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Hum Psychopharmacol. 2011 Oct;26(7):526-30. doi: 10.1002/hup.1241.

Myo-inositol in the treatment of premenstrual dysphoric disorder.

Author information

1
AGUNCO Obstetrics and Gynecology Centre, via G. Cassiani, Rome, Italy. gianfranco.carlomagno@gmail.com

Abstract

OBJECTIVE:

Premenstrual dysphoric disorder (PMDD) is a mood disorder disrupting social and/or occupational life of affected women. Premenstrual dysphoric disorder etiology is unknown, although a pivotal role is played by the serotoninergic system. Indeed, one of the most effective treatments is selective serotonin reuptake inhibitors. Several studies have proposed a selective serotonin reuptake inhibitor-like role for myo-inositol, likely due to the fact that myo-inositol is the second messenger of serotonin. In the present study, we aimed to investigate the effect of myo-inositol in the treatment of PMDD.

METHODS:

We used a two-phase clinical trial approach (phase I: placebo washout; phase II: comparisons between treatment and placebo) and treated PMMD patients with two different myo-inositol formulations: powder or soft gel capsules. We decided to test these two formulations because according to the manufacturer, 0.6 g of myo-inositol in soft gel capsule has a pharmacokinetic equivalent to 2 g of myo-inositol in powder.

RESULTS:

Our results showed a significant improvement of three different scales: a reduction in the Daily Symptoms Records scale and an improvement of the Hamilton Depression Rating and Clinical Global Impression-Severity of Illness scales. Results were similar for both formulations.

CONCLUSIONS:

In the present study, by using a new pharmaceutical formulation, we were able to clearly prove the efficacy of myo-inositol in PMDD.

PMID:
22031267
DOI:
10.1002/hup.1241
[Indexed for MEDLINE]
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