Is it safe to take probiotics during and after chemo?

Depends: This is specific to your case. You must discuss it w/ your oncologist since it can be very helpful w/ some chemos and harmful w/ others. Your particular body may also matter - so don't do it w/o your Dr's agreement!

These medications: are typically very safe but I would consult with the doc administering your chemo since your immune system is affected by the chemo.

Maybe...: "Probiotics by their properties may help strengthen homeostasis and thus reduce side effects associated with cancer treatment. Current evidence supporting probiotic use as adjunctive therapy to anticancer treatment is limited, especially in cancer patients treated with chemotherapy." Ref: Mego M, et al. Complement Ther Med. 2013 Dec;21(6):712-23.