Hormonal coil (IUS) vs Cap or diaphragm
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Overview
Rated 3.5
888 reviews
Every 3-8 years
Frequency
Over 99%
Effectiveness
None
Blood clot risk
None
Effect on fertility
Rated 3.8
16 reviews
During or before sex
Frequency
84% - 94%
Effectiveness
None
Blood clot risk
None
Effect on fertility
Hormonal coil (IUS) ingredients
Main hormones in Hormonal coil (IUS)
progestogen
Cap or diaphragm ingredients
What Lowdown reviewers say
Benefits: What this contraceptive can help with
Adenomyosis
Endometriosis
Heavy periods
Menopause
Period pain
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
Hormonal coil (IUS) reviews
888 reviews
Used for 3 - 6 mo
43 years old
🇬🇧 UK
• 2 weeks ago
I was very worried about trying this method as I’d not used hormonal contraception before but overall it has been positive. The insertion was quite painful but not unbearable. It took about a week for me to recover, with me having to stop exercise for that time and then slowly increase again. Bleeding has been the most annoying part as my periods are very irregular now (previously they were regular as clockwork) and I have light spotting for up to a week before each period. But it’s getting slightly better each month and I’m hoping I’ll be one of the lucky ones who eventually gets to little or no bleeding at all. I’ve suffered no other symptoms of note.
Top side effects not reported
0 helpful
1 comments
Used for 12 - 18 mo
35 years old
🇬🇧 UK
• 2 weeks ago
I've had the hormonal mirena for 14 months now to reduce endometriosis symptoms. My periods have reduced in length (used to be 3 weeks) and happen irregularly and the pain has settled during these. I have however noticed continuous weight gain since I went on it, despite very little changing in my diet and exercise. I've always stayed at a very stable weight and now my breast have nearly doubled in size and my weight in general continues to creep up. I have tried upping my exercise with no improvement in my weight. I'm the heaviest I've ever been, except for pregnancy. It's a huge price to pay for a reduction in endo symptoms. It's very frustrating.
Somewhat negative mood
3 more effects
0 helpful
0 comments
Used for 18 mo - 3 yr
35 years old
🇬🇧 UK
• 2 weeks ago
The insertion process wasn’t pleasant and I found very painful however I will say it was very quick and the pain didn’t last. After leaving the doctors I felt fine apart from a little light headed but that was due to me stressing. The next day if I didn’t know if had it fitted I would be none the wiser as I felt normal and had no issues. Since then I have really liked not having to think about it, I had no periods at all but have started to get a day or so of spotting once a month at the 18 month mark and some light cramps. The only other negative to me is that it’s meant that I now always have to use lube for sex as it’s definitely affected dryness. The best overall contraception I have tried
Top side effects not reported
0 helpful
0 comments
Used for 3 - 6 mo
43 years old
🇬🇧 UK
• 2 weeks ago
I was very worried about trying this method as I’d not used hormonal contraception before but overall it has been positive. The insertion was quite painful but not unbearable. It took about a week for me to recover, with me having to stop exercise for that time and then slowly increase again. Bleeding has been the most annoying part as my periods are very irregular now (previously they were regular as clockwork) and I have light spotting for up to a week before each period. But it’s getting slightly better each month and I’m hoping I’ll be one of the lucky ones who eventually gets to little or no bleeding at all. I’ve suffered no other symptoms of note.
Top side effects not reported
0 helpful
1 comments
Used for 12 - 18 mo
35 years old
🇬🇧 UK
• 2 weeks ago
I've had the hormonal mirena for 14 months now to reduce endometriosis symptoms. My periods have reduced in length (used to be 3 weeks) and happen irregularly and the pain has settled during these. I have however noticed continuous weight gain since I went on it, despite very little changing in my diet and exercise. I've always stayed at a very stable weight and now my breast have nearly doubled in size and my weight in general continues to creep up. I have tried upping my exercise with no improvement in my weight. I'm the heaviest I've ever been, except for pregnancy. It's a huge price to pay for a reduction in endo symptoms. It's very frustrating.
Somewhat negative mood
3 more effects
0 helpful
0 comments
Used for 18 mo - 3 yr
35 years old
🇬🇧 UK
• 2 weeks ago
The insertion process wasn’t pleasant and I found very painful however I will say it was very quick and the pain didn’t last. After leaving the doctors I felt fine apart from a little light headed but that was due to me stressing. The next day if I didn’t know if had it fitted I would be none the wiser as I felt normal and had no issues. Since then I have really liked not having to think about it, I had no periods at all but have started to get a day or so of spotting once a month at the 18 month mark and some light cramps. The only other negative to me is that it’s meant that I now always have to use lube for sex as it’s definitely affected dryness. The best overall contraception I have tried
Top side effects not reported
0 helpful
0 comments
Cap or diaphragm reviews
16 reviews
Used for 1 - 3 mo
26 years old
🇬🇧 UK
• 13th Dec 25
I decided to invest in the Caya diaphragm since I was determined to find a non-hormonal method I could use that wouldn’t impact sex too much (I get irritation with condoms and the copper coil moved out of place pretty much immediately). I really wanted it to work but unfortunately it was way too uncomfortable during sex. It feels like there’s just way too much ‘stuff’ inside me. And I think it obstructs my natural wetness (I suspect that’s why some people mention a lot of discharge upon removal). My partner also said while he could definitely feel it, it wasn’t uncomfortable. I’d choose condoms over the diaphragm unfortunately. Hope this helps :)
Top side effects not reported
0 helpful
0 comments
Used for 3 - 6 mo
27 years old
🇬🇧 UK
• 6th Apr 25
I’ve enjoyed using the cap around my fertile window but struggle to feel 100% confident I have inserted it correctly. When removing the cap I notice a lot of discharge but not after use, only when removing. Way better than the pill or condoms for me.
Top side effects not reported
0 helpful
0 comments
Used for 3 - 5 yr
Lowdown user
🇬🇧 UK
• 13th May 24
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
Used for 1 - 3 mo
26 years old
🇬🇧 UK
• 13th Dec 25
I decided to invest in the Caya diaphragm since I was determined to find a non-hormonal method I could use that wouldn’t impact sex too much (I get irritation with condoms and the copper coil moved out of place pretty much immediately). I really wanted it to work but unfortunately it was way too uncomfortable during sex. It feels like there’s just way too much ‘stuff’ inside me. And I think it obstructs my natural wetness (I suspect that’s why some people mention a lot of discharge upon removal). My partner also said while he could definitely feel it, it wasn’t uncomfortable. I’d choose condoms over the diaphragm unfortunately. Hope this helps :)
Top side effects not reported
0 helpful
0 comments
Used for 3 - 6 mo
27 years old
🇬🇧 UK
• 6th Apr 25
I’ve enjoyed using the cap around my fertile window but struggle to feel 100% confident I have inserted it correctly. When removing the cap I notice a lot of discharge but not after use, only when removing. Way better than the pill or condoms for me.
Top side effects not reported
0 helpful
0 comments
Used for 3 - 5 yr
Lowdown user
🇬🇧 UK
• 13th May 24
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
Used for 18 mo - 3 yr
Lowdown user
🇬🇧 UK
• 1st Jan 24
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
2 helpful
2 comments
Used for 6 - 12 mo
Lowdown user
🇬🇧 UK
• 14th Feb 23
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
Used for 1 - 3 mo
Lowdown user
🇬🇧 UK
• 2nd Dec 22
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
3 helpful
1 comments
Used for 1 - 3 mo
Lowdown user
🇬🇧 UK
• 12th May 21
Top side effects not reported
1 helpful
0 comments
Used for 3 - 6 mo
Lowdown user
🇬🇧 UK
• 23rd Aug 19
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
Used for 1 - 3 mo
Lowdown user
🇬🇧 UK
• 21st Aug 19
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
Used for 8+ yr
Lowdown user
🇬🇧 UK
• 20th Aug 19
Tried the pill in my early 20s but didn’t like the side effects, felt generally unwell and slightly “down” while taking it. Started using the cap in my mid-twenties, first one fitted at the wonderful Marie Stopes Centre, but subsequent ones refitted after two preganancies by my (female) GP. Used it for about 25 years until menopause (apart from gaps to have children). Brilliant if used properly with gel or cream, no side effects, and means when you want to attempt a pregnancy your body doesn’t have to adjust to your normal hormone levels as it does if you take the pill. Pregnant within 3 months of trying for both my preganancies.
Top side effects not reported
1 helpful
0 comments
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