Like all medicines, Gliclazide can cause side effects, although not everybody gets them. The most commonly observed side effect is low blood sugar (hypoglycaemia). If left untreated these symptoms could progress to drowsiness, loss of consciousness or possibly coma. If an episode of low blood sugar is severe or prolonged, even if it is temporarily controlled by eating sugar, you should seek immediate medical attention.Liver disorders: There have been isolated reports of abnormal iiver function, which can cause yellow skin and eyes. If you get this, see your doctor immediately. The symptoms generally disappear if the medicine is stopped. Your doctor will decide whether to stop your treatment.Skin disorders: Skin reactions such as rash, redness, itching, hives, blisters, angioedema (rapid swelling of tissues such as eyelids, face, lips, mouth, tongue or throat that may result in breathing difficulty) have been reported. Rash may progress to widespread blistering or peeling of the skin. If you develop this, stop taking, seek urgent advice from a doctor and tell him that you are taking this medicine. Exceptionally, signs of severe hypersensitivity reactions have been reported: initially as flu-like symptoms and a rash on the face then an extended rash with a high temperature.Blood disorders: Decrease in the number of cells in the blood (e.g. platelets, red and white blood cells) which may cause paleness, prolonged bleeding, bruising, sore throat and fever have been reported. These symptoms usually vanish when the treatment is discontinued.Digestive disorders: Abdominal pain, nausea, vomiting, indigestion, diarrhoea, and constipation. These effects are reduced when Gliclazide is taken with a meal as recommended.Eye disorders: Your vision may be affected for a short time especially at the start of treatment. This effect is due to changes in blood sugar levels. As for another sulfonylurea, the following adverse events have been observed: cases of severe changes in the number of blood cells and allergic inflammation of the wall of blood vessels, reduction in blood sodium (hyponatraemia), symptoms of liver impairment (for instance jaundice) which in most cases disappeared after withdrawal of the sulfonylurea, but may lead to life-threatening liver failure in isolated cases.Reporting of side effects: If you get any side effects, talk to your doctor or pharmacist. This includes any possible side effects not listed in this leaflet. By reporting side effects, you can help provide more information on the safety of this medicine.
