Finasteride is the generic version of the well known brand, Propecia. Finasteride works by preventing testosterone being converted to the hormone dihydrotestosterone (DHT), which allows the hair follicles to regain their normal size. Studies have shown Finasteride 1mg can increase hair growth, and can also improve how people think their hair looks. It can take three to six months of treatment with Finasteride 1mg before an effect is seen. The balding process usually resumes within six to 12 months if treatment is stopped. Side effects for Finasteride 1mg are uncommon.