Some things that might help nausea are Pantothenic Acid (a B vitamin) somewhere between 250 mg. and 500 mg. It supports adrenal function. Vitamin B6, 50 to 100 mg. It is recommended for seasickness, and I found it very helpful for nausea of pregnancy. Fresh ginger sliced and put into tea.
Ping to the top of the list. Johnny’s second chemo was yesterday.