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Researchers believe that the diabetes drug Avandia may cause bone loss and long-term use may speed up osteoporosis. The thinning of the bones is dangerous and could lead to fatal fractures. The study published in the December 2nd issue of Nature Medicine suggests that usage of rosiglitazone in the treatment of type II diabetes may cause osteoporosis.
Older patients who took Avandia had a higher risk of heart attacks, congestive heart failure and death than those on other diabetes pills, according to a study of nearly 160,000 Canadians.
Mark D. is fighting for justice on behalf of his brother, Grant, whose health has gone downhill since he was prescribed Avandia.
GlaxoSmithKline, the manufacturer of Avandia, has already admitted that Avandia does contribute to bone fractures in women. However, the latest research goes further in understanding the issue, just what is happening to those brittle bones, and what it is that’s making them brittle in the first place.
Avandia, a drug used in the treatment of type 2 diabetes, has been at the center of controversy since being linked to an increased risk of heart attack last May. An update to the black box warning-today’s strongest drug warning-is now being added to the Avandia label.
The U.S. Food and Drug Administration (FDA) advised that GlaxoSmithKline, Avandia’s maker, agreed to add the new warning to the existing black box warning. But, despite the revision, the FDA will not withdraw Avandia from the market, claiming that evidence for increased heart attack is inconclusive and does not appear to be higher in Avandia than other type 2 diabetes treatments. In the meantime, the FDA asked GlaxoSmithKline to conduct a long-term study comparing Avandia with other type 2 diabetes drugs. The trial will likely commence in a year; however, full results will not be available until 2014. Patient advocates and FDA critics consider the black box warning a weak response to Avandia’s safety issues and have requested Avandia be pulled from the market.
Avandia breaks down the body’s resistance to insulin but has long been known to cause fluid retention, a major risk factor for congestive heart failure. Evidence does not indicate Avandia and other oral anti-diabetes drugs-thiazolidinediones-prevent cardiovascular risk as a result of reducing blood sugar.
The American Diabetes Association and the European Association for the Study of Diabetes released a revised consensus statement stating that emerging information suggests additional hazards associated with thiazolidedione and rosiglitazone (Avandia) and may result in increased risk of myocardial infarctions. In October, the US Department of Veterans Affairs (VA) announced it was dropping Avandia from its prescription drug formulary stating their review concluded that, in some, Avandia did not afford the same margin of safety as other diabetes medications. The VA accounted for nearly 10-percent of Avandia’s US sales.
In November, Health Canada sent a letter to Canadian health professionals advising Avandia could no longer be prescribed as monotherapy for type 2 diabetes or in combination with sulfonylurea. In May, research based on 42 Avandia studies confirmed a 43-percent increased risk of heart attack among patients taking the drug. In August, Avandia’s warning label was changed to warn that Avandia and others in its class might worsen heart failure.
A Congressional Committee Report found that company executives made a concerted effort to intimidate a diabetes expert into keeping quiet about Avandia’s safety problems, alleging that Glaxo Chief Executive Jean-Pierre Garnier and former research chief Tachi Yamada were involved. An internal government memo dated July 16, 2002 analyzed 47 early FDA reports of patients who went into heart failure and required hospitalization while taking Avandia. The report contained warnings from Federal investigators that Avandia might cause heart failure.
Over six million Americans have used the drug to treat adult-onset, or type 2, diabetes and the concern about Avandia is nothing new. The association between Avandia and increased heart failure risk has been known since 1999 when the drug was first approved.
Avandia was Glaxo’s second most popular drug in 2006, with sales of $3.3 billion. Sales have plummeted since publication of evidence linking Avandia with increased risk of heart attack and failure.
November 29th, 2007 by Staff with NewsInferno.com
Background Rosiglitazone is widely used to treat patients with type 2 diabetes mellitus, but its effect on cardiovascular morbidity and mortality has not been determined.
The government’s own preliminary evaluation of the diabetes pill Avandia confirms the heart risks reported in a study earlier this week and suggests that as many as 60,000 to 100,000 heart attacks might be linked to its use since it came on the market eight years ago, a leading member of Congress said Thursday.
Avandia (rosiglitazone)
Audience: Endocrinologists, other healthcare professionals, consumers
Posted 05/21/2007 FDA informed healthcare professionals of a potential safety issue related to Avandia (rosiglitazone). An on-going analysis of safety data for the treatment of type 2 diabetes mellitus using Avandia showed differing rates of ischemic cardiovascular events including heart attack or heart-related adverse events, some fatal, relative to other drugs used to treat diabetes mellitus. The clinical studies reviewed to date vary with respect to their populations, treatment regimens, and length of follow-up. Based on these data, the risk of ischemic cardiovascular events due to Avandia remain unclear. Prescribers should continue to carefully make individualized treatment decisions for patients with diabetes mellitus.
May 21st, 2007 by Staff with FDA
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