__ Subsalicylate, Better Known as Pepto Bismol
Puzzle 1 of Art Studio Medium Pack
Question is: __ Subsalicylate, Better Known as Pepto Bismol
and the answer is: BISMUTH
Word Meaning:
BISMUTH — A chemical element (symbol Bi) with an atomic number of 83: a brittle silvery-white metal.
Definitions from Wiktionary.