I am currently taking oxybutynin ER 10 mg, I am 70 yrs old..female, the last couple weeks I am experiencing extreme itching in the vaginal area, and burning when urinating, which I am sure is from the itching, I am thinking maybe it is the bladder medication Oxybutynin that might be causing it, Is that a side effect. I take several meds Lisenapril, Metformin,famitidine, zetia, rosuvastatin, and victoza, I would appreciate if you could tell me if any of these drugs could be causing this itching and burning, and/or what can I do to stop it.