How it works
The shot contains a progestin called medroxyprogesterone acetate, or DMPA. It mainly works by stopping ovulation. One injection covers about three months, so you come in roughly four times a year.
Coming back on schedule matters. If you are late for a shot, call us rather than assuming you are still covered.
What to expect
- Changes to your period are common: irregular bleeding or spotting at first, and for many people periods become much lighter or stop.
- Some people notice other side effects. Tell your clinician what you are experiencing and what else you take.
- It is private. There is nothing at home for anyone to find.
- Your next appointment is set before you leave.
Stopping the shot
You stop simply by not coming in for the next one. Be aware that it can take a while after your last shot before your cycle and fertility return to normal, sometimes considerably longer than with other methods. If you are planning a pregnancy in the near future, mention that when you choose a method.
Frequently asked questions
How often do I need the shot?
About every three months. We schedule your next visit when you come in, so it does not slip.
What if I am late for my shot?
Call us. Depending on how late you are, you may need a backup method or a pregnancy test before the next injection. Do not assume you are still protected.
Will my periods stop?
Irregular bleeding is common at first, and over time many people find their periods get much lighter or stop. That is expected with this method and not harmful.
How soon can I get pregnant after stopping?
It varies, and it can take longer than with other methods, sometimes many months after the last shot. If you want to be pregnant soon, talk to us about a different option.
