Nitrofurantoin
"I am only taking the time to write this review because I see so many negative ones. I'd hate to see someone not take it and risk an infection getting worse! This drug does work, cleared up my UTI in 2 days. There are some not pleasant side effects--  Nausea, I've been feeling this one all week, body ache and chills, only on the first day. In my unique case I'd take any pain in the world over having a strong urge to use the restroom every 30 seconds and intense burning. I've taken this drug once before and felt fine. Talk to the dr. if you're concerned, there are other medications out there!"