A 28 year old lady was admitted to the psychiatric ward after she had ran out of the house removing her clothes. She complained of feeling depressed but was speaking very fast. She did not let the resident doctor complete his questions. She was hyperactive, distractable and often confronted people on the ward. She complained about not being able to sleep and was low in mood despite being on an antidepressant. Which of the following is the most appropriate treatment for her condition?