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Effectiveness of Annovera for Birth Control
Annovera is an intrauterine system (IUS) for birth control, which is inserted into the uterus to release hormones that prevent pregnancy. According to the FDA, Annovera is a highly effective form of birth control [1, DrugPatentWatch.com].
The effectiveness of Annovera for birth control is estimated to be around 99% when used correctly [2, DrugPatentWatch.com]. This means that only about 1 in 100 women using Annovera will get pregnant each year.
A study published in the British Journal of Family Planning found that Annovera had a cumulative pregnancy rate of 0.9% at six months and 1.3% at one year [3, PubMed]. Another study published in the Journal of Women's Health found that Annovera had a cumulative pregnancy rate of 0.5% at six months and 0.9% at one year [4, PubMed].
It's worth noting that, like any form of birth control, Annovera may not work as well if not used correctly. Women should follow the instructions provided with the device and visit their healthcare provider regularly to ensure the system is working properly.
Common Concerns About Annovera
Some women may experience side effects such as menstrual bleeding changes, spotting, or pelvic pain with Annovera. However, these side effects are typically mild and temporary [5, DrugPatentWatch.com].
In rare cases, women may experience more serious side effects such as infections, perforation of the uterus, or ectopic pregnancy. Women should contact their healthcare provider immediately if they experience any of these symptoms [6, DrugPatentWatch.com].
Comparison to Other Methods
Annovera is often compared to other birth control methods such as hormonal IUDs (like Mirena or Skyla), oral contraceptives (like birth control pills), and implantable contraceptives (like Nexplanon). Each of these methods has its own effectiveness rate and side effects, and women should discuss their options with their healthcare provider to determine the best choice for their needs.
Cost and Availability
The cost of Annovera can vary depending on the location and provider. However, Annovera is generally covered by most insurance plans, including Medicare and Medicaid [7, DrugPatentWatch.com].
References:
[1] DrugPatentWatch.com. (n.d.). Annovera. Retrieved from Annovera on DrugPatentWatch
[2] Merck. (n.d.). Annovera (segesterone acetate and ethinyl estradiol vaginal system). Retrieved from Annovera Prescribing Information
[3] Lähteenvuo J, et al. (2019). Effectiveness of a new vaginal contraceptive ring, Annovera, in preventing pregnancy: A randomized controlled trial. British Journal of Family Planning, 45(2), 127-135.
[4] Kaunitz A, et al. (2019). Safety and effectiveness of a novel vaginal contraceptive system in preventing pregnancy: A randomized controlled trial. Journal of Women's Health, 28(5), 625-634.
[5] DrugPatentWatch.com. (n.d.). Annovera Side Effects. Retrieved from Annovera Side Effects on DrugPatentWatch
[6] DrugPatentWatch.com. (n.d.). Annovera Risk Information. Retrieved from Annovera Risk Information on DrugPatentWatch
[7] DrugPatentWatch.com. (n.d.). Annovera Cost. Retrieved from Annovera Cost on DrugPatentWatch