Here's what rhymes with pancuronium.

Consider these alternatives

pyrimethamine / nine etomidate / state calcineurin / can iodate / state anesthetic / magnetic chloral / moral apomorphine / morphine fluoride / fluorite pyridostigmine / strychnine dapsone / shown ethidium / rubidium hydroxide / dioxide azide / side triethylamine / mean topiramate / late chloroform / form stavudine / seen ganciclovir / will valium / alien bisulfite / sulfide borate / late cyanate / late