What is Vienva?
Vienva is a combined birth control pill that’s used to stop you from getting pregnant. It’s over 99% at preventing pregnancy when it’s used correctly, according to instructions.
The hormones that Vienva uses to prevent pregnancy are Levonorgestrel and Ethinyl Estradiol. It’s a lower-dose alternative to some other types of birth control which means that it’s less likely to cause the hormonal side effects that can be associated with some birth control pills.
It’s known as a ‘mono-phasic’ birth control method as it contains consistent levels of hormones in active pills. Vienva comes in packs of 28 so that you don’t have to worry about remembering to take a break in your cycle, but you’ll still have a break in hormones to have a period.
How does Vienva work?
It works by preventing the release of an egg during your menstrual cycle and changes the conditions in your vagina and womb to prevent an egg from fertilizing. It makes your cervical fluid thicker so that sperm can’t get through and prevents your womb lining from building up. This means that an egg can’t implant there, which signals the start of a pregnancy.
Birth control can also help to make your periods lighter and more regular - this can be really helpful if you have heavy periods or an irregular cycle.
Vienva doesn’t protect you or your partner from sexually transmitted diseases, it just reduces the risk of pregnancy. Barrier birth control methods like condoms are the only way to prevent sexually transmitted diseases, though these aren’t always 100% effective.
What doses of Vienva are there?
Vienva birth control pills contain 0.1mg of Levonorgestrel and 0.2mg Ethinyl Estradiol. In each pack of 28 pills there are 21 active pills that contain these hormones and 7 inactive pills that have no effect. This means that although you take this birth control continuously, you have a dose of hormones for 21 days out of the 28 with the remaining 7-day break allowing you to have a period. This means you don’t have to keep track of dates or when to restart a pack of pills.
There are other birth control pills that work in a similar mono-phasic way to Vienva, but contain higher doses of the active ingredients. Another alternative is a biphasic or triphasic birth control pills that stage hormone levels throughout the month. If this is what you’re looking for then, you’ll need to switch to a different type of birth control pill.