... after chemo. No real info about this drug available except side effects. Painful!!! I want to know how long it takes to restore white blood cells to normal; if it does and if so, to what extent. For how long after each treatment am I at risk of infection and by how much is that risk reduced by Neulasta? Do you go back to 'normal' with Neulasta or just a bit better than you would have been without? Jill