Peptobromeigon is not a commonly known word, but it can be spelled using the International Phonetic Alphabet (IPA) as /pɛptoʊbroʊˈmeɪɡən/. The word appears to be a portmanteau of the names of two antacids, Pepto-Bismol and Bromo-Seltzer. The first half, Pepto, represents the brand that helps with stomach discomfort, and the second half, Bromo-Seltzer, is known for relieving headaches. Overall, Peptobromeigon likely represents a compound that helps alleviate both stomach discomfort and headaches.
Trade name of a protein compound of bromine, recommended as a substitute for the bromides.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.