Hello there, I had bought cenvitan men multivitamin for improving my muscle function and general wellbeing. After using it for 6-7 days I observed some serious side effects such as severe anxiety, panic attacks, restlessness, dizzy head, mood change. These symptoms were developed all of sudden. I have stopped taking it from last 10 days and all symptoms are started fading out but I am still feeling dizzy, feeling a little heaviness in back side of the head, and also a slight difficulty in concentration. I was not taking any other medications, supplements along with it and just taking normal diet. Please tell what's going wrong and why did this happen? Please help me to get out of this.