like most every medication it should be weaned out of your system. But only your physician can give this advice.
is not an opiate
but if you have been taking it regularly you may experience some withdrawal like symptoms. Your body will "look" for this drug... when it doesn't find it it reacts.
According to what I have read it's called the "Discontinuation Syndrome." Symptoms include, nausea, vomiting, fatigue, sweats, insomnia, malaise, and a few others.