Subdermal Implants

There are several other forms of chemical control over reproduction in women. These include subdermal implants, such as Norplant, that deliver small constant doses of a synthetic hormone. Typically, six match stick sized capsules are implanted under the skin and they are effective for approximately five years. As you learn about subdermal implants, think of these questions:

• What is the mode of action of subdermal implants in preventing pregnancy?
• What is the fundamental difference between the mode of action of an oral contraceptive and a subdermal implant?
• What effect does this difference have on the overall effectiveness, in terms of percent of women experiencing an accidental pregnancy?
• What are the advantages and disadvantages of a subdermal implant compared to an oral contraceptive?
• Subdermal implants have been court ordered to control the procreational activity of women or as a condition to receive government benefits. What is your reaction to this use of subdermal implants?
• What is the cost of a subdermal implant and how does this compare to the cost of using oral contraceptives over the span of five years?
• The manufacturers of Norplant are being sued. Why?

Another form of birth control for women involves injections.