But these treatments for women have provoked controversy. The first product, Addyi, was approved amid an industry-backed publicity campaign painting detractors as sexist. But some opponents argued its risks outweighed its benefits. Addyi must be taken every day and cannot be taken with alcohol, which can cause fainting.

Soon after it went on sale, Addyi was acquired by Valeant Pharmaceuticals for $1 billion, which then failed to promote it. Valeant sold it back to its original owners in 2017 and the drug’s sales have been tepid.

Company officials declined to say how much Vyleesi would cost and said they would provide more details when the product goes on sale later this year. They said they expected insurance to cover Vyleesi on a scale similar to Addyi and to male erectile dysfunction drugs — coverage of those drugs by commercial health care plans is mixed.

The company, which manufactures other products for women’s health, estimates that nearly six million American premenopausal women suffer from low sexual desire, a condition that largely goes untreated. The company said that market could translate into about $35 million a year for every one percent of affected patients who use their product. The drug was developed by Palatin Technologies, which licensed it to AMAG to sell in North America in 2017.

Vyleesi, also known as bremelanotide, has some advantages over Addyi. It is to be used only before sex, and can be taken with alcohol. But the drug also has drawbacks — it does involve needle injections, and in clinical trials, 40 percent experienced nausea after taking it. In all, 18 percent of women dropped out of the trial, including eight percent who stopped participating because of nausea.