THERAPEUTIC AGENT FOR NAUSEA AND/OR VOMITING

摘要

A therapeutic and/or prophylactic agent for nausea and/or vomiting is provided. A therapeutic and/or prophylactic agent for nausea and/or vomiting, comprising a compound of the Formula (I) or a pharmaceutically acceptable salt or solvate thereof:
(wherein
R 1 and R 2 are each independently hydrogen or lower alkyl;
R 3 is hydrogen or lower alkoxycarbonyl; and
R 4 is hydrogen or lower alkyl;
with the proviso that all of R 1 to R 3 are not simultaneously hydrogen; and R 1 and R 4 are not simultaneously hydrogen).