That is not because of the epinephrine, but because the allergic reaction probably requires further monitoring. You should always be checked out at the ER after using your EpiPen.

Constriction of your airways and a swollen tongue or throat, which can cause wheezing and trouble breathing.ĭo you have to go to the ER after using an EpiPen?.

Skin reactions, including hives and itching and flushed or pale skin.

If any of these effects last or get worse, tell your doctor or pharmacist promptly.

What are the side effects of using an EpiPen?įast/pounding heartbeat, nervousness, sweating, nausea, vomiting, trouble breathing, headache, dizziness, anxiety, shakiness, or pale skin may occur. And all of the autoinjectors tested that were up to 30 months beyond their labeled expiration date still had 90% of the dose remaining. One year after the labeled expiration date, devices still had 95% of the original epinephrine dose. How long can you use an EpiPen after it expires?

feeling restless, fearful, nervous, anxious, or excited.

fast, irregular, or pounding heartbeats.

The incidence of life-threatening rhythm disturbances is around 2.6%.

This is a naturally occurring substance in our bodies that can initiate a serious, fast heart rhythm that can rarely cause cardiac arrest. Epinephrine is the medication that is used in EpiPens.

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