Furazolidone is a nitrofuran antibacterial agent and monoamine oxidase inhibitor (MAOI). It is marketed by Roberts Laboratories under the brand name Furoxone and by GlaxoSmithKline as Dependal-M.

Furazolidone has been used in human and veterinary medicine. It has a broad spectrum of activity, being active against:^{[citation needed]}

In humans, it has been used to treat diarrhoea and enteritis caused by bacterial or protozoan infections, including traveler's diarrhoea, cholera, and bacteremic salmonellosis.

In 2002, a journal article suggested its use in treatment of H. pylori infections in children.

Furazolidone has also been used for giardiasis (due to Giardia lamblia), amoebiasis, and shigellosis, although it is not a first-line treatment.

From the early 1970s, it has been used in China to treat peptic ulcers, where the mechanism is treatment of the causative Helicobacter pylori infection.

As a veterinary medicine, furazolidone has been used with some success to treat salmonids for Myxobolus cerebralis infections.^{[citation needed]}

It has also been used in aquaculture.