How effective is mirena?

Answer 1

BC pills are 98% effective without a condom.

Mirena is 99% effective without a condom. Mirena is one of the most effective methods of Birth Control out there right now.

Not to 'ninja' this question, but I had the same question, and I wanted to clarify, are these numbers implying that the male can ejaculate in the female without a condom and maintain that level of effectiveness at preventing pregnancy (as you would with a condom), or are you not supposed to ejaculate in the female? Sorry if that sounds lewd, but my wife and I use the Mirena, and are genuinely trying to find out if I'm supposed to be able to ejaculate in her and have a 99% chance of preventing pregnancy, or if the intended use does not allow me to ejaculate in her and keep that 99% effectiveness? Thanks.

Yes, you can ejaculate in your wife while she is on the Mirena. That's the whole point of getting it and yes it's still 99% effective.

These percentages are for sexually active women - hopefully a woman who is non-sexually active has 100% chance of not becoming pregnant! A sexually active woman who is correctly using an effective method of BC (BCP, IUD, Depo shot, patch, ring, implant) whose partner always uses a condom has just about 100% chance of not becoming pregnant.

The Mirena works in two ways - the IUD itself alters the lining of the uterus. Next by constantly emitting a low dosage of hormones similar to those in some BCPs - cervical mucus is thick and sticky so inhospitable to sperm, the hormones also prevents the ovary from releasing eggs - no ovulation - no pregnancy.

Women who have an IUD should use a condom if they are not in a monogamous, committed relationship - having multiple partners (or having a partner who has multiple partners) increases the risk of infection that could lead to sterility.
I have been on it for 4 years now....and no pregnancy. The periods are few and far between which raises a concern to me. I do not think that it is healthy to have a period once every 4 or 5 months. The duration of it is 5 years and I am in my 4th years, so I would say that the odds are in the favor of the label description.
Mirena is an IUD or Intrauterine Device. It is a birth control alternative. No form of birth control can guarantee to be 100% effective.

See related links for more information.
Like any form of contraception there is a very small chance you can get pregnant with a Mirena coil, I understand the risk is about 1 in 1000 women using this type of contraception will get pregnant in a year. If you do get pregnant using the coil you should seek medical advice immediately as there is a chance that the baby can be harmed by the coil.
I can personally attest to getting pregnant with the Mirena. I had the Mirena in place for almost 4 years and I recently found out I was pregnant. The removal of the IUD was successful but I still ran into complications after 7 weeks the doctor could not detect a heartbeat. Last week because the sack would not pass naturally, I had to have a D and C to remove the sack. Though this may be a Horror story for me, I have read about successful pregnancies while getting pregnant with a IUD. I am now faced with what form of birth control to take when I return to my follow up appointment, but I will say I am actually considering another IUD.
Unlikely but possible if the IUD has moved without your knowledge, however you are supposed to check the threads frequently to prevent this. More effective than the pill.
Yes, it has happened to me twice. Both ended in miscarriages
can you get pregnant while on Mirena?
Mirena is an IUD or Intrauterine Device. It is a birth control alternative. No form of birth control can guarantee to be 100% effective.

See related links for more information.
Like any form of contraception there is a very small chance you can get pregnant with a Mirena coil, I understand the risk is about 1 in 1000 women using this type of contraception will get pregnant in a year. If you do get pregnant using the coil you should seek medical advice immediately as there is a chance that the baby can be harmed by the coil.
I can personally attest to getting pregnant with the Mirena. I had the Mirena in place for almost 4 years and I recently found out I was pregnant. The removal of the IUD was successful but I still ran into complications after 7 weeks the doctor could not detect a heartbeat. Last week because the sack would not pass naturally, I had to have a D and C to remove the sack. Though this may be a horror story for me, I have read about successful pregnancies while getting pregnant with a IUD. I am now faced with what form of birth control to take when I return to my follow up appointment, but I will say I am actually considering another IUD.
Unlikely but possible if the IUD has moved without your knowledge, however you are supposed to check the threads frequently to prevent this. More effective than the pill.
Yes, it has happened to me twice. Both ended in miscarriages
Yes you can, I am 5 weeks pregnant with it in place.
No birth control is 100% effective. There's always a chance that you may get pregnant.
IUDs are one of the most effective forms of birth control available. Better than 99% effective, or less than 1 out of 100 women will get pregnant each year if they use the ParaGard or the Mirena IUD.

The IUD doesn't protect against sexually transmitted infections. Using a condom along with the IUD will reduce the risk of infection.

If you have an IUD and believe you maybe pregnant you should schedule an appointment with your health care provider as soon as possible.
Yes. It is less likely, significantly less likely, but it can happen. This can happen if it is not working properly, if it is not inserted properly, or there is a defect. Also, nothing is 100% perfect, so there is still a chance that you can get pregnant.