
Investors and patients reacted to news Monday that two patients taking the drug, Byetta, have died, apparently from damage to the pancreas.
The Food and Drug Administration is considering adding a black box warning to the drug after it received six reports of hemorrhagic or necrotizing pancreatitis (a bleeding pancreas and partial destruction of an inflamed pancreas), that required hospitalization, among patients taking Byetta for type 2 diabetes.
Two patients have died and four others are recovering.
Anyone on the drug who develops pancreatitis should discontinue its use.
Byetta is made by Amylin Pharmaceuticals and it’s jointly marketed with Eli Lilly.
Shares of both companies dropped following the news - Amylin was down 13 percent and Eli Lilly’s shares dropped 1.5 percent.
Byetta produced sales of $636 million last year in the U.S. and more than $14 million overseas.
Last October, the FDA looked at 30 cases of pancreatitis in patients taking Byetta.
The label for the Amylin drug was changed to add more information about the risk, which was not thought to be serious.
Pancreatitis, can result in toxins being released into the bloodstream, but it rarely leads to death and usually takes a week to subside.
The pancreas releases insulin which regulates blood sugar in a healthy person. In type 2 diabetes, not enough insulin is produced and as a result, blood glucose levels rise, which can damage blood vessels, arteries and organs.
Byetta is delivered twice a day by injection and it is supposed to lower blood sugar in patients with type 2 diabetes. The effort to receive two injections a day may be partially responsible for a drop-off in sales in recent months.
Amylin had planned to introduce a longer-acting delayed release form of Byetta taken once-a-week. The companies still say they will try to win approval next year.
An Eli Lilly spokeswoman reminds readers of Reuters that there’s been no link established between Byetta and pancreatitis.
The company’s web site says that when Byetta is used with a medicine that contains a sulfonylurea, low blood sugar is possible.
Other side effects include, “nausea, vomiting, diarrhea, dizziness, headache, feeling jittery, and acid stomach. Nausea is most common when first starting BYETTA, but decreases over time in most patients.” #