Venlafaxine 37.5mg dosage one a day making me feel very tired Hate feeling to tired spaceds out in Bed room most of the time or on sofa as I've Been on it for 5 Days its in my system can I drop down to 25mg one a day after I ask my gp if it's ok to do will that make me feel less tired as I'm scared of being on anti deprsents any way but need it's due to my anxiety attack and panic attacks will all this pass sticking with this dose I'm on or I'll fill like this all the time.