The generic name of Sigma is Nicorandil Tablets and its side effects mainly include headache, nausea and vomiting, and fever. The main ingredient of Nicorandil Tablet is Nicorandil, which belongs to a kind of medication for the treatment of angina pectoris in coronary heart disease. Nicorandil Tablet is prone to some side effects after use, such as fever, tiredness, headache, dizziness, nausea, vomiting and so on. Patients with severe symptoms may also experience liver dysfunction, thrombocytopenia, and ulcers (mouth ulcers, anal ulcers, peptic ulcers, tongue ulcers, etc.). Patients in the use of drugs, must be based on the specific conditions, follow the doctor’s instructions according to the dose, if there are adverse reactions during the use of drugs, you can be under the guidance of the doctor, appropriate for the reduction of the amount or discontinuation of treatment.