Combined Pills: These pills contain the female hormones estrogen and progestin. Estrogen is usually in the form of ethinyl estradiol while the progestin may be in different forms such as levonorgestrel, desogestrel, norgestimate or gestodene.
Combined pills are available in 2 different packs, the 21-day pack and the 28-day pack. The 28-day pack contains both the hormones in the first 21 pills and the last 7 pills have no hormones and are referred to as the spacer pills. In some packs, these spacer tablets contain iron. The pills are to be consumed daily at the same time. The common brands available in the US market are Levlite, Alesse, Mircette and LoEstrin while those in the Indian market are Mala D, Ovral, Novelon and Femilon.
Newer forms of combined pills are now available. Some contain hormones for a longer duration of 24 days and spacer pills for 4 days. These packs reduce the duration of bleeding. Chewable combined pills are available in some countries. Some hormonal pills can be taken continuously for 12 weeks followed by a week of spacer pills or very low dose estrogen. This results in bleeding only 4 times per year.
Phased Pills: Phased pills may be either biphasic or triphasic. In these pills the estrogen dose is kept more or less constant while the progestin dose is pregressively increased in the later stages of the cycle. Common triphasic pills are Triquilar and 3-Phase.
Minipill: Minipills contain only a low dose of progesterone. They are not as effective as a combined pill. An example of a minipill is Ovrette.
Morning After Pill: This pill is used after sexual intercourse to prevent pregnancy. It contains a progestin either as 1 or 2 tablets. It is available in brands such as as I-pill, Oops and pill 72.
What is New in Birth Control Pills?
1. Do Women Choose Effective Birth Control Methods?Women tend to choose more effective and long-term birth control methods when cost is not an issue, reveals a new study. Women are twice more likely to use more effective contraceptive methods. Forty-five percent of all pregnancies in the United States are unintended.Read More..
2. Texas: A Big Market for Birth Control AppsOral contraceptive pills or birth control pills can now be purchased through an app called Nurx without seeing a doctor in person. NURX, a San Francisco-based company provides various types of hormonal contraception. Women in Texas can purchase birth control pills through Nurx without seeing a doctor in person. Read More..
Latest Publications and Research on Birth Control PillsDiminished ovarian reserve and poor response to stimulation in patients <38 years old: a quantitative but not qualitative reduction in performance. - Published by PubMed
Sex hormones and venous thromboembolism - from contraception to hormone replacement therapy. - Published by PubMed
Contraceptive use and reproductive intentions among women requesting contraceptive counseling. - Published by PubMed
Non-genetic and genetic risk factors for adult cerebral venous thrombosis. - Published by PubMed
Diminished ovarian reserve and poor response to stimulation in patients <38 years old: a quantitative but not qualitative reduction in performance. - Published by PubMed