Nitrofurantoin
"Back on this stuff again.  Have had repeated UTI's for nearly 6 months now.  All the 5 different types I've had have cleared the infection. But the longest off any without recurrence is 14 days. Normally between 2 to 5 days and it's back.
Anyway had this stuff before, it's easing it but slowly.  But OMG I feel bad. Aches, chills (can live with them as it's over 30 centigrade at mo), nausea and I've only just taken the 5th tablet, 2nd morning of a weeks course.
One day I'll be cured permanently, ultrasound revealed nothing but hopefully, one day and not too far away....At least this one hasn't bought back my childhood asthma like one other type. Thankfully living in the UK cost is minimal."