Tolterodine (Detrol, Detrusitol) is an antimuscarinic drug that is used for symptomatic treatment of urinary incontinence. It is marketed by Pfizer in Canada and the United States by its brand name Detrol.In Egypt it is also found under the trade names Tolterodine by Sabaa and Incont L.A. by Adwia.etrusor overactivity (DO, contraction of the muscular bladder wall) is the most common form of UI in older adults. It is characterized by uninhibited bladder contractions causing an uncontrollable urge to void. Urinary frequency, urge incontinence and nocturnal incontinence occur.