closed capsules made of silicone rubber tubing. Each contains 36mg of
levonogestrel. Each capsule is 2.4 mm in diameters and 34mm in length.
Efficacy is 5 years.
The system releases 85mcg per day of levonogestrel, followed by 50mcg per
day by 9 month, 35mcg per day by 18 months and then further decline to
about 30 mcg per day.
Contraindications are
1. active thrombophlebitis or thromboembolic disorders
2. undiagnosed abnormal bleeding pre vagina
3. suspected pregnancy
4. active liver disease, benign or malignant liver tumour
5. known or suspected carcinoma of breast
6. history of idiopathic intracranial hypertension
7. hypersensitivity to levonogestrel or any other components of Norplant
Side effects are prolonged menstruation, irregular menstruation,
spotting, amenorrhoea, pain or itching near the implant site,
infection at implant site, difficulties in removal
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