Best HPV Vaccine for Teens: The main cause of cervical cancer is Human Papillomavirus (HPV) infection and HPV vaccine is considered effective in preventing it. Vaccines like Gardasil 9 protect against many high-risk HPVs, which are responsible for cervical cancer. According to Dr. Tanaya Narendra, vaccination is most effective at the age of 9 to 14 years. However, the vaccine can be administered even up to the age of 26 years with the advice of a doctor. The HPV vaccine is considered safe and its side effects are quite mild. However, regular Pap smears or cervical screening after vaccination are important, as the vaccine does not provide complete protection against all types of HPV. In this video the doctor has told which HPV vaccine is best for women.