Designs for Health Vitamin D Supreme - Vitamin D3 5000 IU with Vitamin K2 MK-4, K1, and GG - Bone and Immune Support (60 Capsules)

For those seeking comprehensive support for bone density and immune function, the pairing of vitamin D3 and vitamin K2 is a well-researched choice. Vitamin D Supreme from Designs for Health offers a clinically relevant dose of vitamin D3 (5000 IU) with a unique blend of vitamin K1 and vitamin K2 in the premium MK-4 form, plus the complementary compound geranylgeraniol (GG). This synergistic formula is designed to support normal calcium utilisation, cardiovascular health, and immune system balance.

What to Look For in a D3 + K2 Supplement

When selecting a D3 and K2 supplement, consider the dosage ratio, form of K2, and additional ingredients. Typical research-backed doses range from 1000–5000 IU of D3 and 45–100 mcg of K2 as MK-7, but MK-4 may require higher doses (1000–5000 mcg) due to its shorter half-life. This product use 2000 mcg of MK-4 plus K1, providing both rapid and sustained activity. Look for supplements from reputable brands that undergo third-party testing for purity and potency. Designs for Health is the #1 practitioner supplement brand recommended by functional medicine professionals, reflecting its commitment to quality.

Key Health Benefits

• Bone Health: Vitamin D3 contributes to the maintenance of normal bones by supporting calcium absorption, while vitamin K2 helps incorporate calcium into the bone matrix.
• Cardiovascular Health: By activating matrix GLA protein (MGP), vitamin K2 helps maintain normal calcium balance in arteries, promoting arterial flexibility and normal cardiovascular function.
• Immune Support: Vitamin D3 contributes to the normal function of the immune system and helps maintain a balanced immune response.
• Healthy Ageing: Adequate vitamin D levels are associated with healthy ageing. The added GG (geranylgeraniol) supports the body’s natural production of CoQ10 and vitamin K-dependent proteins, which decline with age.

Why Take Vitamin D3 and K2 Together?

Vitamin D3 and vitamin K2 work as a team to manage calcium in the body. Vitamin D3 increases calcium absorption from the gut, but without sufficient K2, calcium may end up in soft tissues like arteries instead of bones. Vitamin K2 activates proteins that help direct calcium to where it is needed most—your bones and teeth—while helping maintain arterial flexibility. This partnership supports strong bones and cardiovascular health simultaneously.

Understanding the Synergy: How D3 and K2 Work Together

Vitamin D3 (cholecalciferol) stimulates the production of calcium-binding proteins and osteocalcin, a key bone matrix protein. However, osteocalcin must be carboxylated (activated) by vitamin K2 to effectively bind calcium to the bone matrix. Similarly, matrix GLA protein (MGP), which helps prevent calcium deposition in arteries, is activated by vitamin K2. Without adequate K2, the calcium absorbed due to D3 may not be properly utilised, potentially compromising both bone density and vascular health. The MK-4 form of K2 used in this supplement is a short-chain menaquinone with a rapid turnover, ideal for supporting these daily activation processes.

What Makes Designs for Health Vitamin D Supreme Special?

This formula goes beyond standard D3+K2 supplements by including both vitamin K1 and K2 (as MK-4) plus geranylgeraniol. K1 is primarily involved in normal blood clotting, while K2 (MK-4) focuses on bone and cardiovascular health. The addition of GG—a compound naturally produced in the body but declining with age—further supports bone health and immune system balance. Each small, easy-to-swallow capsule provides 5000 IU of vitamin D3 and 2000 mcg of total vitamin K (as phytonadione and menaquinone-4), making it a comprehensive choice for those seeking advanced nutritional support.

Frequently Asked Questions

Can I take this supplement if I am on blood thinners?

Vitamin K can interfere with anticoagulant medications like warfarin. Consult your health care provider before use if you are taking blood thinners.

What is the best time to take this supplement?

Vitamin D and K are fat-soluble, so taking them with a meal containing fat enhances absorption.

Is this product gluten-free and non-GMO?

Designs for Health products are typically gluten-free and non-GMO, but please check the label for specific certifications.

This product is a food supplement and should not be used as a substitute for a balanced diet and healthy lifestyle. These statements have not been evaluated by the European Medicines Agency. This product is not intended to diagnose, treat, , or prevent any disease.