The expression that something is “a hard pill to swallow” isn’t just a metaphor. Swallowing pills can be difficult and downright unpleasant. It causes one in three people to gag, vomit, or choke. That may keep people from sticking to their medication routines, which can make them sicker. A new study by researchers from the University of Heidelberg in Germany may help people with pill swallowing difficulties. They suggest two techniques — the pop-bottle method and the lean-forward method — that can help people swallow pills more easily. Both methods were tested among people with self-professed difficulty swallowing medicine, and offered improvements of 60% to 90%.