Omega-3 (Fish Oil) + Vitamin K2

Can you take Omega-3 (Fish Oil) and Vitamin K2 together?

SynergyMechanism-based

Yes — take them with the same meal.

What to do. Take both with a fat-containing meal.

Mechanism

Fat-soluble K2 absorbs better with fat

Vitamin K2 is fat-soluble and depends on dietary fat and bile for absorption.

Evidence: Mechanism-based — Plausible biological mechanism with little direct human outcome data.

  1. 01NIH Office of Dietary Supplements — Vitamin K Fact Sheet for Health Professionals

Timing

A day with Omega-3 (Fish Oil) and Vitamin K2

  1. 12:30

    Lunch

    with meal

Taking more than these two?

Add the rest of your stack and your medications for a complete check.

Check my full stack

Buying guide

What to look for on the label

  • Omega-3 (Fish Oil)

    • Triglyceride (rTG) form
    • Third-party tested for oxidation and heavy metals (e.g. IFOS)
    • Algae oil for a vegan option

  • Vitamin K2

    • MK-7 (long half-life)
    • Often sold combined with D3

Related

Other interactions

Omega-3 (Fish Oil) + Vitamin D3

Dietary fat improves vitamin D3 absorption

Synergy→

Omega-3 (Fish Oil) + Vitamin A

Fat-soluble vitamin A absorbs better with fat

Synergy→

CoQ10 + Omega-3 (Fish Oil)

CoQ10 absorbs better with fat

Synergy→

Omega-3 (Fish Oil) + Vitamin E

Vitamin E protects omega-3s from oxidation

Synergy→

Astaxanthin + Omega-3 (Fish Oil)

Fat-soluble astaxanthin absorbs with fish oil

Synergy→

Vitamin D3 + Vitamin K2

D3 makes calcium-binding proteins; K2 activates them

Synergy→

Learn more about Omega-3 (Fish Oil) and Vitamin K2.