panax
Could not find panacem in Logeion dictionaries.
panacem Noun: masculine accusative singular of panax
pănax, ăcis, v. panacea.
panax, acis, m. (πάναξ), s. panacēa.
pănax, (16) ăcis, m. , ¶ 1 v. panacea 1 ¶ 2 c. panaces § 2 ¶ 3 panais opoponax : Plin. 12, 127.