Can anti anxiety meds affect chemotherapy?

Not usually: In fact, some of the anti-anxiety agents such as Ativan might help with nausea problem. Another drug that is helpful is zyprexa (olanzapine). The only concern is that some drugs might interfere with the breakdown of some chemotherapy drugs. Your oncologist should be able to review your meds for interaction with treatment. Even tamoxifen can have interactions with antidepressants.