Professor Frank Murray:

Immediately. The shocking thing about it is when Tim Stockwell and his group in Canada looked at this, they found an immediate reduction in alcohol sales and an immediate reduction in alcohol-related admissions to hospitals. One might ask how this could be because many alcohol-related conditions take years or decades to generate. The reason for that is because the people who are most price-sensitive are those with problems with alcohol. Those people who are ill with alcohol-related problems are going to reduce their alcohol intake and that worsens the acute exacerbations they get that often lead to their deaths.