trademark for a progestin (progesterone).
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Ectopic pregnancy was thought to be related to IUD use, especially the Progestasert and low-dose LNG-IUS, as it does not block ovulation.
In the United States 2 forms of IUD are approved for the treatment of menorrhagia, Progestasert and Levonorgestrel-releasing IUDs.
The Progestasert and Mirena IUDs, which deliver progesterone directly and continuously into the uterine lining for one year and five years respectively, are additional longer-term options.
However, in the wake of litigation involving the Dalkon Shield, all IUDs except the Progestasert were removed from the U.
Two types of IUDs are available in the United States: the Paragard CopperT 380A and the Progestasert Progesterone T.
Although the Progestasert IUD, which releases 65 [micro]g of progesterone a day and was approved in 1976, also reduces menstrual bleeding and cramping, it is approved for only 1 year of use, said Dr.
Since 1988 two new types of intra-uterine devices (IUDs) have become available - the copper T 380A, known by its trade name, ParaGard, which provides up to eight years of contraceptive effect, and a one-year IUD, sold under the name Progestasert, which works by releasing the hormone progesterone.
Until ParaGard, only one IUD, the progesterone-releasing Progestasert, remained on the market.
That leaves only the Progestasert with its high risk of ectopic pregnancy, and we can only hope that that device will soon exit as well.
The Progestasert IUD, which slowly releases progestin into the uterus for up to one year, may help reduce menstrual flow up to 40 percent.
Six of nine books acknowledge that the Food and Drug Administration considers the Paragard and Progestasert devices to be effective, but four of the six underestimate the duration of efficacy, which the FDA puts at 10 years from insertion.