3-4 hra: It depends the route but injectible Lidocaine usually lasts 3-4 hours and topical less topical patch more.
Answered 6/26/2014
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Call your urologist.: There are many factors: concentration of lidocaine, ph and amount of urine in the bladder, absorption qualities of your bladder, presence of inflammation in the bladder. There are no exact time can be given.
Answered 12/8/2012
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