Remeron or Mirtazapine is an antidepressant medicine. This medicine mainly affects the neurotransmitters serotonin and norepinephrine. Remeron reduces symptoms of hopelessness and nervousness. This medicine is also useful for the treatment of major depressive disorder and sleep disorder. Sometimes doctors suggest to buy remeron to treat post-traumatic stress disorder (PTSD), anxiety disorder, fright disorder and chronic tiredness. Remeron or Mirtazapine is also used in drug and alcohol rehabilitation centers for dual diagnosis treatment. It helps to treat substance-induced sleep disorders, particularly after detox. The full effects of this medicine can only be seen after a few weeks.