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Vandazole is Metronidazole Vaginal Gel, used to treat bacterial vaginosis.
normal vaginal pH is 3.8 to 4.5. Bacterial vaginosis can often cause a vaginal pH higher than 4.5.
are you taking oral probiotics? this over time can help your vaginal pH
make sure you don't douche.
and avoid sexual activity for now.
avoid sexual activity
keep the area as dry as possible
you can use baby powder to keep down external vaginal moisture.
over time, your body will add good bacteria into your vaginal canal
and this will prevent vaginal yeast infections.
I would resume sexual activity after 2 more weeks