Contraception Reviews

Copper IUD vs Cap or diaphragm

Copper IUD

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Cap or diaphragm

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Overview

Rated 3.4

24 reviews

5 - 10 years

Frequency

Over 99%

Effectiveness

None

Blood clot risk

None

Effect on fertility

Rated 3.7

3 reviews

Before sex

Frequency

71% - 94%

Effectiveness

None

Blood clot risk

None

Effect on fertility

Copper IUD ingredients

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 birth control diaphragm or cap is a reusable barrier method of birth control that is inserted into the vagina before sex. It is covered in spermicide (a gel that kills sperm) and prevents pregnancy by covering the cervix so sperm can’t get into the womb. There are a few things that can make the diaphragm or cap less effective. These include if it doesn't fit properly
you remove it too early
it is damaged
you forget to use spermicide
or it is used with other oil-based products. If these things happen you may need to use emergency birth control.

What Lowdown reviewers say

Mood

38% no impact on mood

Bleeds

71% heavier periods

Sex drive

58% no impact

Weight

71% no impact

Skin

71% no impact on skin

Cycle return

43% in 1 month

Mood

67% no impact on mood

Bleeds

100% no change

Sex drive

67% no impact

Weight

100% no impact

Skin

100% no impact on skin

Cycle return

Not enough data to say

Benefits: What this birth control can help with

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

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

Try it now

Want to switch birth control?

Try it now

Want to switch birth control?

Check out our latest reviews

Real life reviews from people like you

Copper IUD reviews

24 reviews

Copper IUD  
Used for 1 - 3 mo
24 years old
🇺🇸 US
  •  2 weeks ago

Paragard IUD  

So, I’ve had this IUD placed twice. The first time, I had an expulsion and had no clue. Didn’t feel anything. Went for a follow up and she said it was hanging out, to my surprise. I have had it placed again and so far so good. No pain on insertion either time since my provider used Lidocaine. The only issue I find is that my sex drive basically disappears for some reason. Other than that, no complaints.

Read more

Decreased sex drive

0 helpful

0 comments

Copper IUD  
Used for 3 - 5 yr
46 years old
🇺🇸 US
  •  6th Jan 26

Paragard IUD  

It worked and I didn’t have to worry. Only issue was my periods were soooooo heavy it made me severely anemic. After about 3-4 years I had to take it out and my periods were lighter and my anemia got better


Somewhat negative mood

0 helpful

0 comments

Copper IUD  
Used for 5 - 8 yr
47 years old
🇺🇸 US
  •  6th Aug 25

Paragard IUD  

Cooper IUD is very effective for me, i experienced a lot of virginal discharge at first, then reduced after some years and then it increased again sometimes thick and yellow though at checking, I don't have any infection. I have also stopped periods in the last few months, may be it is menopause since I am 48.


Very positive mood

1 more effect

0 helpful

0 comments

Copper IUD  
Used for 1 - 3 mo
24 years old
🇺🇸 US
  •  2 weeks ago

Paragard IUD  

So, I’ve had this IUD placed twice. The first time, I had an expulsion and had no clue. Didn’t feel anything. Went for a follow up and she said it was hanging out, to my surprise. I have had it placed again and so far so good. No pain on insertion either time since my provider used Lidocaine. The only issue I find is that my sex drive basically disappears for some reason. Other than that, no complaints.


Decreased sex drive

0 helpful

0 comments

Copper IUD  
Used for 3 - 5 yr
46 years old
🇺🇸 US
  •  6th Jan 26

Paragard IUD  

It worked and I didn’t have to worry. Only issue was my periods were soooooo heavy it made me severely anemic. After about 3-4 years I had to take it out and my periods were lighter and my anemia got better


Somewhat negative mood

0 helpful

0 comments

Copper IUD  
Used for 5 - 8 yr
47 years old
🇺🇸 US
  •  6th Aug 25

Paragard IUD  

Cooper IUD is very effective for me, i experienced a lot of virginal discharge at first, then reduced after some years and then it increased again sometimes thick and yellow though at checking, I don't have any infection. I have also stopped periods in the last few months, may be it is menopause since I am 48.


Very positive mood

1 more effect

0 helpful

0 comments


Cap or diaphragm reviews

3 reviews

Cap or diaphragm  
Used for 18 mo - 3 yr
24 years old
🇺🇸 US
  •  17th Apr 25

FemCap  

I’ve been using the FemCap for years now and honestly, I’m so impressed. It’s non-hormonal, super discreet, and once you get the hang of insertion, it’s incredibly easy to use. Highly recommend it to anyone looking for a hormone-free option.


Top side effects not reported

1 helpful

0 comments

Cap or diaphragm  
Used for 1 - 3 mo
36 years old
🇺🇸 US
  •  7th Jan 25

FemCap  

I had to come off hormonal contraception due to health reasons so needed a barrier method. It was quite awkward to insert and always had to keep checking it in case it dislodged itself, was sometimes painful or uncomfortable, my partner could feel it. I was also using an approved spermicide with it but still became pregnant within a month of use.


Somewhat negative mood

1 more effect

0 helpful

0 comments

Cap or diaphragm  
Used for 1 - 3 mo
Lowdown user
🇺🇸 US
  •  21st Sep 23

Caya  

My very favorite thing about the Caya is that there really are no side effects. I am not putting anything into my body that is changing the way my body functions- I put it in, leave it in a while, and then I remove it. No hormones, nothing! I’ve been advised that while the Caya can be 80+% effective when used correctly, it’s best to use it with spermicide and condoms. It is tricky to insert the first few times but super easy to remove and I quickly got the hang of a quick and easy insertion! I did find it really difficult to find a pharmacy that sold the Caya (I guess they aren’t as popular now)- but all in all, it’s been fantastic so far! I love that my body gets to function as it normally would but that the Caya helps prevent pregnancy


Top side effects not reported

2 helpful

0 comments

Cap or diaphragm  
Used for 18 mo - 3 yr
24 years old
🇺🇸 US
  •  17th Apr 25

FemCap  

I’ve been using the FemCap for years now and honestly, I’m so impressed. It’s non-hormonal, super discreet, and once you get the hang of insertion, it’s incredibly easy to use. Highly recommend it to anyone looking for a hormone-free option.


Top side effects not reported

1 helpful

0 comments

Cap or diaphragm  
Used for 1 - 3 mo
36 years old
🇺🇸 US
  •  7th Jan 25

FemCap  

I had to come off hormonal contraception due to health reasons so needed a barrier method. It was quite awkward to insert and always had to keep checking it in case it dislodged itself, was sometimes painful or uncomfortable, my partner could feel it. I was also using an approved spermicide with it but still became pregnant within a month of use.


Somewhat negative mood

1 more effect

0 helpful

0 comments

Cap or diaphragm  
Used for 1 - 3 mo
Lowdown user
🇺🇸 US
  •  21st Sep 23

Caya  

My very favorite thing about the Caya is that there really are no side effects. I am not putting anything into my body that is changing the way my body functions- I put it in, leave it in a while, and then I remove it. No hormones, nothing! I’ve been advised that while the Caya can be 80+% effective when used correctly, it’s best to use it with spermicide and condoms. It is tricky to insert the first few times but super easy to remove and I quickly got the hang of a quick and easy insertion! I did find it really difficult to find a pharmacy that sold the Caya (I guess they aren’t as popular now)- but all in all, it’s been fantastic so far! I love that my body gets to function as it normally would but that the Caya helps prevent pregnancy


Top side effects not reported

2 helpful

0 comments

Birth control alternatives and comparisons

Compare the Copper IUD with other birth control

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