I have never heard of Querceptin and leave it to others to enlighten you.
However, many friends and I suffered from these cystitis-like symptoms after the menopause....no infection and distressing pain, urgency etc.
Eventually we were offered Oestrogen cream for topical use...on the urging of a wonderful, influential consultant who ran a menopause clinic locally.
There is a lot of research showing that loss of oestrogen leads to thinning of the tissues in this area and such treatment helps enormously.
We are all using it regularly and finding life much improved!
It is not absorbed systemically and is considered safe for use in patients who have had breast cancer.
Maybe worth researching on the Internet and discussing with your doctor?
Hope this helps and perhaps you will get the info on the Querceptin.