To my knowledge there's no pill to cure any mental illness as depending on how a person is stricken with what , it's a case of trial and error with medication to make for an easier life. Sometimes it works sometimes it doesn't but there's no known cure.
It's been proven with past experiments that psychopath's brains are wired differently to the norm. It is a deformity in the make-up of cells within the brain.
Whilst some psychopaths may be regarded as 'sick', the majority live lives similar to the rest of us. They are not unwell, ergo, they can't be made well. Whilst no pill, nor courses of ECT can cure broken relationships, there are pills capable of blurring the symptoms of such. There are many diseases which can't be cured by pills, but they can be controlled. Psychopathy ISN'T such.......................unless the psychopath suffers with something which CAN be relieved by medication.