Hi - I Am 32 Years Old And Suffer From

Hi - I am 32 years old and suffer from Hair Loss. I was prescribed Tugain 2 by the dermatologist but, on reading the instructions to use, it said that the usage would be life long and the benefit would recede once, I stop using it. I was concerned to use it hence, I would like to know the draw backs of using Tugain and do the benefits surpass the side effects?