What are multiphasic oral contraceptives?
Combination birth control pills contain both estrogen and progestin and they are multiphasic or monophasic. A monophasic pill, like Alesse, will have the same dosage for the first 21 pills. The other 7 pills (of 28) are inert and are there to maintain the habit of taking them regularly. In multiphasic pills the dosage of progestin changes during the 21 days. Estrogen levels in multiphasic (this includes bi and tri-phasic) pills remain fixed. In biphasic pills there are two different levels of progestin and in triphasic there are 3. Oral Contraceptives that vary the progestin hormone levels usually manage side effects better than monophasic pills. What you should know Women who are pregnant should not take any hormonal oral contraceptives as well as recent mothers. medical conditions like heart problems, blood clots or circulatory problems related to diabetes, uterine or breast cancer (cancers related to hormones), high blood pressure, abnormal menstrual bleeding and liver problems is a
