IANAD but I think it means no food in your stomach when you take your meds. Since it can take a while to move food through your digestive system I would think that no food in the past 4-6 hours would constitute an empty stomach.
The population within the borough limits was 10,568 at the 2010 census. When combined with the surrounding Washington and Quincy Townships, the population of greater Waynesboro is 28,285. The Waynesboro Area School District serves a resident population of 32,386, according to 2010 federal census data.
Paulsboro, New Jersey. Paulsboro is a borough in Gloucester County, New Jersey, United States. As of the 2010 United States Census, the borough's population was 6,097, reflecting a decline of 63 (-1.0%) from the 6,160 counted in the 2000 Census, which had in turn declined by 417 (-6.3%) from the 6,577 counted in the 1990 Census.