Can someone please tell me how long it takes to see results of dietary changes and vitamins? I posted a few days ago and only had one response so I'm really hoping that someone replies to this one. My daughter has facial tics (mainly nose scrunching) and three weeks ago we started gluten free, dairy free, sugar free and egg free. We also started magnesium taurine and B complex vitamin. We've seen some improvement but I was hoping for more, of course. Blood tests were done yesterday.