What’s the difference between a cervical cap and a diaphragm?

Someone asked us: What’s the difference between a cervical cap and a diaphragm?

Both the cervical cap and diaphragm are reusable, cup-shaped barrier contraceptives that cover the cervix to prevent pregnancy, but they differ in size, shape, effectiveness, and duration of use. A diaphragm is a shallow, bendable silicone cup shaped like a dish that is 83-94% effective and can be worn for up to 24 hours, while a cervical cap is smaller, shaped like a sailor’s hat, and is about 86% effective for those who have never given birth (71% for those who have) and can be used for up to 48 hours. Both require professional fitting by a healthcare provider to ensure proper placement and effectiveness. The diaphragm must be used with spermicide, and costs range from $0 to $250-275 including the exam, fitting, and device itself. A nurse or doctor will perform a pelvic exam to determine the correct size for your anatomy, and you’ll receive a prescription to purchase the device at a pharmacy. In some cases, you may be able to obtain a prescription through a telehealth appointment. Neither method protects against sexually transmitted infections, so using condoms alongside barrier contraceptives provides additional protection. If you’re exploring contraceptive options or concerned about pregnancy prevention, speak with a healthcare provider who can help you select the most appropriate method for your needs and lifestyle.