Signs of hyperglycaemia may include:lethargy or tirednessheadachethirstpassing large amounts of urineblurred vision.Long-term hyperglycaemia can lead to serious health problems such as heart disease, blindness, poor blood circulation, gangrene and kidney damage.Glyade is available only with a doctor's prescription.Before you take GlyadeWhen you must not take itDo not take Glyade if you are allergi