Nitrofurantoin
"I use to get bladder infections all the time but this time was BY FAR the worst I've ever experienced. I managed to get myself into a walk-in and they prescribed me macrobid. The first pill I took -- along with cranberry juice, made me feel 80% better. By the third day taking macrobid, I felt 100% better. Definitely take it with a meal though, I took it with something small because I was in a rush and I felt very weak and nauseous."