Omacor is usually well tolerated but it may cause some side effects. In the list of possible side effects given below, we give an indication of how likely it is that you will get these side effects: ‘common’ means less than one in ten patients may experience this side effect; ‘uncommon’ means less than one in a hundred; ‘rarely’ means less than one in a thousand; and ‘very rarely’ means less than one in ten thousand patients.
Common – indigestion and nausea
Uncommon – abdominal and stomach pain, allergic reactions, dizziness, taste impairment, diarrhoea and vomiting Rare – headache, acne, itchy rash, raised blood sugar, liver complaints Very rare – blood in your faeces, low blood pressure, dry nose, hives, blood changes. The soft gelatin capsules contain a small quantity of glycerol, which can be harmful in high doses. Glycerol can cause headache and stomach upsets and diarrhoea.Tell your doctor or pharmacist if you are concerned, or if you have any other side effects which are not mentioned.