Cap or diaphragm vs Injection

Need help choosing? Speak to a doctor
Cap or diaphragm

Add your cap or diaphragm review

Injection

Add your Injection review

Overview

Rated 3.8

16 reviews

During or before sex

Frequency

84% - 94%

Effectiveness

None

Blood clot risk

None

Effect on fertility

Rated 2.9

310 reviews

Every 2-3 months

Frequency

94% - 99+%

Effectiveness

None

Blood clot risk

Short term

Effect on fertility

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.

Injection ingredients

Main hormones in Injection

progestogen

What Lowdown reviewers say

88% no impact on mood

88% no change

94% no impact

100% no impact

83% no impact on skin

Cycle return

50% in 1 month

31% somewhat negative

70% stopped periods

57% lost sex drive

48% gained weight

46% no impact on skin

Cycle return

42% don’t know impact

Benefits: What this contraceptive can help with

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

Endometriosis

Heavy periods

Period pain

Try it now

Add your cap or diaphragm review

Try it now

Add your Injection review

Check out our latest reviews

Real life reviews from people like you

Cap or diaphragm reviews

16 reviews

Cap or diaphragm  
Used for 1 - 3 mo
26 years old
🇬🇧 UK
  •  13th Dec 25

Cap or diaphragm  

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 :)

Read more

Top side effects not reported

0 helpful

0 comments

Cap or diaphragm  
Used for 3 - 6 mo
27 years old
🇬🇧 UK
  •  6th Apr 25

Cap or diaphragm  

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

Cap or diaphragm  
Used for 3 - 5 yr
Lowdown user
🇬🇧 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 1 - 3 mo
26 years old
🇬🇧 UK
  •  13th Dec 25

Cap or diaphragm  

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

Cap or diaphragm  
Used for 3 - 6 mo
27 years old
🇬🇧 UK
  •  6th Apr 25

Cap or diaphragm  

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

Cap or diaphragm  
Used for 3 - 5 yr
Lowdown user
🇬🇧 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


Injection reviews

310 reviews

Injection  
Used for 6 - 12 mo
21 years old
🇬🇧 UK
  •  3 days ago

Depo-Provera injection  

I went on the depo injection due to the mini pill making my IBS constipation symptoms worse and the doctor saying this would be better. For first 6 months, no side effects. It did level out my moods and constipation, but it gave me vaginal dryness and a loss of sex drive after 9 months of being on it.


Somewhat positive mood

3 more effects

0 helpful

0 comments

Injection  
Used for 1 - 3 mo
29 years old
🇬🇧 UK
  •  2 weeks ago

Depo-Provera injection  

I got with a new partner a few years back and gave this ago as I wanted something I didn’t need to remember to take. I gained weight fast, I had mood changes, my skin broke out badly, my periods were heavier than before. I only ever had one injection then stopped as I no longer needed it and I didn’t like how it made me feel. Unfortunately I had a rare side effect where it stopped my periods/ovulation all together for 12 months I was referred to gynaecology at 6 months and luckily after all the scans everything was normal and by month 12 my cycle returned without needing to be medically induced. This is not a horror story but important that you could react the same or if you are reacting the same please get referred to gynaecology and hopefully your periods will return 🤍


Somewhat negative mood

2 more effects

0 helpful

0 comments

Injection  
Used for 5 - 8 yr
46 years old
🇬🇧 UK
  •  3 weeks ago

Sayana Press injection  

Having used both Depot and Sanaya Press, these are the best method of contraception. No side effect and a huge positive: no periods.


Top side effects not reported

0 helpful

0 comments

Injection  
Used for 6 - 12 mo
21 years old
🇬🇧 UK
  •  3 days ago

Depo-Provera injection  

I went on the depo injection due to the mini pill making my IBS constipation symptoms worse and the doctor saying this would be better. For first 6 months, no side effects. It did level out my moods and constipation, but it gave me vaginal dryness and a loss of sex drive after 9 months of being on it.


Somewhat positive mood

3 more effects

0 helpful

0 comments

Injection  
Used for 1 - 3 mo
29 years old
🇬🇧 UK
  •  2 weeks ago

Depo-Provera injection  

I got with a new partner a few years back and gave this ago as I wanted something I didn’t need to remember to take. I gained weight fast, I had mood changes, my skin broke out badly, my periods were heavier than before. I only ever had one injection then stopped as I no longer needed it and I didn’t like how it made me feel. Unfortunately I had a rare side effect where it stopped my periods/ovulation all together for 12 months I was referred to gynaecology at 6 months and luckily after all the scans everything was normal and by month 12 my cycle returned without needing to be medically induced. This is not a horror story but important that you could react the same or if you are reacting the same please get referred to gynaecology and hopefully your periods will return 🤍


Somewhat negative mood

2 more effects

0 helpful

0 comments

Injection  
Used for 5 - 8 yr
46 years old
🇬🇧 UK
  •  3 weeks ago

Sayana Press injection  

Having used both Depot and Sanaya Press, these are the best method of contraception. No side effect and a huge positive: no periods.


Top side effects not reported

0 helpful

0 comments

Injection  
Used for 1 - 3 mo
20 years old
🇬🇧 UK
  •  3rd Apr 26

Depo-Provera injection  

This has made my sex life a living hell .I get scared to have sex with my partner since I associate the vaginal dryness with this Depo shot ,the sex is always pain towards the end as there’s not enough lubrication


Very negative mood

2 more effects

0 helpful

0 comments

Injection  
Used for 6 - 12 mo
22 years old
🇬🇧 UK
  •  14th Feb 26

Noristerat injection  

This was bad experience my stretch marks even increased and low libido is the worst


Very negative mood

3 more effects

0 helpful

0 comments

Injection  
Used for 18 mo - 3 yr
37 years old
🇬🇧 UK
  •  3rd Feb 26

Sayana Press injection  

I would have rated this 5 stars last year. I used to be on the depo jab that had to be done at the doctors but I work 12 hour shifts meaning it was a struggle to attended every 12 weeks. So I was over the moon when I found out about sayana press that I could do myself. I usually do the injection around 11 weeks but the last 3 times I get to 10 weeks and get crippling period pain that completely debilitates me. Even after I’ve done the injection this will continue for about a week afterwards. I’ve never experienced child birth but the pain is horrendous. It will wake me up in the middle of the night, happen at work and is just completely random spouts of unbearable pain until at whatever point doesn’t happen again until I am next at the 10 week mark. I’ve recently learned that it’s a lower strength to Depo-Provera and maybe that’s why however I’m confused as to why it’s only started happening. My gp surgery is useless and it the whole process of going back to having the higher strength at the surgery is going to take some time but being able to do it at home is not worth this horrendous ordeal. I would not recommend switching


Top side effects not reported

0 helpful

1 comments

Injection  
Used for 5 - 8 yr
31 years old
🇬🇧 UK
  •  3rd Jan 26

Sayana Press injection  

Great if you’re looking to prevent pregnancy with less admin. Having the year’s supply ant home and not needing to see a doctor every few months was handy. Stopped my periods aside from some very minimal spotting and my skin was great - I barely had any spots over the years I was on it. I did feel like I was quite numb emotions wise. I didn’t experience mood swings but it was alarming that I often didn’t really feel anything! My libido was extremely low too.


Somewhat negative mood

3 more effects

0 helpful

0 comments

Injection  
Used for 12 - 18 mo
Lowdown user
🇬🇧 UK
  •  1st Dec 25

Noristerat injection  

I experience mood swings, low libido, aura migraine, my face got darker than usual and I stopped seeing my period.


Very negative mood

3 more effects

0 helpful

0 comments

Injection  
Used for 12 - 18 mo
24 years old
🇬🇧 UK
  •  18th Nov 25

Noristerat injection  

I had a very bad experience using this contraceptive. Bad moods, bad skin, bad body image, depression, sweating, low libido. Just bad.


Very positive mood

3 more effects

1 helpful

0 comments

Injection  
Used for 3 - 5 yr
23 years old
🇬🇧 UK
  •  16th Oct 25

Noristerat injection  

It's a good injection for me, I have been using it for longest time since I was 16 years started to use it. Who recommended it? Clinic nurse.


Decreased sex drive

0 helpful

0 comments

Contraceptive alternatives and comparisons

Compare the Cap or diaphragm with other contraceptives

Order online

Order online now

Use our online prescription in under 5 mins

  • No GP appointment needed

  • Free standard delivery

Speak to a doctor

Not sure yet? Speak to a doctor

Schedule an appointment now

87% of women are happier with their contraceptive choice after speaking with one of The Lowdown's doctors

The Lowdown Footer

Women's health, reviewed.

Get the best women’s health info in your inbox

You are signing up to receive The Lowdown's latest findings and news in women's health. Your data will be used in accordance with our Privacy & Cookie policy

Built by doctors and experts

Our tools are made by medical professionals for your peace of mind

Our website uses affiliate links and we may earn a small commission if you click on them