This is one ad that’s difficult to swallow.

The New York City health department has released a nauseating video in an effort to prevent people from drinking sugary beverages.

In the video posted today on YouTube, a man opens a soda can and pours the liquid, which is actually a mess of goop made to look like fat, into a glass. When he swills the disgusting-looking substance, he ends up with globs on his face.

The message: Drinking just one can of soda a day can add up to 10 pounds of weight in a year.

CLICK HERE TO WATCH THE VIDEO

Health Commissioner Thomas Farley says sugary drinks are a large part of the obesity epidemic.

A 2007 health department survey found that more than 2 million New Yorkers drink at least one sugar-sweetened beverage each day.