Hello,
Welcome to Just Answer and thanks for your question. Which antidepressant were you taking? How long has it been since you stopped?
The half life of Pristiq is about 11 hours and it takes 6-7 half lives to get it completely out of your system (about 3-4 days). However, because of this relatively short half-life, the withdrawal symptoms can continue for much longer than that. It is always best to withdraw gradually, reducing the dosage over several weeks. You need to contact your prescriber, explain the situation, and s/he will want to put you on another SSRI type drug (some of them are generic at $4 per month) or amitriptyline to help taper you gradually. Xanax is for anxiety, and isn't much use when discontinuing an antidepressant.
Side effects do gradually disappear, but it can take as much as 6 months or more for some people. They do gradually decrease as time goes on, so it will never be any worse than it is today.
With proper tapering, the side effects you are having are minimized. That's why the literature says not to stop taking the medication abruptly.
Nurse Practitioner
Board Certified Nurse Practitioner, MS, RN. Private practice and hospitalist experience.