- Concomitant treatment with drugs known to affect mainly the urinary bladder function (e.g. anticholinergics, antispasmodics) at any time during the study. Concomitant treatment with botulinum toxin, capsaicin or resiniferatoxin at any time during the study and treatment with botulinum toxin, capsaicin or resiniferatoxin in the last 6 months prior to Visit 1.