Endo gets US approval for long-acting testosterone (Update)

March 6, 2014 by Matthew Perrone

Drugmaker Endo Pharmaceuticals announced Thursday that it received U.S. approval for its long-acting testosterone injection Aveed, which joins a crowded field of hormone-boosting drugs aimed at aging American men.

The Irish drugmaker said the Food and Drug Administration approved Aveed for men with low testosterone, a condition sometimes associated with fatigue, weight gain and low libido. Endo's injection is to be taken once every 10 weeks, versus weekly or biweekly dosing for currently available products. The company said in a statement it expects to launch the drug this month. The Dublin-based company already markets Fortesta, a prescription gel form of testosterone, the male hormone that begins to decline after age 40.

The FDA approval comes amid growing scrutiny of popular testosterone drugs.

In January the FDA said it was reviewing the safety of the drugs after a federal study of 45,000 patients suggested testosterone therapy could double the risk of heart attack in men 65 and older. Last month the consumer advocacy group Public Citizen called on FDA regulators to add a bold warning label about the cardiovascular risks to all testosterone drugs.

The approval was criticized by Public Citizen's Health Research Group founder Dr. Sidney Wolfe, who sent a letter to the FDA Thursday asking it to reverse its decision. He noted that an FDA panel of outside advisers issued a split opinion on Aveed's safety last year, voting 9-9 on the question of whether the drug was safe for treatment of low testosterone. He adds that the meeting, held last April, did not include a discussion about heart risks.

"It is likely, if not certain, that the vote against safety would have been even greater had there been a presentation and discussion of the cardiovascular risks known at that time," Wolfe states.

FDA spokeswoman Andrea Fischer said in a statement that the FDA is continuing its review of testosterone products, but there is no evidence that Aveed's risks are any greater than those of other testosterone drugs already on the market.

"The FDA's current view is that the benefits of testosterone therapy, including Aveed, outweigh the known risks when used as directed in patients for whom the drug is indicated," Fischer said.

U.S. prescriptions for testosterone therapies have increased more than fivefold in recent years, with sales exceeding $1.6 billion.

FDA labeling on the drugs states that they are only to be used for men who have been diagnosed with hypogonadism, a form of abnormally low testosterone caused by injury or medical illness.

But the latest advertising push by drugmakers has focused on otherwise healthy older men with lower-than-normal levels of testosterone.

Drugmakers and many doctors claim testosterone therapy can reverse some unpleasant side effects of aging—ranging from insomnia to erectile dysfunction. Those claims are mostly based on short-term studies.

Shares of Endo International PLC fell $2.58, or 3.4 percent, to close at $73.89 in trading Thursday.

Explore further: More specialists question safety of testosterone therapy for older men

Related Stories

FDA will review safety of testosterone therapy

February 3, 2014

(HealthDay)—Spurred by a recent report that popular testosterone treatments might raise men's heart risk, the U.S. Food and Drug Administration says it now plans a review of the therapies' safety.

FDA OKs expanded use of prostate cancer drug

December 10, 2012

(HealthDay)—The approved use of the drug Zytiga has been expanded to include treatment of men with late-stage, hormone therapy-resistant prostate cancer before they undergo chemotherapy, the U.S. Food and Drug Administration ...

Recommended for you

Researchers identify source of opioids' side effects

January 17, 2017

A commercially available drug may help drastically reduce two side effects of opioid painkillers—a growing tolerance and a paradoxical increased sensitivity to pain—without affecting the drugs' ability to reduce pain, ...

CVS generic competitor to EpiPen, sold at a 6th the price

January 12, 2017

CVS is now selling a rival, generic version of Mylan's EpiPen at about a sixth of its price, just months after the maker of the life-saving allergy treatment was eviscerated before Congress because of its soaring cost to ...

Many misuse OTC sleep aids: survey

December 29, 2016

(HealthDay)—People struggling with insomnia often turn to non-prescription sleep remedies that may be habit-forming and are only intended for short-term use, according to a new Consumer Reports survey.

The pill won't kill your sexual desire, researchers say

December 15, 2016

Taking the pill doesn't lower your sexual desire, contrary to popular belief, according to research published in the Journal of Sexual Medicine. The authors of the research, from the University of Kentucky and Indiana University ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.