Getting consistent, direct sunshine throughout the year can be challenging, leaving millions of active adults with sub-optimal vitamin D levels. However, supplementing with vitamin D alone tells only half of the biological story. When vitamin D helps your body absorb calcium, you need a precise navigational system to make sure that calcium actually reaches your skeletal structure.
Zhou Nutrition K2 Plus D3 Gummies Natural Strawberry Flavor solves this challenge by pairing high-potency cholecalciferol (Vitamin D3) with superior menaquinone-7 (Vitamin K2 as MK-7). Delivered in an easy-to-chew, naturally flavored strawberry gummy, this synergistic formula supplies your daily sunshine nutrient and arterial protection without hard-to-swallow pills or animal gelatin.
The "Calcium GPS": Why Vitamin D3 Always Needs Vitamin K2
Most people know that vitamin D helps your digestive tract absorb calcium from food. But what happens to that calcium once it enters your bloodstream? Without proper biochemical guidance, an issue known as the "Calcium Paradox" occurs: calcium can stray into your arteries, heart valves, and soft tissues instead of building dense, sturdy bones.
Think of your body like a construction site:
Vitamin D3 is the Delivery Truck: It scoops up calcium from your diet and unloads it directly into your bloodstream.
Vitamin K2 is the Traffic Cop & GPS: It switches on biological magnets inside your bones to pull calcium inside, while turning on cellular guards in your blood vessels to keep arterial walls clean, elastic, and smooth.
At the cellular level, Vitamin D3 stimulates the production of two key proteins: osteocalcin (which binds calcium to your bone framework) and Matrix Gla Protein (MGP) (which blocks arterial calcification). However, your body produces these proteins in an inactive, sleeping state. Vitamin K2 acts like an ignition switch: it activates (carboxylates) osteocalcin to lock calcium into bones and activates MGP to shield your cardiovascular system (van Ballegooijen et al., 2017).
Clinically Supported Benefits for Daily Wellness
By delivering 5,000 IU of D3 alongside 90 mcg of naturally fermented MK-7, each daily strawberry chew works to support key physiological systems:
✓ Skeletal Density & Bone Strength
Calcium cannot fortify bone matrix without active osteocalcin. Long-term 3-year human clinical trials confirm that daily nutritional MK-7 supplementation significantly helps prevent age-related bone mineral loss and maintains bone microarchitecture in adults (Knapen et al., 2013).
✓ Arterial Flexibility & Heart Health
Healthy arteries must stay pliable to support smooth blood flow. Activated Matrix Gla Protein (MGP) is your body's primary defense against vascular calcification. Landmark clinical research demonstrates that regular MK-7 intake directly improves arterial elasticity and vascular compliance (Knapen et al., 2015; Geleijnse et al., 2004).
✓ Targeted Immune Defense
Vitamin D receptors (VDR) are located directly on immune cells, including T-cells and macrophages. Maintaining optimal vitamin D blood levels supports innate barrier defense and primes immune cells to respond swiftly to seasonal environmental challenges (Holick et al., 2011).
✓ Seasonal Mood & Vitality
Vitamin D acts as an essential cofactor in the biological synthesis of serotonin in the brain. Daily supplementation helps support positive mood, mental focus, and well-being during dreary winter months when sun exposure is minimal.
Complete Supplement Facts & Full Ingredient List
Zhou Nutrition products are manufactured in audited cGMP (Good Manufacturing Practices) facilities, with third-party testing on raw materials and finished chews to verify purity and potency.
Supplement Facts
Serving Size: 1 Gummy | Servings Per Container: 60
Nutrient / Active Ingredient
Amount Per Serving
% Daily Value
Calories
10
*
Total Carbohydrate
2 g
1%†
Total Sugars
1 g
**
Includes Added Sugars
1 g
2%†
Vitamin D (as Cholecalciferol / D3)
125 mcg (5,000 IU)
625%
Vitamin K2 (as Menaquinone-7 / MK-7)
90 mcg
75%
Sodium
5 mg
<1%
† Percent Daily Values (DV) are based on a 2,000-calorie diet. ** Daily Value not established.
Many basic supplements use synthetic vitamin K2 as MK-4, which has a very short half-life of only 1 to 2 hours in human blood plasma. Zhou utilizes Menaquinone-7 (MK-7) derived from natural fermentation. MK-7 boasts a remarkable circulating half-life of over 72 hours, maintaining steady blood levels around the clock to provide constant vascular and skeletal protection (Schurgers et al., 2007).
Plant Pectin vs. Animal Gelatin
Chewy vitamins often rely on animal gelatin made from bovine or porcine connective tissue, which can melt into clumps in transit and cause digestive sensitivity. These chews use citrus-derived pectin. Pectin is plant-based, handles summer shipping heat with far greater resilience, and provides a pleasant, soft chew.
Absorption Specialist Tip:
Both Vitamins D3 and K2 are fat-soluble nutrients. While each gummy contains natural coconut and sunflower oils to support digestion, chewing your daily gummy with a morning or midday meal that contains wholesome dietary fats (such as avocado, whole eggs, nuts, or yogurt) maximizes bio-absorption into the bloodstream!
Important Health, Medication & Safety Guidelines
Because bioactive nutritional supplements exert tangible physiological effects, responsible wellness requires full transparency regarding drug interactions and contraindications.
If you take prescription anticoagulant medications or vitamin K antagonists—such as Warfarin (Coumadin), Jantoven, or Heparin—do NOT take this supplement without direct supervision from your prescribing physician. Supplemental vitamin K can directly oppose the therapeutic action of blood-thinning drugs, altering your prothrombin time and INR (International Normalized Ratio) blood monitoring numbers.
Hypercalcemia & Kidney Disease: Individuals diagnosed with hypercalcemia (abnormally high blood calcium), primary hyperparathyroidism, or advanced kidney impairment should have their physician review serum 25-hydroxyvitamin D and calcium levels prior to taking high-potency vitamin D supplements.
Pregnancy & Nursing: If you are pregnant, nursing, or planning a pregnancy, consult your healthcare practitioner before use.
Keep Safely Out of Reach of Children: These gummies look and taste like fruit candy. Always store the bottle securely with its child-resistant cap out of reach of children to prevent accidental overdose.
Frequently Asked Questions (FAQ)
Why is Vitamin K2 paired with Vitamin D3 in this gummy?
They work as a natural team. Vitamin D3 helps your intestines pull calcium into your bloodstream, but it does not control where that calcium travels. Vitamin K2 acts like a traffic coordinator: it activates specialized proteins that glue calcium into your bones and teeth, while preventing that same calcium from settling into your blood vessels.
What makes Vitamin K2 as MK-7 better than Vitamin K1 or MK-4?
Vitamin K1 is mainly used by your liver for normal blood clotting and clears your system in a few hours. MK-4 also disappears rapidly within 1 to 2 hours. In contrast, Vitamin K2 as MK-7 stays active in your bloodstream for up to 72 hours, reaching bones and blood vessels throughout your entire body to keep calcium directed properly day and night.
Is taking 5,000 IU (125 mcg) of Vitamin D3 every day safe?
Yes, for most adults 5,000 IU is a safe, effective daily amount to rebuild low vitamin D levels and support strong immunity. The Endocrine Society notes that daily intakes up to 10,000 IU are well within safety margins for healthy adults. If you plan to supplement with 5,000 IU year-round, asking your doctor for a routine 25(OH)D blood test at your regular checkup is an excellent wellness habit.
When is the best time of day to take my chewable gummy?
Because vitamins D3 and K2 are fat-soluble nutrients, they absorb best when your digestive tract is processing dietary fats. We suggest enjoying your daily chew with breakfast or lunch alongside healthy fats like eggs, yogurt, nuts, or avocado.
Do these strawberry gummies contain animal gelatin?
No. Zhou Nutrition uses plant-based fruit pectin rather than pork or beef gelatin. This makes the chews 100% vegetarian, free of animal connective tissue, and much less likely to melt in hot summer delivery trucks.
Can I take this supplement if I am on blood thinners like Coumadin (Warfarin)?
No. Vitamin K directly interacts with anticoagulant medications such as Warfarin by counteracting their blood-thinning effect. If you take any blood-thinning medications, do not take Vitamin K supplements without explicit clearance from your prescribing doctor.
Scientific References & Clinical Literature
van Ballegooijen, A. J., Pilz, S., Tomaschitz, A., Grübler, M. R., & Verheyen, N. (2017). The Synergistic Interplay between Vitamins D and K for Bone and Cardiovascular Health: A Narrative Review. International Journal of Endocrinology, 2017: 7454376. [PMID: 29026399].
Knapen, M. H. J., Braam, L. A. J. L., Drummen, N. E., Bekers, O., Hoeks, A. P. G., & Vermeer, C. (2015). Menaquinone-7 supplementation improves arterial stiffness in healthy postmenopausal women: double-blind randomised clinical trial. Thrombosis and Haemostasis, 113(5), 1135–1144. [PMID: 25694037].
Knapen, M. H. J., Drummen, N. E., Smit, E., Vermeer, C., & Theuwissen, E. (2013). Three-year low-dose menaquinone-7 supplementation helps decrease bone loss in healthy postmenopausal women. Osteoporosis International, 24(9), 2499–2507. [PMID: 23525894].
Geleijnse, J. M., Vermeer, C., Grobbee, D. E., Schurgers, L. J., Knapen, M. H. J., van der Meer, I. M., Hofman, A., & Witteman, J. C. M. (2004). Dietary Intake of Menaquinone Is Associated with a Reduced Risk of Coronary Heart Disease: The Rotterdam Study. The Journal of Nutrition, 134(11), 3100–3105. [PMID: 15514282].
Schurgers, L. J., Teunissen, K. J. F., Hamulyák, K., Knapen, M. H. J., Vik, H., & Vermeer, C. (2007). Vitamin K-containing dietary supplements: comparison of synthetic vitamin K1 and natto-derived menaquinone-7. Blood, 109(8), 3279–3283. [PMID: 17158229].
Holick, M. F., Binkley, N. C., Bischoff-Ferrari, H. A., Gordon, C. M., Hanley, D. A., Heike, P. E., Murad, M. H., & Weaver, C. M. (2011). Evaluation, treatment, and prevention of vitamin D deficiency: an Endocrine Society clinical practice guideline. The Journal of Clinical Endocrinology & Metabolism, 96(7), 1911–1930. [PMID: 21646368].
