Question: how long does it take for effexor withdrawals to stop?
Answer: How Long do Effexor Withdrawal Symptoms Last? The half-life of EffexorXR is anywhere from approximately 9 to 27 hours, and Effexor withdrawal symptoms can begin within a few hours of the last dose. The half-life is the time that it takes for half of the total ingested dose to be cleared from the body.