My girlfriend has quit taken zoloft after of being on it for a period of two yrs she has been off it for about 3Wks right now and i believe to be going through some serious withdrawals i have noticied some serious changes in her mood swings.  Is this a common reaction that is caused by withdrawing from this medication so rapidly?  Is there things that i might encounter during this time that she is tring to quit this med?  Also does this med have side effects in regards to loss of sexual performance?

Please advise on some side effects that might occur while not taken this med and what i should expect in the long run?