Ensure is the brand name of a family of liquid nutritional supplements manufactured by Abbott Laboratories. Meg Tirrell (2010-01-27). "Abbott Profit Little Changed as Costs Offset Sales". Bloomberg. Archived from the original on 2010-02-02 The beverages are meant to be administered orally, or through nasogastric tubes, directly to the recipient's stomach.
Recipients are either individuals experiencing undesirable weight loss, through age, infirmity or disease, or individuals like captives who are on a hunger strike, who are undergoing involuntary force-feeding.
Hunger strikers at the Guantanamo Bay detention camps are force-fed Ensure via gavage.Barbara Olshansky, Gitanjali Gutierrez (2005-09-08). "The Guantánamo Prisoner Hunger Strikes & Protests: February 2002 – August 2005". Center for Constitutional Rights. Archived from the original on 2010-01-21Candace Gorman (2007-05-01). "The Guantánamo Hunger Strike". In These Times. Archived from the original on 2010-02-02Michelle Shephard (2009-07-20). "Is force-feeding Gitmo detainees ethical? 26 men on hunger strike nourished via nasal tube". Toronto Star. Archived from the original on 2010-02-02
In 2009 Abbott Laboratories sold over $1 billion of its liquid nutritional supplements, Ensure, and the related pediatric product, PediaSure.

