question: Hi my name is Mariana. I m taking fentanyl patch 50 mcg. I have been using it for like 2 months. I think this is giving me nausea and constipation . I am taking xeloda for my cancer treatment 2 weeks on and one week off the xeloda. On the week I m off i still think its the patch that makes me feel nausea and vomit . Cause that week I m off the chemo I still vomit so the only thing I m using is the fentanyl patch. I was using the 75 mcg but then 1 week ago I lowered it to 50 because I m afraid to just stop it once and I will feel the withdrawals. How can I get off the fentanyl patch completely. Oh the patch I used it for my aching back and shoulders. I took Ondansetron 8 mg but still don t help. So I stopped taking it cause when I did I actually vomited as well. So I stopped taking it. I have the feeling the patch is causing the nausea but I m afraid of the withdrawals symptoms if I suddenly stop. What can I do, I want get off the patch.