Is it safe to get Botox and then start taking Neomycin & Xifaxin antibiotics soon after Botox injections?

I'm scheduled to get Botox in 2 wks. I'm also scheduled to take a SIBO test soon, but test result may not be ready until AFTER I get Botox. If I am positive, I will likely need to go on both Neomycin & Xifaxin antibiotics. I heard at least Neomycin (not sure about Xifaxin) is unsafe to take with Botox. Is it safe to get Botox with the chance that I may need to start taking Neomycin & Xifaxin shortly after getting Botox? If not, how long after getting Botox should I wait to start antibiotics?