Hyoscine butylbromide was patented in 1950, and approved for medical use in 1951.
Unfortunately, patients with this condition do not know they are at risk in advance of an attack and it has a completely different pathogenesis to the open-angle form.
Take your next dose at your usual time.
Hyoscine-N-butylbromide, more commonly known by its brand name, Buscopan, is an antimuscarinic agent, widely used in radiology as an antispasmodic agent.
Do not try to force the flow of urine.
If you're still travelling after 72 hours, remove the first patch and stick a new patch behind the other ear.