HOW EFFECTIVE ARE LONG-ACTING CONTRACEPTIVES?
Most long-acting methods are over 99% effective at preventing pregnancy with both typical and perfect use. This means that less than 1 out of every 100 women on a long-acting method will become pregnant in one year. Typically, 9 out of every 100 women using the pill will become pregnant. They are the most effective reversible methods of contraception because they do not depend on you remembering to take or use them to be effective.
The contraceptive injection is the exception and is 94% effective with typical use and over 99% effective with perfect use. This is because there is room for human error when injecting it.
WHY CHOOSE A LONG-ACTING CONTRACEPTIVE?
They're ideal if you know that you do not want to have children for a while. Once in place, you don’t need to think about these methods until they need replacing, and none of them interrupt sex. They are more reliable than short-acting methods as you don’t have to remember to take them each day, or use them each time you have sex.