Matilda ER Tablet is a vitamin supplement which is used to treat nutritional deficiencies, vitamin B12 deficiency and vitamin B6 deficiency. It is a combination medicine which helps replenish energy, regulates many bodily functions, helps in the formation of red blood cells and provides essential nutrients that are required for the body growth and development. This medicine may cause common side effects like nausea, upset stomach, injection site reactions, numbness of your hands or feet and diarrhoea.