Synergy interactionSynergy
Vitamin D3 softgel and Vitamin K2 (MK-7): interaction, severity and spacing
Vitamin D3 softgel and Vitamin K2 (MK-7) work better together because vitamin D raises calcium absorption and vitamin K2 activates matrix Gla protein, which directs that calcium into bone rather than soft tissue. They are complementary, not redundant. Take them together rather than separately. This is a synergy, not a conflict.
Last reviewed: 2026-09-20Reviewed by: StackingRight clinical review
The interaction in detail
| Pair | Vitamin D3 softgel and Vitamin K2 (MK-7) |
|---|---|
| Type | Nutrient interaction |
| Severity | Synergy |
| Required spacing | None specified |
| Onset | At the time of dosing |
Mechanism
Vitamin D raises calcium absorption and vitamin K2 activates matrix Gla protein, which directs that calcium into bone rather than soft tissue. They are complementary, not redundant.
What to do
Take vitamin D3 and K2 together with a fat-containing meal. Typical pairing is 1000 IU D3 per 100 mcg K2.