How to spot the warning signs of 5FU or capecitabine severe toxicity

The following is a guide for a patient or relative of someone having 5FU or capecitabine chemotherapy, to help identify if they may be at immediate risk of severe toxicity that could be life-threatening.

The abnormal effects below are to be considered to be warning signs at any time during or immediately after treatment, but particularly if they occur soon after starting treatment.

If you see signs of abnormal toxic effects, demand to speak
to your oncologist immediately