Check before you startThis one has documented interactions with medication classes where the consequences are serious. If you take any prescription medicine, run it past a pharmacist before starting.
How long to take it
Ongoing, as with vitamin D by itself.
Who it's actually for
Anyone taking vitamin D long-term who wants fewer bottles.
Safe upper limit
UnverifiedGoverned by the vitamin D limit: 100 mcg / 4,000 IU per day
Same as vitamin D alone. The K2 component is the reason to avoid it on warfarin.
No source attached yet. Treat this as a starting point, not a citation, until reviewed.
Interactions to know about
- Blood thinners / antiplatelets — Warfarin, apixaban, rivaroxaban, clopidogrel, aspirin
- Thiazide diuretics — Hydrochlorothiazide, indapamide
- Digoxin — Heart rhythm medication
Other supplements:
Run your full list through the interaction check.
Practical notes
- Check the D dose against anything else you take — this is a classic stacking trap.
- Not suitable on warfarin because of the K2.