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what happens if you use an expired epipen

A 12-year-old male asked:
Dr. Nayla Mumneh
28 years experience Allergy and Immunology
Epipen (epinephrine): If expired, it may not work and if you are facing a dire situation, it is not the best scenario as it may jeapordize the patient's life.

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A 53-year-old member asked:
Dr. Sean McGhee
22 years experience Allergy and Immunology
Inadequate effect: The main problem is that epinephrine, the medicine in the epi-pen, degrades over time and becomes less active. That's a real problem when you are rely ... Read More
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A 39-year-old member asked:
Dr. Heidi Fowler
24 years experience Psychiatry
Epipen (epinephrine): The symptoms may return. That is why more treatment is needed for the allergic rxn after epipen (epinephrine).
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A 48-year-old member asked:
Dr. Charles Turck
16 years experience Pharmacology
Immediately: Use your Epipen at the first signs of a severe allergic reaction which can occur minutes to hours after exposure. Signs can include itching or swellin ... Read More
A 53-year-old member asked:
Dr. Ankush Bansal
16 years experience Internal Medicine
Acute allergy: Epipen (epinephrine) is for an acute allergic reaction. If you have a known allergy & come into contact with that allergen for any reason, you may ... Read More
A 40-year-old member asked:
Dr. Matt Wachsman
35 years experience Internal Medicine
Cannot say in your p: particular case because a lot of individual factors influence sentivity to stress hormones (hypertension/hypertension meds, heart, lung issues). Psyc ... Read More
A 33-year-old female asked:
Dr. Hans Crumpler
24 years experience Urgent Care
Possible hospital: or pharmacy can dispose of certain medications. Call them and ask. Some communities have expired medication drives to prevent people from dumping do ... Read More
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A 31-year-old male asked:
Dr. Thomas Josa
38 years experience Allergy and Immunology
Degrades with time: Yes, but potency is not guaranteed after the expiration date.
A 26-year-old male asked:
Dr. Al Hegab
Dr. Al Hegab answered
39 years experience Allergy and Immunology
Unlikely: epinephrine used in the Epipen has very short half life of about five minutes and the dose is very small, in anaphylaxis epinephrine is the first choi ... Read More
A female asked:
Dr. Stuart Hickerson
31 years experience Family Medicine
Yes: You can, however, I think there is concern about appropriate dosing and that is why the epipen exists in the first place. However, that has crossed my ... Read More

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