Diaphragms

A diaphragm is a barrier method of contraception used to prevent pregnancy. It is a soft silicone device that has a flexible rim.

A diaphragm is placed in the vagina so that it covers the cervix. It acts as a barrier to stop sperm from entering the uterus and fertilising an egg.

Things to consider

• It is a good idea to see a doctor or nurse to be taught how to insert a diaphragm correctly and to make sure it fits properly.
• It is a good idea to practice inserting and removing the diaphragm several times before using it for contraception.
• It is one size only and is estimated to fit most people with a cervix.
• It is a reusable device and if properly stored it can last for two years.
• You can insert a diaphragm up to 24 hours before sex begins.
• You must leave it in for at least 6 hours afterwards, and remove it within 24 hours.
• You need to remove the diaphragm after sex for cleaning.
• You only have to use a diaphragm when you have sex – it doesn’t affect your body at other times.
• Diaphragms are quite effective in preventing unintended pregnancy if fitted properly and used every time you have sex.
• A person needs to be comfortable with touching their body to use a diaphragm.
• You have to keep your diaphragms clean and dry when not in use, and regularly check that it has not broken down.
• Do not use oil-based lubricants as these can cause the diaphragm to break down.
• You will need to replace your diaphragm if it is damaged or no longer fits well. If you have given birth you should check that your diaphragm still fits.
• Does not protect against STIs.
• It can be bought without a prescription.
• It has no effect on breastfeeding, menstrual cycle or fertility.

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This publication is provided for education and information purposes only. It is not a substitute for professional medical care. Information about a therapy, service, product or treatment does not imply endorsement and is not intended to replace advice from your healthcare professional. Readers should note that over time currency and completeness of the information may change. All users should seek advice from a qualified healthcare professional for a diagnosis and answers to their medical questions.