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Alosetron is a 5-HT3 antagonist used for the management of severe diarrhoea-predominant irritable bowel syndrome (IBS) in women only. It was withdrawn from the market in 2000 owing to the occurrence of serious life-threatening gastrointestinal adverse effects, but was reintroduced in 2002 with availability and use restricted. It is currently marketed by GlaxoSmithKline under the trade name Lotronex.
Additional recommended knowledge
Mode of action
Alosetron, while being a 5-HT3 antagonist like ondansetron, is not an antiemetic. Alosetron has an antagonist action on the 5-HT3 receptors of the enteric nervous system of the gastrointestinal tract.
Serious adverse effects
Alosetron was withdrawn in 2000 following the association of alosetron with serious life-threatening gastrointestinal adverse effects.
The cumulative incidence of ischaemic colitis was 2 in 1000, while serious complications arising from constipation (obstruction, perforation, impaction, toxic megacolon, secondary colonic ischaemia, death) was 1 in 1000.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Alosetron". A list of authors is available in Wikipedia.