RetzlerRx® Vitamin D3 + K2 | 5000 IU D3 with MenaQ7® MK-7

RetzlerRx® Vitamin D3 + K2 combines vitamin D3 (cholecalciferol) with vitamin K2 (MK-7) to support healthy calcium metabolism, bone strength, and cardiovascular wellness. This advanced formula delivers 5,000 IU of vitamin D3 alongside highly bioavailable vitamin K2 to help support balanced calcium utilization throughout the body.

Vitamin D3 helps support calcium absorption and immune health, while vitamin K2 helps activate proteins involved in directing calcium into bones and teeth while maintaining healthy vascular balance. Together, these nutrients are commonly paired to support skeletal health and proper mineral metabolism.

Why Vitamin D3 + K2 Work Together

Vitamin D3 helps the body absorb calcium from food, while vitamin K2 helps guide that calcium toward bones and teeth. This complementary relationship makes the combination a widely used nutritional strategy for supporting bone health and calcium metabolism.

• Supports Bone Strength – Helps support bone mineralization and skeletal integrity.
• Supports Calcium Metabolism – Helps maintain balanced calcium distribution in the body.
• Supports Cardiovascular Wellness – Helps support normal vascular calcium balance.
• Supports Immune Function – Vitamin D plays an important role in immune system regulation.

Key Benefits

• Vitamin D3 5000 IU – Provides the same form of vitamin D naturally produced in the body from sunlight exposure.
• Vitamin K2 MK-7 – Highly bioavailable form used to support calcium metabolism.
• Synergistic Nutrient Pairing – Designed to support both calcium absorption and utilization.
• Doctor-Formulated – Developed within a functional and longevity medicine framework.
• Clean Formula – Free from gluten, soy, dairy, and artificial preservatives.

What Makes It Different

RetzlerRx® Vitamin D3 + K2 combines two complementary nutrients in their most commonly used supplemental forms—vitamin D3 (cholecalciferol) and vitamin K2 (MK-7). Vitamin D3 is the same form of vitamin D naturally produced by the body following sunlight exposure, while MK-7 provides a longer-acting form of vitamin K2.

This pairing is widely used in nutritional strategies designed to support bone health and balanced calcium metabolism.

Who It May Be Best For

• Individuals focused on bone density and skeletal health
• Adults seeking balanced calcium metabolism support
• Individuals interested in cardiovascular wellness
• People with limited sun exposure who want vitamin D support

Suggested Use

Follow label directions or guidance from your healthcare professional.

Important Notes

Vitamin D and K supplementation works best when used alongside balanced nutrition, weight-bearing exercise, and appropriate medical evaluation when needed.

Practitioner-grade supplement available through HormoneSynergy® Longevity Medicine in Portland and Lake Oswego, Oregon. RetzlerRx® products are part of an evidence-based preventive longevity medicine approach. Nationwide shipping available.

Frequently Asked Questions

Why combine vitamin D3 and vitamin K2?

Vitamin D3 helps increase calcium absorption while vitamin K2 supports proteins that help direct calcium toward bones and teeth.

What form of vitamin D is used in this supplement?

This formula uses vitamin D3 (cholecalciferol), the same form of vitamin D naturally produced in the skin following sunlight exposure.

What is vitamin K2 MK-7?

Vitamin K2 MK-7 is a bioavailable form of vitamin K that supports proteins involved in calcium metabolism and bone mineralization.

Who may benefit from vitamin D3 and K2 supplementation?

Individuals interested in bone health, calcium metabolism, and cardiovascular wellness may consider vitamin D3 and K2 supplementation as part of a balanced nutrition strategy.