Hi Bimal, Tablet Epsolin contains a drug called phenytoin which is used in the treatment of epilepsy (seizures/convulsions/fits). Phenytoin may cause side effects such as constipation, dizziness, nausea, vomiting, headache. Some patients may experience nervousness or difficulty in sleeping. If you experience any of these side effects, do consult your doctor. When your tumor was operated upon, the tissue removed would have been sent to a pathology laboratory for histopathological examination. This test report will indicate whether your tumor is malignant or benign. Hope I have answered your query.