oxybutynin

noun
oxy·​bu·​ty·​nin | \ˌäk-sē-ˈbyüt-ᵊn-ən \

Medical Definition of oxybutynin 

: an antispasmodic and anticholinergic drug C22H31NO3 administered transdermally as a skin patch or orally in the form of its hydrochloride C22H31NO3·HCl to relax the smooth muscles of the bladder in the treatment of urge incontinence, frequent urination, and urinary urgency

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