Copper coil (IUD) vs Cap or diaphragm

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Copper coil (IUD)

Add your Copper coil (IUD) review

Cap or diaphragm

Add your cap or diaphragm review

Overview

Rated 3.5

571 reviews

5 - 10 years

Frequency

Over 99%

Effectiveness

None

Blood clot risk

None

Effect on fertility

Rated 3.9

14 reviews

During or before sex

Frequency

84% - 94%

Effectiveness

None

Blood clot risk

None

Effect on fertility

Copper coil (IUD) ingredients

Most copper coils are made of a T-shaped frame of polyethylene (plastic) and barium sulphate. Copper wire is wound around the vertical arm.

Cap or diaphragm ingredients

A contraceptive diaphragm or cap is a circular dome made of thin soft silicone although they come in different shapes sizes and materials. You need to use it with a gel that kills sperm called spermicide. The most common active ingredient of spermicides is nonoxynol-9.

What Lowdown reviewers say

55% no impact on mood

64% heavier periods

63% no impact

76% no impact

74% no impact on skin

Cycle return

45% in 1 month

86% no impact on mood

86% no change

93% no impact

100% no impact

75% no impact on skin

Cycle return

50% in 1 month

Benefits: What this contraceptive can help with

There are no benefits that are recognised in scientific research or guidelines for this contraceptive

There are no benefits that are recognised in scientific research or guidelines for this contraceptive

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Check out our latest reviews

Real life reviews from people like you

Copper coil (IUD) reviews

571 reviews

Copper coil (IUD)  
Used for 8+ yr
42 years old
🇬🇧 UK
  •  4 days ago

Copper coil (IUD)  

My 3rd coil now. 1st lasted years. Second one fell out and I didn’t realise so accidentally got pregnant. 3rd has extra long strings so hopefully that won’t happen again. Never had much pain during insertion or removal or any added pain any other time just slightly heavier periods. Overall have always been happy with the copper coil just need to be better at checking the strings after each period. Feel happier and have a higher sex drive while it’s in.

Read more

Very positive mood

1 more effect

1 helpful

0 comments

Copper coil (IUD)  
Used for 6 - 12 mo
41 years old
🇬🇧 UK
  •  2 weeks ago

Copper coil (IUD)  

I switched to the copper IUD after 8 years with implants and always irregular bleeding with the implant. The fitting was a little uncomfortable as expected but definitely bearable with a paracetamol taken beforehand. My first two proper periods were heavy-ish but not unmanageable (I don't remember having particularly heavy or painful periods before using implants); I felt some lower back ache and cramping for a couple of days at the beginning of each period but again this wasn't too bad, and it was nice to recognise a normal cycle after losing this when using the implant. Over the next four periods my bleeding has got a bit lighter than the first two, and I only feel occasional cramps or back ache so I'm very happy with the IUD and would definitely recommend it.


Somewhat positive mood

1 helpful

0 comments

Copper coil (IUD)  
Used for 6 - 12 mo
23 years old
🇬🇧 UK
  •  2 weeks ago

Copper coil (IUD)  

I've had copper coil since february 2024 and I feel so good that my body can have a normal cycle again after years on a pill. The insertion itself wasn't nearly as bad as people say. Yes it was a sharp cramp but it only lasted around 30 seconds and I could still talk through it so it wasn't anything traumatising. I took 800 mg of ibuprofen beforehand and that's what the doctor advised as well, it definitely helped. On the day I had it done I felt a bit weak and my lower abdomen felt as if I did a great deal of ab exercise. Nothing a couple painkillers and hot water bottle couldn't solve. My periods did become much heavier and more painful but before I had a coil they were very light and I had no pain at all so it is probably just about the same as most women experience every month. For this reason I wouldn't recommend it to people who already have heavy and painful periods but for someone like me it is manageable. I definitely feel so much better with it than a pill, sex became way more enjoyable and I'm more in tune with my body. I had the procedure done at sexual health clinic so I would recommend it over a GP. Overall very good experience and If I don't get any side effects from it over the next 5 years I will definitely do it again.


Top side effects not reported

2 helpful

0 comments

Copper coil (IUD)  
Used for 8+ yr
42 years old
🇬🇧 UK
  •  4 days ago

Copper coil (IUD)  

My 3rd coil now. 1st lasted years. Second one fell out and I didn’t realise so accidentally got pregnant. 3rd has extra long strings so hopefully that won’t happen again. Never had much pain during insertion or removal or any added pain any other time just slightly heavier periods. Overall have always been happy with the copper coil just need to be better at checking the strings after each period. Feel happier and have a higher sex drive while it’s in.


Very positive mood

1 more effect

1 helpful

0 comments

Copper coil (IUD)  
Used for 6 - 12 mo
41 years old
🇬🇧 UK
  •  2 weeks ago

Copper coil (IUD)  

I switched to the copper IUD after 8 years with implants and always irregular bleeding with the implant. The fitting was a little uncomfortable as expected but definitely bearable with a paracetamol taken beforehand. My first two proper periods were heavy-ish but not unmanageable (I don't remember having particularly heavy or painful periods before using implants); I felt some lower back ache and cramping for a couple of days at the beginning of each period but again this wasn't too bad, and it was nice to recognise a normal cycle after losing this when using the implant. Over the next four periods my bleeding has got a bit lighter than the first two, and I only feel occasional cramps or back ache so I'm very happy with the IUD and would definitely recommend it.


Somewhat positive mood

1 helpful

0 comments

Copper coil (IUD)  
Used for 6 - 12 mo
23 years old
🇬🇧 UK
  •  2 weeks ago

Copper coil (IUD)  

I've had copper coil since february 2024 and I feel so good that my body can have a normal cycle again after years on a pill. The insertion itself wasn't nearly as bad as people say. Yes it was a sharp cramp but it only lasted around 30 seconds and I could still talk through it so it wasn't anything traumatising. I took 800 mg of ibuprofen beforehand and that's what the doctor advised as well, it definitely helped. On the day I had it done I felt a bit weak and my lower abdomen felt as if I did a great deal of ab exercise. Nothing a couple painkillers and hot water bottle couldn't solve. My periods did become much heavier and more painful but before I had a coil they were very light and I had no pain at all so it is probably just about the same as most women experience every month. For this reason I wouldn't recommend it to people who already have heavy and painful periods but for someone like me it is manageable. I definitely feel so much better with it than a pill, sex became way more enjoyable and I'm more in tune with my body. I had the procedure done at sexual health clinic so I would recommend it over a GP. Overall very good experience and If I don't get any side effects from it over the next 5 years I will definitely do it again.


Top side effects not reported

2 helpful

0 comments


Cap or diaphragm reviews

14 reviews

Cap or diaphragm  
Used for 3 - 5 yr
28 years old
🇬🇧 UK
  •  13th May 24

Cap or diaphragm  

Apart from the issue I'm currently dealing with (it getting stuck inside of me), I LOVE the diaphragm. I found out I wasn't never fitted (which is why it kept getting stuck upon removal), so my new, awesome doctor actually sized me. It's easier than popping in a tampon once you learn how to do it and then ya pop it out the morning after sex. No side effects, no hormones, no emotional hangover. It's very hard to find though. Pharmaceutical companies don't want women to buy one silicone object that lasts for the rest of your life, so finding the right size and actually getting it has been a challenge. My mom used it and only got pregnant to have me (her only child) and I've been using it for 5+ years with no issues.


Top side effects not reported

0 helpful

0 comments

Cap or diaphragm  
Used for 18 mo - 3 yr
34 years old
🇬🇧 UK
  •  1st Jan 24

Cap or diaphragm  

I've used Caya several times over the past couple years (they last up to 2 years- due for a new one now). I use it on the edges of my fertile window (with fertility awareness) and/or combined with withdrawal or condoms to boost efficacy during the fertile window. Always use with Caya/Contragel- they come with an applicator to re-insert the gel into the vagina, as you need to reapply the gel each time you have sex. Watching the YouTube instructions on how to put it in (plus the instruction manual in the box!) helped me understand how to use it properly and to have an idea of how it was inserted properly.


Top side effects not reported

0 helpful

1 comments

Cap or diaphragm  
Used for 6 - 12 mo
34 years old
🇬🇧 UK
  •  14th Feb 23

Cap or diaphragm  

I used the caya cap. It has been a game changer after previously taking the pill. I feel in control, no need to remember to take a pill, just put it in when needed. Better than condoms as it is women based and not detectable. Effect of not taking hormonal contraceptives has been amazing. All the side effects that I had ( migraines, reduced sex drive, dryness, breast tenderness, strong period pains, breakthrough bleeding and emotionalness) all gone. I wish someone had told me about it before!


Very positive mood

2 more effects

1 helpful

1 comments

Cap or diaphragm  
Used for 3 - 5 yr
28 years old
🇬🇧 UK
  •  13th May 24

Cap or diaphragm  

Apart from the issue I'm currently dealing with (it getting stuck inside of me), I LOVE the diaphragm. I found out I wasn't never fitted (which is why it kept getting stuck upon removal), so my new, awesome doctor actually sized me. It's easier than popping in a tampon once you learn how to do it and then ya pop it out the morning after sex. No side effects, no hormones, no emotional hangover. It's very hard to find though. Pharmaceutical companies don't want women to buy one silicone object that lasts for the rest of your life, so finding the right size and actually getting it has been a challenge. My mom used it and only got pregnant to have me (her only child) and I've been using it for 5+ years with no issues.


Top side effects not reported

0 helpful

0 comments

Cap or diaphragm  
Used for 18 mo - 3 yr
34 years old
🇬🇧 UK
  •  1st Jan 24

Cap or diaphragm  

I've used Caya several times over the past couple years (they last up to 2 years- due for a new one now). I use it on the edges of my fertile window (with fertility awareness) and/or combined with withdrawal or condoms to boost efficacy during the fertile window. Always use with Caya/Contragel- they come with an applicator to re-insert the gel into the vagina, as you need to reapply the gel each time you have sex. Watching the YouTube instructions on how to put it in (plus the instruction manual in the box!) helped me understand how to use it properly and to have an idea of how it was inserted properly.


Top side effects not reported

0 helpful

1 comments

Cap or diaphragm  
Used for 6 - 12 mo
34 years old
🇬🇧 UK
  •  14th Feb 23

Cap or diaphragm  

I used the caya cap. It has been a game changer after previously taking the pill. I feel in control, no need to remember to take a pill, just put it in when needed. Better than condoms as it is women based and not detectable. Effect of not taking hormonal contraceptives has been amazing. All the side effects that I had ( migraines, reduced sex drive, dryness, breast tenderness, strong period pains, breakthrough bleeding and emotionalness) all gone. I wish someone had told me about it before!


Very positive mood

2 more effects

1 helpful

1 comments

Cap or diaphragm  
Used for 1 - 3 mo
37 years old
🇬🇧 UK
  •  2nd Dec 22

Cap or diaphragm  

Having experienced terrible physical and mental health side effects from both types of contraceptive pill (Combined and POP), and permanent pain and repeated UTIs with the copper coil, I hoped that Caya diaphragm would be a suitable non-hormonal method to try. Unfortunately, I found insertion very tricky - it seems I have a case of "deep vagina, small fingers", as I could never tell whether I'd pushed the diaphragm up far enough to cover my cervix, and sex was always a bit uncomfortable. I'm naturally prone to cystitis and thrush, and getting both while using the diaphragm also put me off using it long term. However, on the plus side - I didn't get pregnant (though I was still breastfeeding a lot, and my periods hadn't yet returned postpartum), and I did manage to avoid the hormonal depression, skin changes and weight gain/loss that I've experienced in the past with pills.


Top side effects not reported

2 helpful

0 comments

Cap or diaphragm  
Used for 1 - 3 mo
Lowdown user
🇬🇧 UK
  •  12th May 21

Cap or diaphragm  

All in all it was acceptable


Top side effects not reported

0 helpful

0 comments

Cap or diaphragm  
Used for 3 - 6 mo
Lowdown user
🇬🇧 UK
  •  23rd Aug 19

Cap or diaphragm  

Fiddly and a faff. Didn’t bother a couple of times and ended up pregnant. He’s nearly 20 now and I’m still married to his father so not all bad :) Tried the copper coil for a bit after but it gave me very heavy periods and stomach cramps which had never been a problem before. Switched to the mirena coil and now on my third - no periods for 15 years and no menopausal symptoms despite being 52. What’s not to like?


Top side effects not reported

1 helpful

0 comments

Cap or diaphragm  
Used for 1 - 3 mo
Lowdown user
🇬🇧 UK
  •  21st Aug 19

Cap or diaphragm  

I was only using it shortly, as I wanted to avoid hormones. It was not bad, but the need of using a spermicide as well was the reason why I stopped, I had vaginal discharge caused by the spermicide.


Top side effects not reported

0 helpful

0 comments

Cap or diaphragm  
Used for 12 - 18 mo
Lowdown user
🇬🇧 UK
  •  20th Aug 19

Cap or diaphragm  

As someone who has struggled with more mainstream contraception, this was a miracle. Zero side effects and non-invasive! You're able to insert it up to two hours before sex so it doesn't have the moodkiller effect of a condom, and neither partner can feel it once it's in, unless you're searching for it with a finger. Inserting and removing it takes a little getting used to, but the initial learning curve is very much worth it. (And any Mooncup users will find it easy enough.) Note you will need to be fitted by a nurse/ health practitioner to ensure its effectiveness. This can be tricky to find unless you live in a larger city/ you have a very thorough doctor, but it was worth persisting for me.


Top side effects not reported

0 helpful

0 comments

Cap or diaphragm  
Used for 3 - 5 yr
Lowdown user
🇬🇧 UK
  •  20th Aug 19

Cap or diaphragm  

A bit fiddly until I got used to it.


Top side effects not reported

0 helpful

0 comments

Cap or diaphragm  
Used for 12 - 18 mo
Lowdown user
🇬🇧 UK
  •  20th Aug 19

Cap or diaphragm  

After bad experiences with the pill I wanted to avoid hormonal contraception, and did not think the coil was right for me. The diaphragm is therefore the only method of contraception (other than condoms) that I found available. I got it fitted at a local sexual health clinic fine - although I did have to ring up to request that my appointment was with someone trained with fitting it, as not everyone can do this. There were a few different sizes to make sure you get one that fits you. It's a bit tricky to get the hang of putting it in and taking it out at first, but if you're used to fiddling with a mooncup you'll pick it up. It's good when you have planned when you need to use it, as you can insert it a couple of hours before and not have to worry about it in the moment. My partner says he can feel it but it's usually not uncomfortable for him - occasionally when I'm on top. As someone who has had a lot of UTIs, I was a bit worried about the increased risk of cystitis (because the rim sits against your bladder) but have never got it when using the diaphragm. The downside is that it requires a bit of extra planning, so if I'm lazy I end up just using condoms instead. Also it's pretty gross when you take it out after leaving it in overnight, and a load of stinky semen-spermicide goo comes out! All in all, a bit of a faff but I'd way rather use this than hormonal contraception. I only use this occasionally as a result. I wish there was a really good non hormonal, non coil option out there!


Top side effects not reported

5 helpful

0 comments

Contraceptive alternatives and comparisons

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