I bought this for my 87 y.o. mom who occasionally gets vertigo, sometimes so severe that she stays in bed for a few days. Luckily she has only had to use this a few times over the past few months, and she says it works. She takes it on the onset of symptoms and thus far her symptoms did not progress into being in bed for a few days. She did say that it does not provide instant relief but takes a few hours to work.