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Depo-Provera

Depo-Provera Contraceptive Injection (medroxyprogesterone acetate) is the U.S. brand name of a birth control product manufactured by Pfizer Inc. It is a hormonal birth control method containing a synthetic progestin, without estrogen, and is administered to women in the form of an intramuscular injection once every 11 to 13 weeks. Depo-Provera causes the ovaries to stop releasing eggs, and is 99.7% effective at preventing pregnancy. more...

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Benefits

  • Unlike oral contraceptive pills which have to be taken at roughly the same time each day (Combined Oral Contraceptive Pill within 12 hours and Progesterone only pill within 3 hours), the effectiveness is not dependent upon the ability to remember to take daily doses. The only continuing action is to book subsequent follow-up injections every twelve weeks.
  • Likewise, Depo Provera is not affected by absorption issues (diarrhoea, vomiting, bowel disorders) nor by antibiotic effects on the normal gut bacterial flora.
  • One side effect (and to some a benefit) is that many women stop having a regular menstrual cycle while on the drug.
  • It provides hormonal birth control without the risks associated with estrogen and may in fact reduce the risk of ovarian and endometrial cancers.
  • Depo Provera, like progestin-only pills, may be used by breast-feeding mothers; this is not the case for combined oral contraceptive pill. Heavy bleeding is possible if given in the immediate postpartum time and is best delayed until six weeks after birth. It may be used within five days if not breast feeding.

Disadvantages & side effects

  • The commonest reason for people not choosing this method of contraception is hypodermic needle phobia.
  • Recent research has shown that Depo-Provera significantly decreases bone density in women, as compared with others in the same age group (see below).
  • For some women, Depo-Provera may have a number of potentially intolerable side effects, including loss of interest in sexual activity, infertility, severe headaches, constant bleeding, weight gain, panic attacks, muscle pain, heart palpitations, pain during sex, and acne. Side effects of Depo-Provera may persist up to 24 months after the last injection.
  • Those planning a pregnancy after having used Depo-Provera may wish to switch to alternative contraceptive methods some 6-9 months prior. Whilst it only gives consistent contraception for 12 weeks, and pregnancy is possible after 13 weeks if not repeated in time, fertility may be temporarily reduced in some women for up to 24 months with average fertility returning in approximately 9 months.
  • Depo-Provera is also used with male sex offenders as a form of chemical castration as it has the effect of drastically reducing sex drive in males.
  • A study of 819 women in one city found an association between using Depo-Provera and higher incidence of chlamydia and gonorrhea. See Hormonal contraceptive use, cervical ectopy, and the acquisition of cervical infections by C. S. Morrison, P. Bright, E. L. Wong, C. Kwok, I. Yacobson, C. A. Gaydos, H. T. Tucker HT and P. D. Blumenthal in Sexually Transmitted Diseases (2004) Vol. 31 p. 561-567.

Read more at Wikipedia.org


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Bone loss in adolescents using depo-provera : An article from: Journal of the Society of Pediatric Nurses $20.00 Birth Control by Injection: The Story of Depo-Provera $7.67
New drug is approved for endometriosis pain: depo subQ provera 104 is as effective as leuprolide acetate but is associated with fewer adverse effects.(News) : An article from: Internal Medicine News $5.95

Birth control and metabolism: Can Depo-Provera shots have caused me to gain weight for four straight years? … and more of your questions answered
Q: I'm a 21-year-old college student who is 5-foot-4 and weighs 165 pounds. I have been on the DEPO-PROVERA birth-control shot since I was 17 and have ...
BMD loss prompts black box for Depo-Provera
The U.S. Food and Drug Administration has added a black box warning to Depo-Provera to emphasize the potential for bone mineral density loss with long-term ...
Depo-Provera users appear to be prone to STDs: the use of oral contraceptives was not associated with increased risk or development of infections
Use of Depo-Provera was significantly associated with the development of cervical infections in a study of 819 women, said Charles S. Morrison, Ph.D.
Depo-Provera use in teens tied to bone density drop - Reduction Of 6.8% After 2 Years
PHILADELPHIA -- Two years of contraception with injectable medroxyprogesterone acetate in adolescent girls was associated with an average 6.8% reduction ...
Variety of contraceptives okay for disabled women - Not Limited to Depo-Provera
NEW YORK -- Although contraceptive injection is widely used in mentally and physically disabled women, many of these patients are candidates for a much ...
Bone loss related to Depo-Provera reverses after discontinuing therapy - Prospective Cohort Study
Bone loss associated with depot medroxyprogesterone acetate was reversible in a prospective population-based cohort study. In 183 nonpregnant, reproductive-age ...
Depo-Provera tied to increased heart disease risk in small study - Maker Points to 'Well-Proven' Safety Profile
Chronic use of depot medroxyprogesterone acetate may have an adverse effect on cardiovascular health, a small, nonrandomized study suggests. The widely ...
No weight gain in short term with Depo-Provera - 8-Week Trial
WASHINGTON -- The latest data on Depo-Provera and weight gain indicate that, at least in the short term, use of the injectable contraceptive is not associated with weight gain. That finding emerg

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