@Fearless_Moderator
Such sage advice from you both, and on the basis of that wisdom, I connected with the Cancer Care pharmacist.
In case it is of help to anyone, here are her recommendations while undergoing carboplatin and taxol chemo treatments:
Vitamin E and Vitamin B6: often recommended by surgeons/clinicians, no real evidence regarding benefit, but not harmful either, so go for it.
Multivitamin: recommended
Omega-3 supplements: definitely do not take, as it may interfere with carboplatin and reduce efficacy, and also may increase risk of bleeding by further lowering platelet count.
Green tea: do not take, as there is a potential for decreased chemo efficacy, and a potential effect on platelets
All of these can safely be taken when not doing active chemo treatments, just should be avoided when on chemo.