The IntraUterine System or IUS is an IntraUterine Device (IUD or "coil") that has a coating of levonorgestrel (a progesterone) on its shaft, rather than the traditional copper wire. The brand available in the UK, US and Canada is Mirena coil made by Schering Health. An intrauterine device (intra meaning within, and uterine meaning of the uterus) is a birth control device also known as an IUD or a coil (this colloquialism is based on the coil-shaped design of early IUDs). ... Progesterone is a steroid hormone involved in the female menstrual cycle, pregnancy (supports gestation) and embryogenesis of humans and other species. ... Progesterone is a C-21 steroid hormone involved in the female menstrual cycle, pregnancy (supports gestation) and embryogenesis of humans and other species. ... The IntraUterine System or IUS is an IntraUterine Device (IUD or coil) that has a coating of levonorgestrel (a progesterone) on its shaft, rather than the traditional copper wire. ... Schering Aktiengesellschaft was founded in 1851 and is a research-centered pharmaceutical company, employing more than 26. ...

The progesterone helps reduce endometrial build up and so lightens periods and gives rise to its two licensed uses: The endometrium is the uterine membrane in mammals which is thickened in preparation for the implantation, of a fertilized egg upon its arrival into the uterus. ...

• As a contraceptive, particularly suitable for those with very heavy menses.
• As a treatment for menorrhagia (heavy periods) for women who might previously have required a hysterectomy.

The localised release of progesterone into the women results in less systemic side effects compared to Progesterone only pill or Depo Provera. The Mirena coil can have numerous side effects including:Abdominal pain, upper respiratory infection, leukorrhea, nausea, headache, nervousness vaginitis dysmenorrhea, back pain, weight increase, breast pain, skin disorder, acne, decreased libido, depression, abnormal pap smear, hypertension, sinusitis migraine, vomiting, anemia, cervicitis, dyspareunia, hair loss, eczema. [Manufacturer's notes for physicians available at Berlex.com]
The IUS, unlike IUDs, is not licensed for use as an Emergency contraception (Manufacturer states that hormonal release is less effective for this purpose than the IUD's copper). The menstrual cycle is the periodic change in a womans body that occurs every month between puberty and menopause and that relates to reproduction. ... Menorrhagia is an abnormally heavy and prolonged menstrual periods. ... A hysterectomy is the surgical removal of the uterus, usually done by a gynecologist. ... A side-effect is any effect other than an intended primary effect. ... Progesterone Only Pill (POP) are contraceptive pills that only contain progesterone (or, as used in the USA, the term Progestin for synthetic progesterones). ... Depo-Provera Contraceptive Injection (medroxyprogesterone acetate) is the U.S. brand name of a birth control product manufactured by Pfizer Inc. ... Emergency contraception (EC) (also known as Emergency Birth Control (EBC), the morning-after pill, or postcoital contraception) refers to contraceptive methods that can be used to prevent pregnancy after sex. ...