it's a lot like risperdal. i haven't tried it myself, but i have taken risperdal. there is a good wikipedia article on invega, here it is:

http://en.wikipedia.org/wiki/Paliperidone

so if you read it you will see that invega is the "better" version of risperdal. through wikipedia you can also find an article on risperdal:

http://en.wikipedia.org/wiki/Risperidone

hope it works for you, wanderer.