It's a small plastic Tshaped device that sits in the uterus and releases the hormone progestogen. |
The ovaries also make the hormones oestrogen and progestogen, which help to regulate the menstrual cycle. |
The combined contraceptive pill contains the hormone oestrogen as well as progestogen. |
After counselling, she declined the insertion of an intrauterine contraceptive device, preferring the progestogen only regimen. |
The first study published today found women taking pills containing a progestogen called levonorgestrel had the lowest risk of thrombosis. |
It contains a slow-release store of a synthetic progestogen hormone and is repeated every 12 weeks for as long as needed. |