U.S. Food and Drug Administration Clears Flibanserin, a Desire-Boosting Treatment for Postmenopausal
- The agency widened the authorized use of Addyi, a daily drug to treat low libido in women, to encompass postmenopausal women up to age 65.
- The approval will provide fresh choices for older women, but specialists warn that addressing HSDD requires a “comprehensive strategy.”
- The medication carries potentially dangerous interactions with drinking that may result in syncope, so refraining from drinking is recommended.
The Food and Drug Administration (FDA) broadened the authorized use of a oral treatment to treat hypoactive sexual desire disorder (HSDD) in women to now encompass women after menopause up to the age of sixty-five.
Prior to the recent news, the medication, flibanserin (Addyi), was solely authorized to treat hypoactive sexual desire disorder (HSDD) in women of reproductive age.
Flibanserin was initially cleared by the FDA in two thousand fifteen, following a protracted and controversial review process.
The agency had denied approval for the drug on two separate occasions, in 2010 and again in 2013. In each instance, the agency expressed reservations about its safety profile, effectiveness, and an unfavorable risk–benefit profile.
Today, flibanserin is the sole oral drug cleared by the FDA for HSDD, though the FDA approved Vyleesi (bremelanotide), an as-needed injectable treatment, in two thousand nineteen.
The chief executive of the maker of flibanserin praised the FDA’s action to expand the drug’s indication, calling it a “significant step” in advancing and focusing on female sexual health.
Other OB-GYNs were supportive for the regulatory move.
“I had few tools for me to recommend because everything was for women who were menstrual and not postmenopausal,” said an obstetrician-gynecologist. “Getting the FDA clearance for this group of women could be crucial to address women after menopause who wish to engage in sexual activity and experience pleasure, but sometimes have problems regarding libido.”
A clinical professor told reporters that the decision was “understandable” given the existing research.
Although supportive, the expert was measured in her assessment: “Clinical trials showed a meaningful difference of the drug over the placebo, but the degree of the enhancement is not overwhelming. Is it worthwhile taking a drug daily and not getting bang for your buck?”
Understanding Addyi, the ‘Women's Desire Pill’?
Flibanserin, which is often called “female Viagra,” has few similarities with the drug from which it draws its nickname.
This medication was first created as an antidepressant but was considered unsuccessful during early studies.
However, scientists observed improvements in measures of libido and arousal and redirected efforts to the drug’s potential as a treatment for diminished sexual desire.
Following initial denials, flibanserin was approved in 2015 to treat HSDD, following further studies and a significant advocacy campaign.
Addyi carries a boxed (“black box”) warning for serious adverse reactions, including a drop in blood pressure and loss of consciousness, when taken alongside alcoholic drinks.
Official guidance advises allowing a two-hour gap after drinking before taking Addyi to reduce the chance of syncope. If a person consumes several drinks on a single occasion, the label recommends skipping the dose entirely.
Assertions about the effects of mixing Addyi and alcohol eventually prompted the pharmaceutical company to fund additional studies examining the combination. The studies, which were small in scale, demonstrated no increased danger of syncope. But experts had concerns.
“These studies don’t seem very convincing to me. They are a good start, but they’re not very big and certainly are short-term,” a public health expert stated.
An gynecologist speculated that this may have been part of the reason why Addyi was not initially cleared for postmenopausal women.
“There have been adverse reactions like the syncopal episodes and dizziness especially in individuals who have had an drink within two hours of treatment. When you get more advanced in age, you become more susceptible to effects like that,” she said.
Another doctor echoed uncertainty about why the broader approval was capped at 65 years of age.
“It's unclear if that has to do with the complexity of the drug. Reviewing a list of the dos and don’ts, they are extensive. Now that this has been approved, they need to come out with an simpler guidance because it may affect our clinical decisions,” he said.
Addressing Diminished Sexual Desire in Postmenopausal Women
Despite these risks, flibanserin could still broaden treatment options for low desire to a different group of females who may find help.
“I believe it will serve this demographic better as long as they have no other medical problems,” said an specialist.
But it is not a simple solution. In fact, the experts consulted all agreed that the female libido is complex and multifaceted.
So treating low desire means considering everything from partnership issues to hormonal changes.
Women after menopause experience a broad range of changes that can affect sexual desire. Symptoms of menopause include:
- sudden feelings of heat
- vaginal dryness
- discomfort with sex
- sleep disturbances
- urinary incontinence
According to one expert, managing these issues is often a first step toward improved intimacy.
“When a patient presents with concerns about desire, my first question is: How’s your vagina feeling? Is intercourse painful?” she said.
The expert suggested both vaginal estrogen and systemic hormone therapy as treatments to alleviate the symptoms of menopause, particularly dryness.
She expressed hope that the FDA’s recent removal of its “serious” warning on HRT will lead more women to feel less concerned about it and to view it as a treatment option.
Androgen therapy is also sometimes prescribed off-label to treat low libido in women, although it is not officially approved for it.
But besides medication, doctors say that personal habits should also be factored in. Conversations about libido almost always begin by focusing on relationships and intimacy.
“I would have no problem recommending Addyi after discussing it with a patient. But I would also advise them to talk about some of the psychosocial issues going on,” she said.
Other suggestions for boosting libido are:
- improving sleep hygiene
- exercising
- staying active
- using over-the-counter lubricants
- practicing extended intimate stimulation
- incorporating vibrators or dilators
“It requires an entire whole body approach to sexuality and menopause in older age,” said an OB-GYN. “That means knowing how your body works, your physiology, and your sexual needs — in other words, what makes you feel good, what allows you to get excited, and ultimately to have a peak of orgasm.”