 [ Symptoms ] will clindamycin hcl treat a bladder infection [ Disease ] if you are thinking about self medicating do not do it have you been diagnosed with a bladder infection  or did you self diagnose this if a medical professional diagnosed you with a bladder infection then he or she would have given you a prescription for the appropriate antibiotic to treat that infection as you seem to be aware different antibiotics are effective for different types of infections an antibiotic that treats a tooth abscess for example may have no effect on a foot ulcer that got infected when a person decides to self diagnose and self medicate they do themselves a grave disservice in taking a leftover antibiotic for a perceived infection they may delay getting the correct diagnosis and treatment this can allow the infection to get worse spread and cause other complications if you believe you have a urinary tract infection much more likely than a bladder infection i suggest you go to a clinic or urgent care center they will take a simple urine sample and tell you right away if your problem requires an antibiotic many conditions can cause symptoms similar to a uti or bladder infection even if you would had a uti before do not assume you know that is what is causing your symptoms only a urinalysis can tell you for sure if there are bacteria in your urinary tract wishing you well