Hot flashes may return after ending antidepressant

For about a third of women taking antidepressants to treat menopause symptoms, hot flashes and night sweats will return after discontinuing the drug, according to a new study.

"It's important for people to understand that...the benefit of the treatment is related to the duration of the treatment," said Dr. Hadine Joffe, lead author of the study. But that shouldn't discourage women from trying an antidepressant if they want to, she added.

"Just because symptoms come back after you stop it doesn't mean it didn't make a big difference when you took it," said Joffe, who is an associate professor of psychiatry at Harvard Medical School and director of research in the Center for Women's Mental Health at Massachusetts General Hospital.

Escitalopram, an antidepressant sold under the brand name Lexapro, is not approved to treat menopause symptoms, but physicians may prescribe it because some - though not all - studies have found it can reduce the number and severity of hot flashes.

It has "a moderate effect," Joffe told Reuters Health. "The drug does not eliminate hot flashes, but it can make "a very meaningful improvement in somebody's life."

Antidepressants of the same type as Lexapro, called selective serotonin reuptake inhibitors (SSRIs), are also used to treat menopause symptoms.

Joffe said there have not been enough studies to determine just how long women should take an antidepressant to treat hot flashes, nor whether the symptoms return once they stop the treatment.

To address the second question, she and her colleagues asked 200 women to take 10 or 20 milligrams a day of Lexapro for eight weeks.

The team's final analysis included 76 women who showed at least a 20 percent improvement on the drug - for instance, dropping from 10 hot flashes a day down to eight or fewer.

After the two-month treatment period, the women stopped taking the pills and the researchers tracked their symptoms for another three weeks. The team was also careful to screen for withdrawal symptoms from the drug itself.

Menopause symptoms returned for about a third of the women who had seen an improvement on the drugs. Results were similar whether the women had reported experiencing less severe symptoms while on the drug or had said they felt less bothered by their symptoms during treatment.

Among 49 women who said they had benefitted on all three symptom measures - number, severity and bothersomeness - 44 percent experienced a relapse within three weeks of discontinuing the drug.

For most of those women, symptoms rebounded to about the same levels as before the treatment.

Among the women who didn't relapse, symptoms dropped from about 9.5 a day before treatment to 4.4 per day three weeks after stopping.