Definitely ask your oncologist. What is appropriate for one person could be adverse for another, particularly if you have other medications in the background.
My oncologist was fine with me taking magnesium, Vit D and Vit B through my TC chemo. There were stages through each of my cycles that I didn't take anything because I had such miserable bowel and colon pain that I couldn't stand the thought of swallowing anything that had even the remotest possibility of aggravating my already furious gut. No science to back that up, just followed what felt right at the time.
Ask, ask ask. Your team will have heard it all before. Sometimes it comes down to 'If you think it will make you feel better take it.' Sometimes it's "Best leave that alone for the moment' (Tumeric was in that camp for me) Marg