Through implants, the progestogens are delivered into general circulation in a slow and sustained release manner with lesser side effects. Once implanted, they release drug slowly over a period of 1-5 years depending upon which kind of implant is used.
Implants may be biodegradable or non-biodegradable. Non-biodegradable implants need removal after drug delivery period is over.
Advantages
Disadvantages
The combined hormonal transdermal patch releases 33.9 micro gram of ethinyloestradiol/day and norelgestromin 203 micro gram per day
Where is it applied?
To skin of lower abdomen, buttock or arm (not breast) for 7 days. The regimen usually involves having the patch on for 21 days and off for 7 days.
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