Remeron (mirtazapine) is an antidepressant medication that affects chemicals in the brain that may be unbalanced in people with depression. If someone wants to stop taking Remeron, they should talk to their healthcare provider first. The timing and duration of withdrawal symptoms can vary depending on a person’s individual circumstances. In general, withdrawal symptoms may start within one to two days after stopping the medication or reducing the dosage, and may last for several weeks or longer. It is important to follow a healthcare provider’s instructions and guidance for tapering off the medication to minimize the risk of withdrawal symptoms.