I have been prescribed venlafaxine and over the last three weeks I've been reducing citalopram from 40mg to 5mg 6 days ago I increased the venlafaxine from 37.5mg to 75mg I stop the citalopram altogether in a couple of days. But the anxiety is so intense I walk round all day with a constant feeling of fear in the pit of my stomach it makes me feel sick when should I expect this to start to get easier and be happy again instead I'm so miserable and have no motivation to do anything it's taken over my life all I think about is how much I want it to go away and every night I prey that tomorrow I'll be ok !