<s>[INST] My wife has been treated over the past 9 months for breast cancer . First with chemo then surgery and finally radiation that just ended. One of the side effects of the chemo was a terrible taste in her mouth. After chemo it cleared up but has returned worse then before. How long will this last and is there anything to be done for it? [/INST] Hi, bad taste in the mouth should resolve in 6 to 9 months post chemotherapy. It will gradually recover and there is no standard treatment for it. Still she can use honey with food which will help her to recover. Take care. </s>