Triphasic oral contraceptives are a type of birth control pill that contain a combination of two female sex hormones: estrogen and progestin. They differ from other combination birth control pills in the way the hormone levels are delivered throughout the 21-day pill cycle.
Here's a breakdown of triphasic oral contraceptives:
How they work:
Triphasic pills contain three different tiers or phases of hormone levels. Each pill within a 21-day pack has a slightly different amount of estrogen and progestin. These hormones work together to prevent pregnancy in three ways:
- Ovulation suppression: They prevent the ovaries from releasing an egg each month.
- Thickening cervical mucus: They thicken the mucus in the cervix, making it more difficult for sperm to reach the egg.
- Thinning the uterine lining: They thin the lining of the uterus (endometrium), making it less likely that a fertilized egg could implant.
Benefits:
- Potential for fewer side effects: The varying hormone levels throughout the cycle may lead to fewer side effects compared to monophasic pills (constant hormone level) for some users. This can include reduced nausea, breast tenderness, and mood swings.
- Cycle control: Triphasic pills can help regulate menstrual periods and potentially make them lighter.
Things to consider:
- Not for everyone: Triphasic pills may not be suitable for all women, especially those with certain medical conditions or a history of blood clots.
- Following the regimen precisely is crucial: Missing pills or taking them out of order can significantly reduce their effectiveness in preventing pregnancy.
- Need a prescription: Triphasic contraceptives are prescription medications, so you'll need to consult a doctor to determine if they are right for you.
Examples of triphasic oral contraceptives:
- Ortho Novum 7/7/7 (discontinued in some countries)
- Trinovum (discontinued in some countries)
- Enpresse
- Trivora