Guide
Fish oil and turmeric
Fish oil and turmeric are a common pairing, and each carries its own documented antiplatelet activity — worth knowing if you take a blood thinner, though no trial has tested the two together.
Fish oil and turmeric (curcumin) are a common pairing, and no trial has tested the two supplements taken together. Each has its own documented effect on blood clotting on its own — fish oil's is weak, curcumin's is seen mainly in laboratory research — which is why anyone on a blood thinner or scheduled for surgery has a specific reason to check with a doctor before combining them, not a general reason to avoid either one.
What each one does on its own
Fish oil's effect on clotting is documented in a review of the coagulation literature from 1980 to 2017: fish oil inhibits platelet-to-platelet adhesion and platelet-stimulated thrombin generation in laboratory studies, and the effect from fish oil alone is weak. It becomes more noticeable when combined with actual antiplatelet drugs, and to a lesser extent with warfarin or factor Xa inhibitors. The same review concluded that people taking fish oil without other blood-thinning medication do not have an increased risk of surgical bleeding complications.
Curcumin, turmeric's active compound, has documented antiplatelet activity mostly from laboratory and mechanistic research. A small clinical study looked at this directly in people already stable on blood-thinning medication: after 10 days of a bioavailable curcumin supplement, bleeding time was not significantly different in patients taking aspirin, ticlopidine or clopidogrel, and INR was not significantly different in patients on warfarin or dabigatran. That's a reassuring result for curcumin specifically, but it's a small study, a specific curcumin formulation, and it didn't test fish oil at the same time.
What hasn't been tested
Nobody has run a trial giving people fish oil and turmeric together and measuring bleeding risk. The two studies above each looked at one supplement on its own, against actual medications — not the combination of the two supplements with each other, and not in people taking no medication at all. That gap is worth naming plainly rather than assuming the individually reassuring results add up to a tested combination.
Who has a specific reason to ask a doctor first
- Anyone taking a blood thinner or antiplatelet medication. Both fish oil and curcumin have documented effects on platelet function or clotting; combining either with a prescribed blood thinner is worth a conversation before starting.
- Anyone scheduled for surgery. Surgeons commonly ask patients to stop fish oil and other supplements with a bleeding-related mechanism in the weeks before a procedure — ask what your specific surgical team wants.
- Anyone taking turmeric or curcumin who also has liver concerns. That's a separate caution from clotting; see who should not take turmeric for the documented liver-injury cases.
Questions people ask
Can I take turmeric and fish oil together?
There's no documented problem doing so at typical supplement doses, but no trial has tested the combination directly, and each has its own documented effect on clotting on its own. If you take a blood thinner, ask a doctor before adding either.
Does turmeric thin the blood like fish oil?
Both have documented effects on clotting through different mechanisms — fish oil affects platelet adhesion and thrombin generation, and curcumin affects platelet activity mostly shown in laboratory research. Neither has been shown to cause a bleeding problem on its own in someone not also taking a blood-thinning medication.
Do I need to worry about combining fish oil and turmeric on a regular prescription?
Neither fish oil nor turmeric has a documented interaction with most everyday prescriptions outside of blood-thinning medication specifically. Mentioning any new supplement to a doctor or pharmacist alongside a regular prescription is still the safer habit.
Our product
Electric Tiger Omega-3 is fish oil concentrate only: 1,000 mg per softgel, providing 180 mg of EPA and 120 mg of DHA. It contains no turmeric or curcumin. Full panel here.
Sources
- Carr JA. Role of Fish Oil in Post-Cardiotomy Bleeding: A Summary of the Basic Science and Clinical Trials. Ann Thorac Surg 2018. PMID 29627068.
- Hu S, et al. Interaction study between antiplatelet agents, anticoagulants, thyroid replacement therapy and a bioavailable formulation of curcumin (Meriva). PMID 30070343.
- Electric Tiger Omega-3 Supplement Facts: product page.
Related reading: fish oil and medications: what to check, who should not take fish oil, and who should not take turmeric.
Sources
- Role of Fish Oil in Post-Cardiotomy Bleeding: A Summary of the Basic Science and Clinical Trials A review of the literature found fish oil has a weak blood-thinning effect on its own, which becomes more noticeable when combined with antiplatelet drugs or, to a lesser extent, warfarin or factor Xa inhibitors; fish oil alone wasn't linked to a meaningful increase in surgical bleeding risk.
- Interaction study between antiplatelet agents, anticoagulants, thyroid replacement therapy and a bioavailable formulation of curcumin (Meriva®) A small clinical study found that adding a bioavailable curcumin supplement for 10 days did not measurably change bleeding time or INR in patients already stable on antiplatelet drugs, warfarin or dabigatran.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
