I'm also withdrawing from Invega. I cut my dosage in half for two weeks and then just stopped altogether. Today is day 6 without it.

My withdrawal symtoms are/were aggitation, nausea, extreme sleepiness, shaking, no appetite, hot/cold feelings. The nausea is manageable with crackers and soda, but the sleepiness is a bother as I have to go to school and work. Last night's sleep was very restless, tossing and turning and waking every hour.

Not sure how long it lasts. I've heard weeks to years, with some of it being permanent. I wish I had never gone on this damned drug!