Can I take omega-3 with other medications?

Yes with almost everything, and the ask and discuss columns of the medicine matrix

Can I take omega-3 with other medications is answered yes with almost everything, and a matrix with four columns sorts the exceptions, because a fat that binds nothing in the gut and shares no metabolic pathway with most drugs has a short list of medicines worth a conversation. The ask column, two entries. Anticoagulants and antiplatelets: warfarin, the direct oral anticoagulants, aspirin and clopidogrel, since EPA and DHA modestly reduce platelet stickiness, an effect small at supplement doses, not associated with clinically important bleeding in trials up to five grams in healthy adults, but noted on the pharmaceutical omega-3 preparations and relevant at gram-and-above doses, so the fish oil is mentioned to the prescriber rather than stopped, a standard softgel usually being of no concern and a high-dose habit being the conversation. Prescription omega-3: a reader already prescribed the omega-3-acid ethyl ester capsules or purified EPA at two to four grams for raised triglycerides does not add a shelf softgel on top, the prescription being the dose and the sum climbing toward the ceiling and the atrial fibrillation signal. The discuss column, two entries. Blood pressure medicines: at the three-gram claim dose, where omega-3 produces a small fall in blood pressure, a reader already on a blood pressure medicine may see a small additive effect, worth mentioning so the GP can watch the cuff, and irrelevant at a standard softgel. Diabetes medicines: an older concern that fish oil worsened blood sugar in people with diabetes was not supported when the regulator reviewed it up to five grams, so a reader on metformin or insulin takes a fish oil with the concern retired and the triglyceride benefit often wanted, a GP's routine knowledge rather than a warning.

The interaction people miss, orlistat, the long fine column, the one conversation, and the matrix filed

The interaction people miss is orlistat, the fat-blocking weight-loss medicine sold on prescription and over the counter, and it is missed because it is an interaction of mechanism rather than chemistry: orlistat works by inhibiting the lipase that digests dietary fat, so that a share of the fat in a meal passes through unabsorbed, and a fish oil taken at the same meal is dietary fat as far as the lipase is concerned, its EPA and DHA partly blocked along with the rest, the same reason orlistat's own information leaflet tells users to take fat-soluble vitamins at a separate time, so a reader on orlistat takes the fish oil at least two hours away from a dose, at a meal the medicine is not covering, the orlistat interaction literature's rule and the one entry on this page that changes a habit rather than prompting a conversation. The fine column is long and it is the point of the page: statins, which share no pathway with a fat and are often prescribed alongside omega-3; antibiotics of every class, the chelation that troubles the minerals being irrelevant to an oil; antidepressants, including the ones the mood research combined omega-3 with; levothyroxine, which the minerals must be spaced from and a fat need not; hormonal contraceptives and HRT; painkillers, including the anti-inflammatories, with the note that a reader on regular aspirin is in the ask column for the antiplatelet reason; inhalers, antihistamines, proton-pump inhibitors, the magnesium-draining medicines that drain nothing from a fat, and the rest of the common cupboard, every one of which sits beside a softgel without conflict, the compatibility matrix's gets-on-with column applied to prescriptions. The one conversation: a pharmacist confirms the whole cupboard in a minute, and a reader on any medicine mentions a new supplement at the next review as routine rather than alarm. The matrix filed: ask about anticoagulants, antiplatelets and prescription omega-3, discuss blood pressure medicines at three grams and diabetes medicines with the concern retired, separate orlistat by two hours, and take everything else with it, with the worked example being a standard softgel in the fine column beside nearly every prescription, one at 17p, £14.99 for 90.

The verdict, a short ask column, one interaction of mechanism, and a long list that a pharmacist confirms

Can I take omega-3 with other medications: yes with almost everything, the matrix having a short ask column, anticoagulants and antiplatelets mentioned to the prescriber at gram-and-above doses and prescription omega-3 not doubled with a shelf softgel, a discuss column, blood pressure medicines at the three-gram claim where a small additive fall is possible and diabetes medicines where the old blood sugar concern was not supported, one interaction people miss, orlistat, which blocks the fat a fish oil is and is separated by two hours, and a long fine column of statins, antibiotics, antidepressants, levothyroxine, contraceptives, painkillers, inhalers and the rest that a pharmacist confirms in one conversation. A standard softgel in the fine column: Futuro Labs Omega 3 Fish Oil, one softgel with food, 180mg EPA and 120mg DHA, 90 for £14.99 at 17p a day.

What to check on the label

Questions people also ask

Does fish oil interact with statins?

No: a fat shares no metabolic pathway with a statin, the two are often prescribed together, and a reader on a statin takes a fish oil without conflict, the only lipid note being a possible LDL rise at the triglyceride-lowering doses of two grams and more that a GP's panel would show.

Can I take omega-3 with orlistat?

Two hours apart: orlistat blocks the lipase that digests dietary fat, and a fish oil taken at the same meal is dietary fat as far as the lipase is concerned, its EPA and DHA partly blocked with the rest, so the softgel goes with a meal the medicine is not covering, the same rule orlistat's leaflet gives for fat-soluble vitamins.

Is fish oil safe with blood pressure medication?

At a standard softgel, no interaction; at the three-gram claim dose, where omega-3 produces a small fall in blood pressure, a reader on a blood pressure medicine may see a small additive effect, worth mentioning so the GP can watch the cuff.

Can diabetics take fish oil with their medication?

Yes: the older concern that fish oil worsened blood sugar was not supported when the regulator reviewed it up to five grams a day, so a reader on metformin or insulin takes a fish oil with the concern retired and the triglyceride benefit often wanted, as routine knowledge for the GP.

Can I take a fish oil supplement if I'm prescribed omega-3 capsules?

No, not on top: the omega-3-acid ethyl ester capsules or purified EPA prescribed at two to four grams for raised triglycerides are already the dose, and a shelf softgel added to them climbs the sum toward the five-gram ceiling and the atrial fibrillation signal.

Sources

1. The orlistat interaction literature: the fat-blocking weight-loss medicine reduces the absorption of dietary fat and of fat-soluble vitamins and oils taken with it, so a fish oil taken at the same meal as orlistat is partly blocked and is separated from it by at least two hours. https://www.medicines.org.uk/emc/search?q=orlistat
2. Electronic medicines compendium (emc): Summaries of Product Characteristics for omega-3-acid ethyl esters 1000mg capsules (Omacor and generics) and icosapent ethyl (Vazkepa). https://www.medicines.org.uk/emc/search?q=omega-3-acid+ethyl+esters
3. EFSA Panel on Dietetic Products. Scientific opinion on the tolerable upper intake level of EPA, DHA and DPA: supplemental intakes of EPA and DHA combined up to about 5g/day do not raise safety concerns for adults. EFSA Journal 2012;10(7):2815. https://www.efsa.europa.eu/en/efsajournal/pub/2815
4. The magnesium and medicines literature: magnesium supplements reduce absorption of tetracycline and quinolone antibiotics, bisphosphonates and levothyroxine when taken together and are spaced from them, while proton-pump inhibitors and some diuretics lower magnesium status, a reason for medical advice in either direction. PubMed record

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