Weakness or numbness on one side
of the body does not mean that it was a
Stroke. The adverse
effects of Effexor overdose are- vertigo, dizziness, nausea, numbness/tingling in the hands or feet, sleepiness, rapid or slow heartbeat, low blood pressure, seizures, or coma. Since you had taken a heavy overdose and that too pills expired 5 yrs back, the adverse effects would be even worse in severity.