Matilda ER Tablet belongs to the class of 'vitamins', primarily used to treat nutritional deficiencies. It is used to treat and prevent vitamin B6 deficiency, folate deficiency, and vitamin B12 deficiency. Nutritional deficiency occurs when the body is unable to absorb or get enough nutrients from food. It could lead to various health problems, including defective bone growth, skin disorders, digestive issues, and dementia (memory loss).