An EpiPen is intended to be used immediately at the onset of a severe allergic reaction in patients with a history or risk of anaphylaxis. Symptoms can appear within minutes of the allergic interaction, which can be fatal without immediate treatment.
Anaphylactic symptoms may include:
- Trouble breathing or wheezing
- Hoarseness (changes in the way your voice sounds)
- Hives or severe itching
- Swelling of your face, lips, mouth, or tongue
- Skin rash, redness, or swelling
- Fast heartbeat
- Weak pulse
- Feeling very anxious and confusion
- Stomach pain or cramps
- Losing control of urine or bowel movements or diarrhea
- Dizziness or fainting
Your EpiPen may be prescribed for other indications not listed.
How is an EpiPen used?
An EpiPen is a single-use injection tool preloaded with one dose of medication. If you have been prescribed an EpiPen, carry it with you at all times as anaphylaxis can happen at any moment.
The EpiPen package may come with a trainer pen to be used for practicing. The trainer pen is identified by the gray coloring and has no medication or needle. You are encouraged to practice with the trainer pen to ensure you can understand and use the pen safely and correctly in the event of an anaphylactic emergency.
Follow the instruction pamphlet that comes with the EpiPen package. EpiPen should never be injected into a vein, the buttocks, hands, fingers, feet, or toes.
- Remove the blue safety release by pulling it straight up.
- For young patients, firmly hold the injection area to prevent cuts or broken needles.
- Swing and push the orange tip (needle) against the outer thigh firmly until you hear a “click.”
- Do not put your hand or fingers over the orange tip.
- Hold firmly for 3 seconds and remove.
- A second injection may be used if symptoms continue.
- Do not reuse the EpiPen that has already been injected.
- Seek emergency medical care.
Used or expired EpiPens must be disposed of in an FDA-cleared sharps container, not in the trash.
EpiPen comes in two different packages with two pens each:
- EpiPen Auto-Injector 0.3 mg – used for patients over 66 lbs (30 kg)
- EpiPen Jr Auto-Injector 0.15 mg – used for patients between 33-66 lbs (15-30 kg)
EpiPen should be stored away from light and extreme temperature at room temperature between 68°F and 77°F (20°C and 25°C).
Periodically check your EpiPen for any particles or discoloration as the solution should be clear. Refill as needed to replace unclear solutions or when expired.
Keep out of reach of children.
It’s important to understand that although EpiPen is FDA approved, it comes with side effects that may or may not affect you.
Before starting EpiPen, you should discuss possible side effects with your doctor or pharmacist.
Common Side Effects
Tell your doctor if you experience the following symptoms, and they become severe or do not go away on their own:
- Weakness or shakiness
- Sweating, nervousness, or anxious
- Paleness or dizziness
- Nausea or vomiting
- Breathing problems
- Fast or irregular heartbeat
Serious Side Effects
Severe adverse reactions while taking EpiPen can occur. Seek emergency medical care or call 911 if you experience any of the following symptoms:
- Infection at the injection site: warmth, pain, swelling, or redness around the injection site
- Cuts around the injection site or needle remain in the skin – more likely to occur in young children moving during the injection.
The information above does not list all possible side effects. Contact your doctor or pharmacist if you experience any side effects not listed. You or your doctor may report side effects to the FDA by calling 1-800-FDA-1088.
Warnings & Precautions
Before using EpiPen, tell your doctor or pharmacist if you:
- Have thyroid problems
- Have asthma
- Have or have had depression
- Have heart problems or high blood pressure
- Have diabetes
- Have Parkinson’s disease
- Are pregnant or planning to become pregnant
- Are breastfeeding or planning to breastfeed
If you have heart problems, the use of EpiPen may cause chest pain and produce rapid heartbeats. Your doctor will monitor your symptoms for follow-up.
The use of EpiPen may temporarily worsen symptoms of Parkinson’s Disease.
Your doctor may monitor your symptoms of current conditions such as thyroid disease and diabetes after using EpiPen.
Pregnant or planning to become pregnant
There is insufficient data to determine if epinephrine will affect pregnant patients or their unborn child.
Breastfeeding or planning to breastfeed
There is no data to determine if epinephrine will affect breast milk or pass it on to breastfed children.
Interactions & Contraindications
Before using EpiPen, tell your doctor or pharmacist if you take any medications, herbal supplements, or vitamins.
Cardigan Glycosides. Diuretics and Anti-arrhythmics
The use of cardiac glycosides, diuretics, or anti-arrhythmics medications while receiving an EpiPen dose may cause irregular heartbeats (cardiac arrhythmia).
Antidepressants, Levothyroxine, and Antihistamines
The use of tricyclic antidepressants, levothyroxine sodium, monoamine oxidase inhibitors, and certain antihistamines such as chlorpheniramine and diphenhydramine while receiving an EpiPen dose may increase the potency of epinephrine.
Ergot Alkaloids, Beta-Adrenergic and Alpha-Adrenergic Blockers
The use of ergot alkaloids beta-adrenergic and alpha-adrenergic blocker medications may interfere with the effectiveness of EpiPen. Your doctor will determine if these medications should be continued and what dose, as needed.
Frequently Asked Questions