Used for bladder instability. It is not acceptable for short-term use prior to bladder surgery. Only the sustained-release formulation is permitted and pilots should be advised to keep themselves well hydrated before and during flights.
Side-effects to enquire about are mainly anti-cholinergic such as dry mouth, blurred vision and drowsiness. If these do not occur in the first few months they are extremely unlikely to occur later.
Class 1 Unfit for one month
OML from one to six months assuming a lying/standing BP shows no evidence of postural hypotension.
Unrestricted may be possible after six months
Class 2 Unfit for one month
OSL from one to three months assuming a lying/standing BP shows no evidence of postural hypotension.
Unrestricted is possible at three months if specific enquiry for side-effects is negative.