Aminoguanidines

Tegaserod is a 5-HT4 agonist manufactured by Novartis and sold under the names Zelnorm and Zelmac for the management of irritable bowel syndrome and constipation. Approved by the FDA in 2002, it was subsequently removed from the market in 2007 due to FDA concerns about possible adverse cardiovascular effects. Before then, it was the only drug approved by the United States Food and Drug Administration to help relieve the abdominal discomfort, bloating, and constipation associated with irritable bowel syndrome. Its use was also approved to treat chronic idiopathic constipation.

Aminoguanidine is the chemical compound with the formula . It is a versatile synthetic intermediate.

Guanoclor (INN), also known as guanochlor, is a sympatholytic drug. It is known to bind to non-adrenergic sites in pig kidney membranes.

Robenidine is a coccidiostat. Robenidine is an antibiotic used for the control of coccidiosis, a debilitating protozoal infection in poultry. Although there are alternative antibiotics available, robenidine is important in the management of antibiotic resistance as farmers rotate the use of robenidine with other antibiotics to try to preserve the effectiveness of these products in fighting infections.