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FDA Proposes Withdrawal of Low Blood Pressure Drug

Mon, 08/16/2010 - 1:35pm
Bio-Medicine.Org

SILVER SPRING, Md., Aug. 16 /PRNewswire-USNewswire/ -- The U.S. Food and Drug Administration today proposed to withdraw approval of the drug midodrine hydrochloride, used to treat the low blood pressure condition orthostatic hypotension, because required post-approval studies that verify the clinical benefit of the drug have not been done.

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Patients who currently take this medication should not stop taking it and should consult their health care professional about other treatment options.

The drug, marketed as ProAmatine by Shire Development Inc. and as a generic by others, was approved in 1996 under the FDA's accelerated approval regulations for drugs that treat serious or life-threatening diseases. That approval required that the manufacturer verify clinical benefit to patients through post-approval studies.

To date, neither the original manufacturer nor any generic manufacturer has demonstrated the drug's clinical benefit, for example, by showing that use of the drug improved a patient's ability to perform life activities.

Orthostatic hypotension is a condition in which patients are unable to maintain blood pressure in the upright position and, therefore, become dizzy or faint when they stand up.

"We've worked continuously with the drug companies to obtain additional data showing the drug's clinical benefits to patients," said Norman Stockbridge, M.D., director of the Division of Cardiovascular and Renal Drugs in the FDA's Center for Drug Evaluation and Research. "Since the companies have not been able to provide evidence to confirm the drug's benefit, the FDA is pursuing a withdrawal of the product."

The FDA today issued a Proposal to Withdraw Marketing

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