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Let's begin with the basics.

Anaphylaxis (pronounced “an-a-fi-lax-is”) is a potentially severe or life-threatening allergic reaction that can occur very quickly—as fast as within a couple of minutes of exposure to the allergen.

It can be triggered by an allergy to a particular food (peanuts or shellfish, for example) , biting or stinging insects (like bees) , medication (penicillin is a common one) , latex (the type of rubber many balloons are made from) or a variety of other allergic triggers. Read more about this topic here: What Causes Anaphylaxis?

The symptoms of anaphylaxis can vary.

Not everyone affected by anaphylaxis will experience the same thing, but common symptoms include hives , itching , flushing and swelling of the lips, tongue and roof of the mouth.

The airway is often affected, resulting in tightness of the throat, chest tightness and difficulty breathing. These life-threatening allergic reactions can also be accompanied by chest pain, low blood pressure, dizziness and headaches.

It's serious stuff, which is why your top priority should be avoiding your known allergen(s) as best you can.

Ever hear of “anaphylactic shock?”

You may have heard of the term “anaphylactic shock,” which occurs when there is inadequate blood flow to critical organs of the body during a life-threatening allergic reaction. Though many people use this term interchangeably with “anaphylaxis,” that is incorrect. Shock can be just one of the many signs of a life-threatening allergic reaction. A person may not even experience shock during anaphylaxis. In fact, according to a 10-year study, more than half of all patients showed no signs of shock during anaphylaxis.

Be careful to avoid allergens...and be prepared.

That’s why it’s important to talk with your doctor about how to identify the signs and symptoms of anaphylaxis. Ask your doctor if EpiPen® (epinephrine injection, USP) or EpiPen Jr® (epinephrine injection, USP) Auto-Injectors or their authorized generics are something you or your child should be prescribed, as part of an Anaphylaxis Action Plan.

Acting fast is important.

If you, your child or someone you're caring for shows signs or symptoms of a life-threatening allergic reaction, administer EpiPen® or EpiPen Jr® Auto-Injector, or the authorized generics, immediately as prescribed and seek emergency medical care. Because they do not treat the life-threatening symptoms of anaphylaxis, antihistamines are not recommended as first-line treatment for anaphylaxis.

It's important to administer epinephrine at the first signs of anaphylaxis. According to National Food Allergy Guidelines, epinephrine is the first-line treatment for life-threatening allergic reactions. A delay in administering epinephrine can be life-threatening.

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Antihistamines are not recommended for the life-threatening symptoms of anaphylaxis.

Learn why »

More IMPORTANT SAFETY INFORMATION (the following information applies to both Epipen and its Authorized Generic)

Use EpiPen® (epinephrine injection, USP) 0.3 mg or EpiPen Jr® (epinephrine injection, USP) 0.15 mg Auto-Injectors right away when you have an allergic emergency (anaphylaxis). Get emergency medical help right away. You may need further medical attention. Only a healthcare professional should give additional doses of epinephrine if you need more than two injections for a single anaphylactic episode. EpiPen® or EpiPen Jr® should only be injected into the middle of your outer thigh (upper leg), through clothing if necessary. Do not inject into your veins, buttocks, fingers, toes, hands or feet. Hold the leg of young children firmly in place before and during injection to prevent injuries. In case of accidental injection, please seek immediate medical treatment.

Rarely, patients who have used EpiPen® or EpiPen Jr® may develop an infection at the injection site within a few days. Some of these infections can be serious. Call your healthcare professional right away if you have any of the following at an injection site: redness that does not go away, swelling, tenderness, or the area feels warm to the touch.

Tell your healthcare professional about all of your medical conditions, especially if you have asthma, a history of depression, thyroid problems, Parkinson’s disease, diabetes, high blood pressure or heart problems, have any other medical conditions, are pregnant or plan to become pregnant, or are breastfeeding or plan to breastfeed. Be sure to also tell your healthcare professional all the medicines you take, especially medicines for asthma. If you have certain medical conditions, or take certain medicines, your condition may get worse or you may have longer lasting side effects when you use EpiPen® or EpiPen Jr®.

Common side effects include fast, irregular or “pounding” heartbeat, sweating, nausea or vomiting, breathing problems, paleness, dizziness, weakness, shakiness, headache, feelings of over excitement, nervousness or anxiety. These side effects usually go away quickly if you lie down and rest. Tell your healthcare professional if you have any side effect that bothers you or that does not go away.

Indications (the following information applies to both Epipen and its Authorized Generic)

EpiPen® and EpiPen Jr®  Auto-Injectors are for the emergency treatment of life-threatening allergic reactions (anaphylaxis) caused by allergens, exercise, or unknown triggers; and for people who are at increased risk for these reactions. EpiPen® and EpiPen Jr® are intended for immediate administration as emergency supportive therapy only. Seek immediate emergency medical help right away.

Please see the full Prescribing Information and Patient Information for EpiPen.

Please see the full Prescribing Information and Patient Information for the Authorized Generic for EpiPen.

For additional information please contact us at 800-796-9526.

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit or call 1-800-FDA-1088.

EpiPen® & EpiPen Jr® (epinephrine injection, USP) Auto-Injectors 0.3/0.15mg

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Prescribing Information