The ring is thin and flexible, and it goes inside the vagina. It slowly releases progestin and estrogen hormones to prevent ovulation (the release of an egg from an ovary), and since no egg is released, the sperm has nothing to fertilize and pregnancy can’t happen.

While people have regular periods when using the ring, sometimes they are lighter with less cramping.

How effective is it against pregnancy?

• Typical use: Prevents pregnancy 93% of the time
• Perfect use: Prevents pregnancy 99% of the time
• Using the ring correctly and consistently increases its effectiveness. If you use the ring perfectly, it is about 99% effective at preventing pregnancy.

How to Use:

• Insert the small ring into the vagina: start on the first day of your period, or before day 5
• Squeeze the sides of the ring together and gently push it deep into your vagina
• To remove, hook your finger through the ring and gently pull it out of your vagina
• Put the ring in its case or foil wrapper
• The timing of when to remove the ring varies by brand – more information here

Pros:

• Easy to use (it’s like putting in a tampon)
• Can make periods shorter and reduce cramps
• You can become pregnant right after stopping the ring

Cons:

• Can increase vaginal discharge
• May cause spotting the first 1-2 months of use
• May cause vaginal irritation or infections
• Does not protect against HIV or other STIs – use a condom with this method