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Updated: Dec 12, 2025

An In Vivo Estrogen Deficiency Mouse Model for Screening Exogenous Estrogen Treatments of Cardiovascular Dysfunction After Menopause
Published on: August 13, 2019
Effects of vaginal administration of conjugated estrogens tablet on sexual function in postmenopausal women with
Thanapob Bumphenkiatikul1, Krasean Panyakhamlerd2, Thanittha Chatsuwan3
1Division of Reproductive Medicine, Department of Obstetrics and Gynecology, Faculty of Medicine, Chulalongkorn University, 1873 Rama IV Road, Bangkok, 10330, Thailand. thanapob@chula.md.
Background:
Female sexual dysfunction (FSD) is prevalent in women with genitourinary syndrome of menopause (GSM). Vaginal estrogen is effective GSM treatment. This study was primarily aimed to evaluate the effects of vaginal administration of conjugated estrogens tablet on postmenopausal FSD using the Female Sexual Function Index (FSFI). Secondary aims were to evaluate vaginal pH, Vaginal Maturation Value (VMV), Normal Flora Index (NFI) and Most Bothersome Symptoms (MBS) changes.
Methods:
A double-blind trial was conducted in postmenopausal women with FSD (FSFI ≤26.55). Sixty-seven participants were randomized into two arms; vaginally administered conjugated estrogens tablet (0.625 mg, daily for 3 weeks then twice weekly for 9 weeks, n = 33), or placebo (n = 34).
Results:
There was no significant improvement of FSFI observed in estrogens arm compared to placebo in each domain and overall index (p = 0.182). The estrogens significantly improved vaginal pH and VMV, toward more acidity (p = < 0.001), higher VMV (p = < 0.001) and more superficial cells (p = < 0.001). We observed no significant difference in NFI and MBS between arms (p = 0.282, 0.182).
Conclusion:
We found no significant changes in FSFI, NFI, and MBS, but significant improvement in vaginal pH and VMV in postmenopausal women with FSD treated with vaginally administered conjugated estrogens tablet. Few side-effects were reported.
Trial Registration:
Thai Clinical Trial Registry identification number TCTR20180219001 , prospectively registered since 2018-02-19 11:33:21.
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