Contraception What form of contraception is most effective? 26th February 2019 The most effective form of contraception is the sub-dermal implant. It has a failure rate of 0.05% in the first year of use. It is more effective than vasectomy or female sterilisation. Previous What is the average age of menopause? Newer What is endometriosis? Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Name * Email * Website Comment Notify me of follow-up comments by email. Notify me of new posts by email. Δ This site uses Akismet to reduce spam. Learn how your comment data is processed.