This device gives a dose of the drug epinephrine. It treats anaphylaxis. That's a serious allergic reaction that may cause your lips, tongue or throat to swell. You may have trouble breathing. You may pass out. Using an auto-injector at the start of anaphylaxis can save your life.
How does an auto-injector work? Well, there are different designs. But in general, they use a spring mechanism to help you give yourself an injection. You put the device on your thigh and press a button to activate it. The spring propels the needle into your thigh. It then gives you a dose of epinephrine from a syringe in the device.
Giving yourself an injection isn't hard, and you'll be trained to use your device. You'll practice until you can do it easily. You'll be taught how to store and carry your device, and when to use it. Follow all of the instructions for safe use.
Keep in mind that your auto-injector is only the first step in treating anaphylaxis. After you use it, you are still in danger. So get medical care as soon as possible. For more info, talk to your doctor.