Mild interactionMild

Fish oil (EPA/DHA) and Direct anticoagulant: interaction, severity and spacing

Fish oil (EPA/DHA) and Direct anticoagulant interact because omega-3 fatty acids have mild platelet-inhibiting effects that add to anticoagulant action. Take them with care. Mild risk.

Last reviewed: 2026-09-20Reviewed by: StackingRight clinical review

The interaction in detail

Summary of the Fish oil (EPA/DHA) and Direct anticoagulant interaction
PairFish oil (EPA/DHA) and Direct anticoagulant
TypeNutrient–drug interaction
SeverityMild
Required spacingNone specified
OnsetAt the time of dosing

Mechanism

Omega-3 fatty acids have mild platelet-inhibiting effects that add to anticoagulant action.

What to do

Keep doses moderate and flag any new bruising to your prescriber.

Citationhttps://ods.od.nih.gov/factsheets/Omega3FattyAcids-HealthProfessional/

How to fit both into one day

Fish oil (EPA/DHA)
middaywith food

Take fish oil with a fat-containing meal to improve absorption and minimise reflux. Keep combined EPA+DHA at or below 2 g on anticoagulants.

Putting Fish oil (EPA/DHA) in the midday and Direct anticoagulant in the evening satisfies the 0-hour separation without disrupting either one's absorption window.

Fish oil (EPA/DHA) and Direct anticoagulant: common questions