I am so glad you came back with your question.
I have personally not taken this drug nor am I a psychiatrist or doctor so take what I say with a grain of salt. I did some research on your question and this is what I found.
First of all Health Central has some information about this drug right here. Here is what the article from Health Central says about the side effects of withdrawl:
"This medication may cause dependence, especially if it has been used regularly for an extended time or if it has been used in high doses. In such cases, withdrawal reactions (e.g., nausea, vomiting, headache, numbness, tingling, nightmares) may occur if you suddenly stop this drug. To prevent withdrawal when stopping extended/regular treatment with this drug, gradually reduce the dosage as directed. Consult your doctor or pharmacist for more details, and report any withdrawal reactions immediately."
You should really read the following thread on a forum about this drug to be found here. You are not alone in experiencing serious withdrawl symptoms and even when you have tapered going off the drug as you have done! Some people seem to have managed by tapering really slowly over as much as a ten week period and doing things like cutting the pills in half. From reading the personal experiences on that forum it seems the withdrawl process can take a considerable time... sometimes weeks or even longer. Please read it for yourself to see what people are saying.
I would strongly urge you to ask your doctor about your withdrawl symptoms and also go to your pharmacist and ask what you can do at this point. I hate to see you needlessly suffering.
I hope this helps some and I hope folks who do have a personal experience with this drug will chime in here.
Please tell us how things go. This is important information for anyone wanting to try this medication.
Thank you so much for your question.