The main ingredient of Derisin is Haloperidol Melitracine, and the Haloperidol in it is an antipsychotic. Derexin is not effective in treating insomnia, Derexin has some effect on mild depression and anxiety, and doctors like to use it in general hospitals, but in psychiatry, specialists don’t like to use Derexin. Because for the treatment of insomnia, there are many drugs that are much better than Derexin, including anxiety and depression, Derexin is not the drug of choice. So if you have insomnia, you should first look for the cause of the insomnia, and then choose the right medication for the cause, and don’t recommend Derexin as a treatment for insomnia.