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Randomised trial, 2020

Does N-acetylcysteine (NAC) work for PMDD as well as fluoxetine?

Yes. NAC worked about as well as fluoxetine for PMDD, and both worked better than placebo.

Moderate study design 119 childbearing women

What they did

119 women were randomly assigned to take either 450 mg NAC twice daily, 10 mg fluoxetine twice daily, or placebo daily for 2 weeks of the menstrual cycle for 2 menstrual cycles. Symptom severity was measured with questionnaires.

What they found

All three groups improved significantly. NAC and fluoxetine worked equally well, with no statistical difference between them. Both NAC and fluoxetine were significantly better than placebo.

What it means for you

NAC might be a useful alternative to fluoxetine for PMDD. However, this was a relatively short study and researchers recommend larger studies with longer treatment to confirm these findings.

119

women studied

450 mg

NAC dose twice daily

2

menstrual cycles treated

About the study

Original title
Assessment of N-acetylcysteine as an Alternative for the Treatment of the Premenstrual Dysphoric Disorder: A Randomized Clinical Trial
Authors
Fatemeh Rajabi, Monireh Haghanifar, Mohammad Javad Tarrahi
Journal
Journal of Pharmaceutical Care
Year
2020
Study design
Randomised trial
Participants
119
What was tested
N-acetylcysteine 450 mg twice daily versus fluoxetine 10 mg twice daily versus placebo, for 2 weeks per cycle for 2 menstrual cycles
Open access
Yes

Topics