Kangana Ranaut and Rajkumar Rao's upcoming thriller film Mental Hai Kya has been slammed for its insensitive title and promotional posters that many say are derogatory towards people suffering from mental illness.

The Indian Psychotary Society has written to India's Central Board of Film Censors to demand an immediate change in its title.

In a letter, the society said, “We take serious objections to the title of the movie which is discriminative, stigmatising, degrading, inhumane in projecting mental disorders and people who suffer from mental disorders.”

The society has also asked for the removal of any scene "that is violating the rights of persons with mental disorder."

The makers had recently released a new poster showing Kangana and Rajkummar balancing a razor blade on their tongues.

The film's producers have responded to the criticism, saying that the film "will encourage people to embrace their individuality and distinctiveness.”

Mental Hai Kya starring Kangana Ranaut and Rajkummar Rao marks the coming together of some of the most talented and responsible media personalities, who in no way intend to hurt anyone’s sentiments,” the statement read.

“It does not offend, discriminate or disregard any person. In fact the film is a mainstream entertainer which makes a larger point,” the statement further read.

It's also being reported that Kangana expressed her views on the controversy through a tweet by her sister, which read: “On behalf of Kangana all I want to say is that everyone will be proud of Mental Hai Kya the topic and subject she has chosen will trigger relevant talk and discussions around the stigma.”

The film is scheduled to release on June 21.