I'm weaning off paxil from 20mgs down to 10mgs while starting effexor (venlafaxine) at the same time 37.5mgs a day having withdrawals how long does this last?

Medication effects: Using Paxil with Effexor (venlafaxine) can increase the risk of Serotonin Syndrome- confusion, extreme changes in blood pressure, increased heart rate, fever, sweating, shaking, blurred vision, stomach cramp, nausea, vomiting, and diarrhea. See Psychiatrist immediately for • Diagnosis • Medication effects, interactions • Withdrawal symptoms • Treatment • Frequent follow up • Therapy for stresses in your life

Please see your Psychiatrist for an evaluation of your medication. Have a physical examination to know if your symptoms are from a physical illness. A Clinical Psychologist with expertise in multiple types of psychotherapy can help. If you are not confident in your Psychiatrist please see another for a second opinion.