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Randomised trial, 1995

Does progesterone help premenstrual syndrome symptoms?

Yes. Progesterone pessaries reduced PMS symptoms more than placebo across four cycles. However, it caused more side effects like headaches, vaginal irritation and irregular periods than placebo.

Strong study design 281 women screened; 93 with PMS completed evaluation

What they did

Forty-five general practitioners ran a double-blind study where women used progesterone pessaries (400 mg twice daily inserted vaginally or rectally) or placebo from 14 days before their period until bleeding started, for four cycles. 93 women with PMS completed evaluation.

What they found

Progesterone groups showed greater symptom reduction than placebo during each cycle with statistically significant differences. Adverse events: 51% of the progesterone group reported side effects compared to 43% in the placebo group. Vaginal irritation, headache and irregular periods were more common with progesterone.

What it means for you

Progesterone pessaries appear to reduce PMS when women are carefully selected, but side effects are common. The findings are limited because many women dropped out before completing the study.

93

women evaluated

51%

side effects in progesterone group

400 mg

twice-daily dose

About the study

Original title
Investigation of the efficacy of progesterone pessaries in the relief of symptoms of premenstrual syndrome. progesterone Study Group
Authors
Magill PJ
Journal
The British journal of general practice : the journal of the Royal College of General Practitioners
Year
1995
Study design
Randomised trial
Participants
281
What was tested
Progesterone pessaries 400 mg twice daily vs placebo for four cycles
Open access
Yes

Topics