Hello,
I had been on Dovebet for 2 years, alternating monthly with various other creams, I must warn you that not only did it stop being effective but also rebounds were every month in the end, and these can be very nasty :'(
It took me around 3 months to wean myself off, with the help of BJ's formula and the now defunct Osas cream.
Having said all that, if you do use it very sparingly as others have advised it can be extremely effective.
Best wishes,
Sharon.