Sulfamethoxazole / trimethoprim
"Hi I had all these symptoms last year and they have returned. Only this time they gave me 4 weeks of the antibiotic drug trimethoprim.  So far it's caused my urine to smell funny, slight back pain and pins needles, numbness in my hands I'm also waiting on a PSA and creatnine blood tests I think 1 is to check if the kidneys are function properly and also a PSA blood check to see if any cancer is present. I had all this done last year but was only given a weeks cause of these but I don't find them very effective whatsoever. However the GP as gave me doxycycline 100mg which I had to ask for by name as she said these ones should sort it so I explained to my doctor I need another antibiotic so she did gave me doxycycline 100mg."