Levonorgestrel Intra-Uterine Device
- IUSLevonorgestrel Intra-Uterine DeviceMirenaInserted into the uterus for five years of contraception
May cause pelvic inflammatory disease and uterine perforation 
Mechanism of Action
- Thickens cervical mucus, resulting in reduced sperm penetration through the cervix. Less of an effect on follicular development and prevention of ovulation than combined contraceptives.
 
Clinical Use
- Indications
 - Contraception in patients intolerant of combined oral contraceptives
 - Contraception in women who are breastfeeding
 
- Contraindications
 - Pregnancy
 - Past DVT / PE
 - Ischaemic heart disease
 - Past stroke / TIA
 - Breast cancer within the past five years
 - Ischaemic heart disease
 
- Adverse Effects
 - Headache
 - Breast pain
 - Nausea / vomiting / bdominal pain
 - Dizziness
 - Depression
 - Irregular bleeding
 - Acne