Lactobacillus Vaginalis Capsules for Treatment of Vulvovaginal Atrophy in Young Breast Cancer Patients

This study is testing whether vaginal Lactobacillus capsules (a probiotic inserted into the vagina) can help young breast cancer patients who experience vaginal dryness and discomfort during chemotherapy. The treatment aims to restore healthy vaginal bacteria. **You may be eligible if...** - You are a woman aged 18–40 with breast cancer (any type), OR aged 41–45 with hormone receptor-negative breast cancer - You are pre-menopausal or perimenopausal - You are planned to receive at least 4 cycles of chemotherapy containing paclitaxel or anthracycline **You may NOT be eligible if...** - You have used vaginal medication or anti-infective drugs in the past 3 months - You have an active genital tract infection - You have a known allergy to probiotics or related ingredients Talk to your doctor to see if this trial is right for you.