止し瀉しゃ剤ざいししゃざいMeanings1nounantidiarrheal agentpharmacologyPharmacological term for a medicine that stops diarrhea. Also referred to as 止瀉薬 (ししゃやく).See also: 止瀉薬医い師しは止し瀉しゃ剤ざいを処しょ方ほうした。The doctor prescribed an antidiarrheal agent.