Patient info

Omega 3-acid-ethyl esters 1000mg Soft Capsules – patient leaflet, side effects, dosage

Updated:
Key facts
Status:
Prescription only (POM)
Medicine strength:
1000 mg
Contains active substances:

Patient leaflet - Omega 3-acid-ethyl Esters 1000 mg soft capsules

1. What Omega 3-acid-ethyl esters is and what it is used for

Omega 3-acid-ethyl esters contains highly purified omega-3 polyunsaturated fatty acids. Omega 3-acid-ethyl esters belongs to a group of so called ‘reducers of cholesterol and triglycerides’.

Omega 3-acid-ethyl esters is used:

  • to treat certain forms of increased

    triglycerides (fats) in the blood after changes to the diet have not worked.

2. What you need to know before you take Omega 3-acid-ethyl esters

Do not take Omega 3-acid-ethyl esters:

  • if you are allergic to omega-3-acid ethyl

    esters or any of the other ingredients of this medicine (listed in section 6).

Warnings and precautions

Talk to your doctor or pharmacist before taking Omega 3-acid-ethyl esters if:

  • you are due to have or have recently had

    surgery;

  • you have recently had a trauma;
  • you have a kidney problem;
  • you have diabetes which is not

    controlled;

  • you have problems with your liver. Your

    doctor will monitor any effects Omega 3-acid-ethyl esters may have on your liver with blood tests.

  • you are allergic to fish.
  • you have, or have had, heart problems
  • you develop light-headedness, asthenia

    (feeling of weakness), palpitations or shortness of breath as these may be symptoms of an irregular and often very rapid heart rhythm (atrial fibrillation).

    If any of the above applies to you, talk to your doctor or pharmacist before taking this medicine.

    Children and adolescents

    In the absence of efficacy and safety data, children and adolescents should not take this medicine.

    Older people

    There is limited data on the use of Omega-3-acid ethyl esters in older people above 70 years of age.

    Use Omega 3-acid-ethyl esters with care if you are over 70 years.

    Other medicines and Omega 3-acid-ethyl esters

    Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines.

    If you are using a medicine to stop blood clotting in your arteries, such as warfarin, you may need extra blood tests and your usual dose of your blood thinning medicine may have to be changed.

    Omega 3-acid-ethyl esters with food

    You should take the capsules at meal times. This is to help lower the chances of side effects that affect the area in and around the stomach (the gastro-intestinal area).

    Pregnancy and breast-feeding

    If you are pregnant or breast-feeding, think you may be pregnant or are planning to have a baby, ask your doctor or pharmacist for advice before taking this medicine. You should not take this medicine if you are pregnant or breast-feeding, unless your doctor decides it is absolutely necessary.

    Driving and using machines

    This medicine is not likely to affect you being able to drive or use any tools or machines.

3. How to take Omega 3-acid-ethyl esters

Always take this medicine exactly as your doctor has told you. Check with your doctor or pharmacist if you are not sure.

  • Swallow the capsules with a drink of water.
  • Take the capsules at meal times to help reduce gastro-intestinal side effects.
  • Your doctor will decide how long you should take this medicine.

Dose to treat high blood triglyceride levels (high levels of fat in the blood or hypertriglyceridaemia)

The recommended dose is 2 capsules a day. If the medicine is not working well enough at this dose, your doctor may increase this to 4 capsules a day.

If you take more of Omega 3-acid-ethyl esters than you should

If you accidentally take more of this medicine than you should, do not worry, as this is unlikely that you will need special treatment.

However, you should contact your doctor or pharmacist for further advice.

Front Side Dimension - 135 x 295 mm

Back Side Dimension - 135 x 295 mm

If you forget to take Omega 3-acid-ethyl esters

If you miss a dose, take it when you remember, unless it is almost time for your next dose, in which case take the next dose as usual. Do not take a double dose (twice the dose recommended by your doctor) to make up for a forgotten dose.

If you stop using Omega-3-acid ethyl esters

Do not stop the treatment without consulting your doctor. Talk to your doctor if you are not satisfied with the effects of Omega-3-acid ethyl esters.

If you have any further questions on the use of this medicine, ask your doctor or pharmacist.

4. Possible side effects

Like all medicines, this medicine can cause side effects, although not everybody gets them.

The following are side effects that may happen with this medicine:

Common side effects (may affect up to 1 in 10 people):

  • stomach problems like abdominal

    distension, pain, constipation, diarrhoea, indigestion (dyspepsia), gas, belching (eructation), acid reflux, feeling sick (nausea) and being sick (vomiting)

  • Irregular, rapid rhythm of the heart

Uncommon side effects (may affect up to 1 in 100 people):

  • high blood sugar levels
  • gout
  • dizziness
  • problems with taste
  • headache
  • low blood pressure
  • nose bleed
  • blood in your stools
  • rash

Rare side effects (may affect up to 1 in 1,000 people):

  • allergic reactions
  • raised red skin rash (hives or urticaria)
  • liver disorders, with possible changes in

    the results of certain blood tests

Frequency not known:

Other side effects have occurred in a very small number of people but their exact frequency is unknown

  • Itching
  • Itchy rash (hives or urticaria)

Reporting of side effects

If you get any side effects, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via the Yellow Card Scheme at: www.mhra.gov.uk/yellowcard. By reporting side effects you can help provide more information on the safety of this medicine.

5. How to store Omega 3-acid-ethyl esters

Keep this medicine out of the sight and reach of children.

Do not use Omega 3-acid-ethyl esters after the expiry date which is printed on the carton and the label after EXP. The expiry date refers to the last day of that month. Store Omega 3-acid-ethyl esters capsules below 30°C. Shelf life after first opening of HDPE container is 120 days.

Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to throw away medicines you no longer use. These measures will help protect the environment.

6. Contents of the pack and other information

What Omega 3-acid-ethyl esters contains

  • The active substance is Omega-3-Acid

    Ethyl Esters 90. Each capsule contains 1000 mg of omega-3-acid ethyl esters 90 comprising principally 840 mg ethylesters of eicosapentaenoic acid (EPA) (465 mg) and docosahexaenoic acid (DHA) (375 mg).

  • The other ingredients are alpha-tocopherol, gelatin, glycerol, medium-chain triglycerides and ink (composition of ink is dewaxed bleach shellac resin, isopropyl alcohol, propylene glycol, titanium dioxide, sodium lauryl sulphate, twin 80.

What Omega 3-acid-ethyl esters looks like and contents of the pack

Omega 3-acid-ethyl esters is a soft, oblong, transparent gelatin capsule containing pale yellow colored oily liquid, imprinted with ‘740’.

Omega 3-acid-ethyl esters is available in the following pack sizes:

  • White opaque HDPE container with white opaque HDPE screw closure with induction sealing. Each bottle contains 20, 28, 100 or 120 capsules.

Not all pack sizes may be marketed.

Marketing Authorisation Holder and Manufacturer

Strides Pharma UK Ltd.

Unit 4, The Metro Centre

Dwight Road, Watford,

WD 189 SS

United Kingdom

The leaflet was last revised on 01/2024.

About this document

Source: MHRA - Medicines and Healthcare products Regulatory Agency (products.mhra.gov.uk) · Marketing authorisation: PL 13606/0223

Last revision stated in the text: January 2024 · MHRA data as of 13 October 2026

Found a mistake? Tell us on the contact page.

The information on this site does not replace the advice of a doctor or pharmacist.

Facts about Omega 3-acid-ethyl Esters 1000 mg soft capsules

Prescription needed? Yes, prescription-only medicine (POM)
Active substances Eicosapentaenoic acid, Docosahexaenoic acid
Strength 1000 mg
Pharmaceutical form Oral capsule
Soft, oblong, transparent gelatin capsule containing pale yellow coloured oily liquid imprinted with ‘740’.
How is it taken Oral
Excipients Alpha-tocopherol, Gelatin Glycerol, Medium-chain triglycerides, (Composition of ink is dewaxed bleach shellac resin, isopropyl alcohol, propylene glycol, titanium dioxide, sodium lauryl sulphate and twin 80).
Pack sizes 28 capsule
Is it available? Listed as available (NHS Dictionary of Medicines and Devices – not a record of current supplies)
Shelf life 36 months.
Shelf life after first opening of HDPE container is 120 days.
Storage Store below 30°C.
Drug group (ATC) Omega-3-triglycerides including other esters and acids
  1. C Cardiovascular system drugs
    1. C10 Lipid modifying agents
      1. C10A Lipid modifying agents, plain
        1. C10AX Other lipid modifying agents
          1. C10AX06 omega-3-triglycerides incl. other esters and acids
Marketing authorisation PL 13606/0223 (first authorised 15 July 2014)
Marketing authorisation holder Strides Pharma UK Ltd.
Codes GTIN 8902501016950 · BNF 02120000

Sources: the MHRA product information (products.mhra.gov.uk) and the NHS Dictionary of Medicines and Devices (dm+d), release 10.2.0 of 19 October 2026, NHS Business Services Authority. Contains public sector information licensed under the Open Government Licence v3.0.