After taking Seroquel, I start to feel like my body has become paralysed and I am falling off something. This makes me have to physically make myself move as I feel I'm going into a fit. It's a bit like when you fall off a step and you have that frightened feeling of falling or jumping off a cliff in your sleep. I have taken it now for 7 years and have come down from 700mg daily to 500mg at night. What is it? And do I need to come off it?