I am not a doctor but I did just finish 2 years of Rituxin treatments. So my comments are as a cancer victem in remission and a patient who has had Rituxin.
If your doctor says take it (and insurance will cover it) take it! Rule #1 is do what the doc says----if you have faith in your doctor. If not, get another doctor.
I had no side effects to the Rituxin. The doctor may give anti-nausea pills which help and other things to ward off alergic reactions. I my case the Rituxin didn't bother me at all. The benedryl that I was given to fend of reactions made me sleep all day.
But the Rituxin did not bother me at all.