My mom's nurse suggested Head & Shoulders intensive care (It is in an all blue container). It is hard to find (I finally found one at a Walgreen's). It has really been working. The nurse said to wash your whole body with it.
Also, For burning eyes, which my mom had an extreme case of...She suggested artificial tears, and then finally had my mom use benedryl. The burning end up just stopping after two weeks.
Now if we could just help her nausea...
Best,
Sunne