Effectiveness 99%
How to use
• Must be placed in uterus by a health care provider
• Must be removed by a health care provider
Pros Mirena may be left in place for up to 7 years Skyla may be left in place for up to 3 years Nothing to remember daily May improve period cramps and bleeding
Cons Does not protect against HIV or other STIs May cause irregular bleeding (spotting, no periods or heavy periods) After 1 year, many women have no period at all (good or bad)