NatureGenX ADK Vitamin Supplement – Vitamins A, D3 & K2 MK-7 – 120 Capsules (2-Pack)

What Makes This ADK Supplement Stand Out?

NatureGenX ADK supplies each vitamin in its most bio-available form: retinyl palmitate for vitamin A, cholecalciferol for D3, and menaquinone-7 (MK-7) for K2. The formula is free from gluten, soya and sugar, with no unnecessary fillers. Each serving is just one small capsule, and the 2-pack provides a full 4-month supply (120 capsules). Manufactured in the USA in a cGMP-compliant facility, every batch is tested for purity and potency.*

How Do These Three Vitamins Work in the Body?

Each vitamin in this supplement has a distinct but complementary role. Vitamin A (1,500 mcg per serving) contributes to cell growth, immune function and eye health. As a fat-soluble vitamin, it also supports the activity of vitamin D.*

Vitamin D3 (125 mcg per serving, equivalent to 5,000 IU) is the preferred form for raising blood levels. It enhances calcium absorption from the gut and supports immune cell function and bone remodelling.*

Vitamin K2 as MK-7 (500 mcg per serving) is the most bio-available and long-lasting form of vitamin K2. MK-7 helps activate osteocalcin, which binds calcium to the bone matrix, and matrix GLA protein (MGP), which inhibits calcium deposition in blood vessels. This dual action helps maintain healthy calcium balance throughout the body.*

Key Health Benefits of the ADK Combination

• Bone Health: Supports normal bone density and strength by promoting calcium absorption and directing it to the skeleton.*
• Immune Support: Vitamins A and D3 contribute to the normal function of the immune system.*
• Heart Health: Vitamin K2 helps maintain arterial elasticity by keeping calcium in bones and out of arteries.*
• Dental Health: Proper calcium utilisation supported by K2 contributes to strong teeth and healthy gums.*
• Vision Support: Vitamin A is essential for maintaining normal vision, particularly in low light.*

Why Take Vitamins A, D3, and K2 Together?

Vitamins A, D3 and K2 form a synergistic trio that supports bone health and calcium metabolism. Vitamin A (as retinyl palmitate) helps maintain normal vision and immune function while supporting vitamin D's role in calcium transport. Vitamin D3 increases calcium absorption from the digestive tract, and vitamin K2 (as menaquinone-7, or MK-7) helps direct calcium to the bones and teeth, away from soft tissues such as arteries. Together, they promote proper calcium utilisation for strong bones and overall health.*

Frequently Asked Questions

When is the best time to take ADK capsules?

Because vitamins A, D3 and K2 are fat-soluble, taking them with a meal containing healthy fats (e.g., avocado, nuts, or olive oil) may improve absorption. Many users prefer taking them with breakfast or lunch.

Can I take this supplement with other medications?

If you are taking anticoagulant medications (such as warfarin), consult your doctor or pharmacist before using this product, as vitamin K2 may interact. Always discuss any new supplement with your health care provider.

How does MK-7 differ from MK-4?

MK-7 is a longer-acting form of vitamin K2 that remains active in the body for up to 24 hours, whereas MK-4 has a much shorter half-life. MK-7 is derived from natto or produced synthetically and is the preferred form for sustained support of calcium metabolism.*

Is this product suitable for vegans?

Vitamin K2 MK-7 in this supplement is sourced from fermentation, but vitamin D3 is typically derived from lanolin (sheep's wool). If you follow a strict vegan diet, please check with the manufacturer regarding sourcing.

*These statements have not been evaluated by the Medicines and Health care products Regulatory Agency (MHRA). This product is a food supplement and is not intended to diagnose, treat, or prevent any disease.