If you get bad diarrhea get some Nifural which is the brand name for Nifuroxacide.
Quote from Wikipedia - Nifuroxazide (
INN) is an oral
nitrofuran antibiotic, patented since 1966
[1] and used to treat
colitis and
diarrhoea in humans and non-humans.
[2] It is sold under the brand names Ambatrol, Antinal, Bacifurane, Diafuryl(Turkey), Pérabacticel (France), Antinal, Diax (Egypt), Nifrozid, Ercefuryl (Romania, Czech Republic, Russia), Erfuzide (Thailand), Endiex (Slovakia), Enterofuryl (Russia), Nifuroksazyd (Poland), Pentofuryl (Germany), Topron, Enterovid (Latin America), Eskapar (Mexico), Enterocolin (Bolivia), Apazid (Morocco), Nifural (Indonesia) and Septidiaryl. It is sold in capsule form and also as a suspension. A 2016 clinical trial showed Nifuroxazide to be more effective compared to probiotics in treating acute diarrhea in adults.
Check contraindications - this is a real med - but my experience is that it works.