Finasteride safe or not

Patient: Hi i am a 23yr old male suffering from baldness.i have been suggested minoxidil and finasteride 1mg.although i took the drug for 7-8 days.i noticed improved results in this short period of time.but i m sceptical about this.because i searched the internet for possible side effects of the drug finasteride and it showed that people suffer from erectile dysfunction,lower sex drive,male breast enlargement and many more creepy diseases.please let me know if using finasteride is safe or not.although it works wonder but i don’t want to jeopardise my health in any case.i also noticed some decreased sex drive and difficulty in getting an erection but when i stopped for about a week.i returned to my original self.thank you!