Anticoagulants are often administered to patients before undergoing some surgeries and medical procedures to reduce the risk of life-threatening blood clots. Lovenox has been touted as an effective replacement for the blood thinner heparin in patients undergoing abdominal surgery.

Heparin carries a laundry list of side effects such as nausea, vomiting, abdominal pain, diarrhea and low blood pressure. Concerns about heparin flooded the media last year with cases of accidental overdoes and shipments of tainted batches of the blood thinner imported from China. Both incidences caused patients serious injury or death.

The contaminated heparin scandal in particular created an urgency among consumers, the medical community and pharmaceutical companies to find safer alternatives to the commonly used blood thinner.

Momenta chief executive officer Craig A. Wheeler said in the conference call that the FDA continues to review its Abbreviated New Drug Application (ANDA) process for M-Enoxaprin. ANDA is the FDA’s Center for Drug Evaluation and Research Office of Generic Drugs review and ultimate approval process of a generic drug.

Once approved, an applicant may manufacture and market the generic drug product to provide a safe, effective, low cost alternative to the American public. “We are in regular communication with the agency and responding to their questions as they arise,” Wheeler said.

Wheeler referred to the “global contamination issue” with the heparin supply and the FDA’s plant inspections of Chinese suppliers of heparin, adding that the companies who supply heparin to Momenta’s partner distributor Sandoz for the manufacture of M-Enoxaprin have all been inspected by the FDA.

While the company has no indication that the inspections raised concerns with the FDA, Wheeler said “Any disruption in the heparin supply has the potential to impact our supply chain.” As a result, the company will diversify its sources of heparin and closely monitor the supply chain.

Momenta hopes to launch M-Enoxaparin in 2009 provided the ANDA is readily approved by the FDA.

Source:
Seeking Alpha

SOURCE: Heparin Recall › FDA approval for marketing generic Lovenox expected

Allie recently posted a video on YouTube in light of the heparin scandal, asking “Is my insulin tainted?” Last year, more than 80 Americans died and hundreds more were sickened after receiving doses of the blood thinner heparin. An investigation found that batches of heparin manufactured at Baxter International’s China facility had been contaminated. That led to a recall, and further questions about the quality of the foods and drugs imported into the United States from foreign countries, especially China.

Demanding answers, Allie made phone calls to insulin companies and 24 hours later, reported on her results. Her first call was to Sanofi Aventis, a pharmaceutical company based in Bridgewater, NJ. Sanofi Aventis manufactures medications such as Allegra, Ambien, and Ketek as well as diabetes medications such as insulin glargine injection Lantus and insulin gluisine injection Apidra. Allie reports that she was able to speak with a customer service representative with Sanofi Aventis who informed her that the raw materials are manufactured in Germany and are “completely FDA approved and do not come from China.”

Allie compared her attempts to reach Eli Lilly and Company’s customer service as being in the “twilight zone.” Her repeated calls “during normal business hours” were either cut off or unanswered. Lilly is the 10th largest pharmaceutical company in the world and offers a variety of products. It’s diabetes products include Byetta, Gluagon and Humulin.

Allie then called Novo Nordisk, a manufacturer and marketer of pharmaceutical products and services headquartered in Denmark. Novo Nordisk offers a line of diabetes products such as insulin pens, needles and hypokits. She was told that its diabetes products are bottled in North Carolina.  Its FlexPen is manufactured in Denmark. Customer Service assured her they follow FDA guidelines and run batch tests to ensure safety.

SOURCE: Heparin Recall › Diabetic questions safety of insulin in light of heparin scandal

The victim, who had complained of chest pains for three weeks, was admitted to Hawke’s Bay Hospital in January. Doctors diagnosed him with unstable angina and administered Enoxaparin, a low molecular weight heparin manufactured by Sanofi-Aventis. A half-hour later he was diagnosed with acute lateral myocardial infraction, or a heart attack, and was given another dose of heparin. Within hours, the overdose caused his gums to bleed and his brain to hemorrhage. He died early the next morning.

A cardiologist’s review said that the lack of communication among hospital staff and a delay in seeking advice from the medical registrar was likely the cause of the overdose, which lead to the large, intracerebral hemorrhage that brought on the man’s death. Heparin should not be given to patients less than 12 hours after Enoxaparin.

The coroner’s report did not lay blame on any one medical staff member, however it did show areas for improvement in the treatment. The Hawke’s Bay District Health Board followed up with an extensive review in an effort to improve patient safety and communication among dempartments. As a result, Hawke’s Bay Hospital has implemented treatment protocols for heart attacks among hospital staff and more emphasis is being placed on improving communication between the emergency department and coronary care staff.

SOURCE: Heparin Recall › Heparin overdose at hospital kills Australian man

The blood thinner heparin made news recently when the FDA recalled batches of heparin after more than 80 people died and several others became ill after receiving heparin. It was later determined that heparin made by Baxter International was contaminated in the company’s Chinese manufacturing facility.

While heparin is considered an effective treatment for preventing blood clots and is widely used, it must be injected, which makes long-term therapy difficult. The new drugs would be taken by mouth, which would make dosing easier and eliminate the need for laboratory monitoring.

Heparins garner about $700 million in annual sales, with Sanofi-Aventis’ Lovenox making up nearly two-thirds of the world’s share of the drug. Pfizer’s Fragmin and GlaxoSmithKline’s Fraxiparine account for 6.3 and 5.9 of sales, respectively. Vitamin K Antagonists are responsible for more than $6 billion in sales worldwide, with Bristol-Myers Squibb’s Coumadin, Barr’s Warfarin and Eisai’s Warfarin owning slightly more than half the market’s share.

Three of the five companies are in the late phases of clinical testing, two of which already have been approved in Canada and are awaiting approval in the United States. Two other companies’ drugs have been approved for short-term use in Europe.

SOURCE: Heparin Recall › Pharmaceutical companies developing drugs to fight blood clots

Lovenox, the company’s number one selling medicine, was first recalled last June after some batches of its pre-filled injectible solution were found to be contaminated with trace amounts of oversulphated chondroitin sulphate, according to Reuters.

Oversulphated chondroitin sulphate is the same contaminate found last March by the Food and Drug Administration (FDA) in batches of heparin that killed more than 80 Americans and sickened hundreds more. Those batches were traced back to Baxter International’s Chinese plant.

The level of contaminant found in Lovenox was much lower than what was found in the heparin manufactured by Baxter International, according to Forbes.

So, what exactly is oversulphated chondroitin sulphate?

According to a March 20, 2008, New York Times report, chondroitin sulphate is an inexpensive and readily available dietary supplement made from animal cartilage. In its natural state chondroitin sulphate does not have anticlotting properties, however when it is altered to what is called oversulphated chondroitin sulphate, it mimics heparin.

According to the FDA, oversulphated chondroitin sulphate is not an approved drug in the U.S., nor should it be found in heparin, as it likely caused the allergic reactions that have killed and sickened so many individuals worldwide.

SOURCE: Heparin Recall › French Lovenox brand heparin recall

Linhardt was among the researchers who discovered the source of tainted heparin that was responsible for at least 149 deaths since the beginning of 2007. Manufacturer Baxter International, which supplies about half of the heparin used in the U.S., recalled its supplies of heparin made in China after more than 80 patients suffered serious allergic reactions and death following its use.

According to a report by Bloomberg News Service, Chinese pig farms that provide source material for heparin are not monitored by the U.S. Food & Drug Administration, which increases the risk for contamination. Continued use of traditional heparin products manufactured in these facilities leaves the door open for another contamination event, Linhardt says in the Bloomberg report.

In addition to Baxter’s product, a smaller scale contamination problem was reported with the Lovenox heparin medicine manufactured by Sanofi-Aventis, according to a report by Reuters.

Linhardt presented his team’s synthetic heparin results at the recent American Chemical Society meeting, according to Reuters, where he told those in attendance that today’s heparin manufacturing methods are “simply unsafe.”

Scientists are working on creating larger quantities of the synthetic heparin, which Linhardt hopes will reach human clinical trials in five years, Reuters reports.

SOURCE: Heparin Recall › synthetic heparin in development