Biphasic contraceptive pills are an effective but rarely used method of contraception. When deciding on two-phase pills, you should strictly follow the order in which you take them. However, biphasic hormone pills also have advantages - they mimic the natural hormone cycle. How exactly do two-phase pills work? Who are they suitable for? How to use them? When to start taking them?

Biphasic contraceptive pillsare pills that have the same dose of synthetic estrogen but different levels of synthetic progestogen - this is different from monophasic pills that have the same concentration of both hormones.

Two-phase contraceptive pills - how do they work?

The package contains 21 tablets - 11 white and 10 pink tablets. These are combined contraceptive pills, i.e. those containing synthetic equivalents of two hormones - estrogen (ethinylestradiol) and progestogen (levonorgestrel). All 21 pills contain the same dose of ethinylestradiol but different doses of levonorgestrel. The first 11 white pills contain a low concentration of synthetic progesterone (taken in the first phase of the cycle), and the next 10 pink pills contain more of it (taken in the second phase of the cycle). This division reflects the natural cycle of hormone secretion and changes in their concentrations.

Biphasic pillsinhibit ovulation, contribute to thickening of the mucus in the cervix, making it impervious to sperm, and cause changes in the endometrium that result in she does not accept a fertilized egg.

Two-phase contraceptive pills - indications

The biphasic contraceptive pill is most suitable for women who have irregular, heavy and painful periods and / or struggle with PMS, as they help to reduce bleeding and pain as well as PMS-related discomforts.

Two-phase contraceptive pills - when to start taking?

Take the first tablet on the first day of the cycle, i.e. on the first day of menstruation. You can also start the pack between the 2nd and 5th day of the cycle, but then you should use an additional method of contraception (e.g. a condom) for the first 7 days of tablet-taking (on the firstcycle).

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Two-phase contraceptive pills - how to use?

The biphasic contraceptive pillshould be taken at the same time every day for 21 days. Take the tablets one by one, first in the first series and then in the second. Next to each tablet there is a symbol of the day of the week it should be taken.

Important

The order in which you take each biphasic contraceptive pill is very important. Mistakes can cause ovulation, and thus pregnancy.

After 21 days, you should take a 7-day break in taking them, during which the so-called withdrawal bleeding. The contraceptive effect also continues during this one-week break.

Take the first tablet of the next pack on day 8, even if the bleeding is still ongoing.

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