Learn more about Ativan withdrawal symptoms, effects, and their timeline. The first two things are how long Ativan has been used and the dosage. The longer. Sep 7, - Indications, Precautions, Side Effects, and Withdrawal Symptoms of Ativan What are the uses of Ativan, what are some possible side effects. Over longer periods of time, the effects of Ativan will most likely deteriorate, possibly Most agree that despite the unpredictability of Ativan addiction, withdrawal.