How long should you stay on risperdal ?

They may become a little louder than normal and use curse words. Generally, unstable.
This will continue to develop over days and progressively get worse. They may end up doing something stupid that gets them arrested, wreck a relationship, get fired from work, etc.

It is not a good idea to suddenly stop. The longer a person is on a good therapy program, they usually can tell when something is not right, after being "right" for a long time. I often have to add a mg of risperidone to my usual dose when i'm under a lot of stress. This calms me down. I have been combining risperidone with lamictal for a few years now and they work well together. I find that taking too much risperidone can make me somewhat down. Too much lamictal makes me emotionless and flat. A bipolar I is usually much more sensitive to med dosage changes, and can often be well treated with a lower dose. it's the balance you are looking for. small changes in a med until you feel stable and wish to be active and participate in life.
I find I can go without lamictal for a few days and be fine as long as I have the risperidone. It's the risperidone that keeps me sane.

If your relative is still acting out when on a therapy of risperidone, then the dosage may need to be reviewed. A mood stabilizer, such as lamictal may help to reduce sudden mood swings which cause lashing out at people. I find a good indicator of whether a med therapy is working well, is to look at a tragic incident. If a person commits a crime and causes injury, a person lacking empathy or compassion may likely express a feeling of ' get rid of the criminal, and save money from prison time', a person well balanced and stable may express a feeling that the person who committed the crime was desperate, and feel sad that a person felt that the only action he or she could take was to commit the crime. To feel sad that there was not assistance available to help the person, such as family, friends. Psychosis would have a person wish to deal with violence, with violence, and feel that violence is the solution. Normally, people will wish to avoid violence.

When your relative is well balanced, he should express disbelief when hearing of people being violent to their relatives, friends, and co workers, and, lastly, strangers.

I do not believe your relatives treatment is effective, and the dosage of risperdal may need to be reviewed.

There is good information on the side effects of risperidone, I find the benefit outweighs the risks for me.

They also as risperdal, work on the sertonin and dopamine brain transmiters(neuro). So, hopefully he'll find some relief for the way that hes feeling and behaving. Again, its difficult for me to suggest this drug family or that one. He certainly needs to sit with professional and talk as to how he thinks versus say she/he thinks he might be the best course to go in way of his treatment. If its not addressed, he might get himself into situations that are not good to say the least. best wishes to you and yours.