitamin D3 (5000 IU) and premium vitamin K2 (180 mcg, MK-7 form). This synergistic combination is designed to support calcium metabolism, bone density, cardiovascular wellness, and immune function.*

Vitamin D3 helps support calcium absorption and immune balance, while vitamin K2 MK-7 helps direct calcium toward bones and teeth while supporting healthy calcium utilization in the body.* Together, they form a science-backed nutrient duo for comprehensive skeletal, cardiovascular, and whole-body wellness support.*

Best For:
  • Bone density and calcium metabolism support*
  • Cardiovascular wellness support*
  • Immune balance support*
  • Individuals seeking combined vitamin D3 and K2 support*
  • Daily softgel support for skeletal and vascular health*

Key Features & Benefits

  • High-Potency Vitamin D3 (5000 IU) – Helps support calcium absorption, bone strength, and immune function.*
  • Premium Vitamin K2 (180 mcg MK-7) – Helps support healthy calcium placement in bones while promoting cardiovascular wellness.*
  • Synergistic Formula – Vitamin D3 and K2 work together to support calcium absorption and utilization.*
  • Doctor Formulated – Developed using principles of functional and longevity medicine.
  • Clean & Pure – Non-GMO, gluten-free, dairy-free, and free from unnecessary additives.
  • Convenient Softgels – Easy-to-take daily support for bone, heart, and immune health.

Key Ingredients

Vitamin D3 is commonly used to support calcium absorption, bone health, immune function, and normal physiological balance.*

Vitamin K2 MK-7 is a bioactive form of vitamin K2 commonly used to support healthy calcium utilization, bone density, and cardiovascular wellness.*

Together, vitamin D3 and K2 provide complementary support for calcium metabolism, helping support healthy bones while also supporting vascular and whole-body wellness.*


Why RetzlerRx®

RetzlerRx® supplements are developed within the HormoneSynergy® Longevity Medicine ecosystem using principles of Evidence-Based Preventive Longevity Medicine. Each formula is selected for ingredient quality, clinical relevance, and real-world patient use within a physician-guided care model.

  • Practitioner-formulated nutritional support
  • Clinically relevant ingredient selection
  • Designed to complement preventive longevity medicine strategies
  • Focused on high-quality, clean-label formulations

Suggested Use

Take one softgel daily with a meal, or as directed by your healthcare provider.

RetzlerRx® Synergy D3K2 PRO is your doctor-formulated, high-potency solution for bone density, heart health, and immune balance.*


Frequently Asked Questions

What does Synergy D3K2 PRO support?

This formula is designed to support calcium metabolism, bone density, cardiovascular wellness, and immune balance.*

Why combine vitamin D3 with vitamin K2?

Vitamin D3 helps support calcium absorption, while vitamin K2 helps support healthy calcium utilization and placement in the body.*

What is MK-7?

MK-7 is a bioactive form of vitamin K2 commonly used to support bone health, calcium metabolism, and cardiovascular wellness.*

Who may benefit from this formula?

Individuals seeking combined support for bone density, heart health, immune balance, and healthy calcium metabolism may benefit from this formula.*

How should I take this supplement?

Take one softgel daily with a meal, or as directed by your healthcare provider.


*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

HormoneSynergy® Longevity Medicine
Portland • Lake Oswego • Oregon
Evidence-Based Preventive Longevity Medicine