Call 911 now.
Put the phone on speaker so you can keep helping. The dispatcher can talk you through what to do.
Call 911Do this now
- Use epinephrine right away if they have an auto-injector or nasal spray. Press the auto-injector firmly into the outer thigh — it can go through clothing.
- Call 911, even if they start to feel better.
- Have them lie on their back with legs raised. Let them sit up if it’s hard to breathe. Turn them on their side if they are vomiting, or onto their left side if they are pregnant.
- Give a second dose if symptoms don’t improve or get worse after about 5 to 15 minutes and you have one.
- Start CPR if they stop breathing normally.
Call 911 if:
- Trouble breathing, wheezing, a tight throat, or a hoarse voice
- Swelling of the lips, tongue, face, or throat
- Dizziness, fainting, or a weak, fast pulse
- Hives or itching with vomiting, belly cramps, or any of the signs above
- They used epinephrine for any reason
If you’re not sure
If you’re unsure whether it’s anaphylaxis, give the epinephrine. It is much safer than waiting. An expired auto-injector is better than none.
Why go to the hospital?
Epinephrine wears off, and symptoms can come back hours later. The person should be checked at a hospital even if they feel fine after the shot.
Avoid
- Don’t rely on antihistamine pills like diphenhydramine. They work too slowly for a severe reaction.
- Don’t let the person stand up or walk around suddenly.
- Don’t give anything to drink if they are having trouble breathing or swallowing.
See the allergic reactions guide for how to use an auto-injector.