Vitamin K2 + D3
Vitamin K2 + D3 is a liquid dietary supplement that combines two fat-soluble vitamins commonly taken together to support bone health, calcium metabolism, and immune function. It is often used by people with low vitamin D levels or those looking to maintain healthy bones. It is available over the counter — no prescription needed — and ships from a licensed U.S. pharmacy after pharmacist review.
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30-day supply · $0.42/mL
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Price: $25.00
HSA/FSA Eligible*Doctor visit fee & delivery cost not included in price. Refills at provider discretion.
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Vitamin K2 + D3 — a bone and heart health supplement for vitamin D deficiency, bone support, and calcium metabolism
Vitamin K2 + D3 Quick Facts
| Drug class | Fat-soluble vitamin supplement |
|---|---|
| Treats | Vitamin D deficiency, bone health support, calcium metabolism, immune support |
| Form | Liquid |
| Typical dosing | Take 2mL directly by mouth or with a drink. |
| Prescription required | No — available over the counter |
What Is Vitamin K2 + D3?
Vitamin K2 + D3 is an over-the-counter liquid supplement combining vitamin D3 (cholecalciferol) and vitamin K2 (typically menaquinone-7). Vitamin D3 helps the body absorb calcium, while vitamin K2 helps direct calcium to the bones rather than soft tissues. Taken together, they are used to support healthy bones, teeth, and normal calcium metabolism. As a dietary supplement, it is not intended to diagnose, treat, cure, or prevent any disease.
What Does Vitamin K2 + D3 Treat?
Vitamin D deficiency or insufficiency
Bone health and bone density support
Healthy calcium absorption and metabolism
Support for teeth and skeletal health
Immune system support
General nutritional supplementation
Vitamin K2 + D3 Dosage
Adults: Take 1 dropperful (or 1 serving per product label) by mouth once daily with a meal containing fat.
Do not exceed the labeled serving unless directed by a healthcare provider.
Your prescriber will determine the dose and duration that are right for you. Always follow the directions on your prescription label.
Vitamin K2 + D3 Side Effects
Common side effects
- Nausea
- Upset stomach
- Constipation
- Decreased appetite
- Mild headache
- Dry mouth
- Metallic taste (with high vitamin D intake)
Serious side effects
Stop taking this medication and seek medical attention right away if you experience:
- Signs of hypercalcemia (confusion, excessive thirst, frequent urination)
- Irregular heartbeat
- Severe weakness or fatigue
- Kidney problems (flank pain, changes in urination)
- Allergic reaction (rash, swelling, difficulty breathing)
Warnings & Interactions
Do not take with warfarin or other blood thinners without consulting your provider — vitamin K can reduce their effect
Avoid exceeding recommended doses; excess vitamin D can cause toxicity and high blood calcium
Use caution with kidney disease, hypercalcemia, or hyperparathyroidism
Tell your provider about all medications, including thiazide diuretics and digoxin
Consult a provider before use if pregnant or breastfeeding
Keep out of reach of children
Store per label; shake well before use
Tell your prescriber about all medications, supplements, and health conditions before starting vitamin k2 + d3.
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