It can be taken with or without food, but it is better to take Neo-mercazole 5mg tablet at a fixed time.Carbimazole(5mg)Neo-mercazole tablet uses : Neo-mercazole 5mg tablet is used in the treatment of hyperthyroidism How neo-mercazole tablet works :Neo-mercazole 5mg tablet lowers the amount of thyroid hormones produced by the thyroid gland.Common side effects of neo-mercazole tablet : Skin rash, Headache, Skin pigmentation, Pain, Joint stiffness, Nausea, Paresthesia (tingling or pricking sensation), Hair loss