text: what otc drug can i take for bladder infection? i think i might have it coz i have this urgency to pee at night but nothing comes out.  it also burns when i do urinate.  i started drinking cranberry juice this morning and it has helped. i work at a drug store and the most popular otc for bladder infections is azo.  you will find it in the same section as the midol and feminine hygiene products.  i have used it and it has helped.  but, if the infection is severe, you will need to see the doctor after the weekend.  but, the azo will get you through the weekend with less discomfort.