Effect of Foeniculum vulgare (fennel) vaginal cream on vaginal atrophy in postmenopausal women: A double-blind randomized placebo-controlled trial

Abstract

ObjectiveVaginal atrophy is one of the main concerns of postmenopausal women. The aim of the present study was to investigate the effect of fennel vaginal cream on vaginal atrophy in postmenopausal women in Ahvaz, Iran. Materials and methodsThis double-blind randomized controlled trial was conducted on 60 postmenopausal women (45–65 years of age) in Ahvaz, Iran. The study participants were randomly divided into one of two groups, receiving either a placebo (n=30) or fennel 5% vaginal cream (n=30) administered as one application per day (5g/day) for 8 weeks. Main outcomeThe vaginal pH and maturation vaginal index (MVI) were measured at baseline and 8 weeks after the intervention, while the vaginal atrophy symptoms was measured at baseline and at 2, 4, and 8 weeks after the intervention. The data were analyzed using the independent t-test, chi-square test, paired sample t-test, and the generalized estimating equation. ResultsThe number of superficial cells increased significantly in the fennel group after 8 weeks compared to the control group (76.1±15.3 vs. 11.8±8, p<0.001). The number of intermediate and parabasal cells decreased significantly in the fennel group compared to the control group (p<0.001). The vaginal pH decreased significantly at the 8-week follow-up in the fennel group compared to the control group (100% vs. 7.4%, p<0.001). All women in the fennel group had an MVI of 65–100 at the 8-week follow-up, whereas almost half (40.7%) of the women in the control group had an MVI of 50–64 (p<0.001). ConclusionAccording to results of this study, fennel is an effective means to manage the symptoms of vaginal atrophy in postmenopausal women and is devoid of side effects. Larger studies are necessary to confirm the positive impact of fennel for vaginal conditions occurring among postmenopausal women.