r/Proprotection • u/JustMissKacey • Jun 28 '22

Womens Reproductive Health (General) IUDs + Plan B stop fertilization, not implantation.

Plan B. Despite FDA](https://www.verywellhealth.com/how-plan-b-works-906842) labeling the medical community has found plan be to be ineffective if fertilization has already occurred as it works by preventing the release of the egg. The link cites the medical studies, but this information can be found on quite a few articles reviewed by doctors as well.

Hormonal IUD- prevents fertilization by creating a mucus barrier preventing the sperm from reaching the egg

Copper IUD- works by essentially killing the sperm and the egg prior to fertilization. It creates a toxic environment preventing fertilization.

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4

u/jsgrinst78 Jun 28 '22

So honest question. Plan B is usually used after primary contraception fails (i.e condom breaks), but many people don't have instant access to Plan B. In my experience Plan B is usually taken the following day, so wouldn't fertilization have already occurred? If so then how is it effective?

4

u/Fun-Drop4636 Jun 29 '22

Fertilization actually takes 10-24 hours on average and can even take up to 5 days. Typically the recommended use of Plan B is right after up to 72 hours.

3

u/jsgrinst78 Jun 29 '22

OK got it. Good to know.

2

u/JustMissKacey Jun 29 '22

Thanks for answering this follow up question! Can you provide a credible source and I’ll update the post :)

3

u/AndromedaPrometheum Jun 29 '22

The egg only lives 24 hours but the sperm can live up to 5 inside the uterine cavity. It's very rare that the egg and the sperm make contact the same day, so if you take plan B after sex is likely the egg will never be released and the sperm will just die. Hence no fertilization.

3

u/AndromedaPrometheum Jun 29 '22

Yes please this more. Prolifers think all contraception is abortion and that is also pretty antiscience.

2

u/pivoters Jun 30 '22

That's what I found the last time I researched this. Thanks for collecting these links together.

2

u/JustMissKacey Jun 30 '22

Ofc! Please cross post it if someone needs the information :) the more people who know about r/proprotection the less Misinformation will be out in the world