Skip to content
    Drugs & Medications

    Twinject Autoinjector intramuscular

    GENERIC NAME(S): EPINEPHRINE

    Uses

    This medication is used in emergencies to treat very serious allergic reactions to insect stings/bites, foods, drugs, or other substances. Epinephrine acts quickly to improve breathing, stimulate the heart, raise a dropping blood pressure, reverse hives, and reduce swelling of the face, lips, and throat.

    How to use Twinject Autoinjector intramuscular

    Keep this product near you at all times. (See also Storage section).

    Different brands of this medication have different directions for preparing and using the injector. Learn how to properly inject this medication in advance so you will be prepared when you actually need to use it. Also teach a family member or caregiver what to do if you cannot inject the medication yourself. Read the Patient Information Leaflet provided by your pharmacist before you have to use epinephrine and each time you get a refill. If you have any questions, consult your doctor or pharmacist.

    The effects of this medication are rapid but not long-lasting. After injecting epinephrine, seek immediate medical attention. Tell the healthcare professional that you have given yourself an injection of epinephrine. Avoid accidentally injecting this medication into your hands or areas of your body other than the thigh. If this occurs, tell the healthcare professional right away. Discard the injector properly.

    The solution in this product should be clear. Check this product visually for particles or discoloration from time to time. If it has turned cloudy or pink/brown in color, do not use the product. Obtain a new supply.

    Side Effects

    A fast/pounding heartbeat, nervousness, sweating, nausea, vomiting, trouble breathing, headache, dizziness, anxiety, shakiness, or pale skin may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly.

    Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

    Tell your doctor right away if any of these unlikely but serious side effects occur: irregular heartbeat.

    Seek immediate medical attention if any of these rare but very serious side effects occur: chest pain, fainting, vision changes, seizures, confusion.

    This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

    In the US -

    Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.

    In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

    Precautions

    Before using this medication, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

    This product may contain sulfites. However, if you have a sulfite allergy, this should not be a reason for avoiding use of this medication during an emergency. Since epinephrine can be life-saving, using it is more important than avoiding any sulfite-related problems you may experience.

    Before using this medication, tell your doctor or pharmacist your medical history, especially of: heart conditions (e.g., coronary artery disease, arrhythmias), high blood pressure, thyroid disease, diabetes.

    This drug may make you dizzy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely. Limit alcoholic beverages.

    The elderly may be more sensitive to the effects of this drug, especially a rapid rise in blood pressure, with increased risk if they also have heart disease.

    This medication should be used only if clearly needed during pregnancy or breast-feeding. Discuss the risks and benefits with your doctor.

    Interactions

    Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (such as prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.

    Some products that may interact with this drug are: anti-arrhythmic drugs (e.g., amiodarone, quinidine), beta-blockers (e.g., propranolol), digoxin, entacapone, ergot alkaloids (e.g., ergotamine), MAO inhibitors (isocarboxazid, linezolid, methylene blue, moclobemide, phenelzine, procarbazine, rasagiline, selegiline, tranylcypromine), phenothiazines (e.g., chlorpromazine), thyroid hormones (e.g., levothyroxine), tricyclic antidepressants (e.g., amitriptyline, doxepin).

    Overdose

    If overdose is suspected, contact a poison control center or emergency room right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center. Symptoms of overdose may include irregular heartbeat, fainting, vision changes, confusion, seizures.

    Notes

    Do not share this medication with others.

    Missed Dose

    Not applicable.

    Storage

    Store this product in the carrying case/original packaging at room temperature between 68-77 degrees F (20-25 degrees C) away from light and moisture. Brief storage between 59-86 degrees F (15-30 degrees C) is permitted. Avoid extreme heat and cold. Do not store this medication in your vehicle or in the bathroom. Do not refrigerate or freeze.

    From time to time, check the expiration date, and also check this product visually for particles or discoloration. Replace the unit before it expires or if particles/discoloration are present. Keep all medicines away from children and pets.

    Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this medication when it is expired or no longer needed. Consult your pharmacist or local waste disposal company for more details about how to safely discard your medication.

    Information last revised February 2016. Copyright(c) 2016 First Databank, Inc.

    Images

    Sorry. No images are available for this medication.

    Add to Cabinet

    Add Adderall to my medicine cabinet.

    Did you know?

    With WebMD's Medicine Cabinet, you can check interactions with drugs.

    Go to medicine cabinet

    Selected from data included with permission and copyrighted by First Databank, Inc. This copyrighted material has been downloaded from a licensed data provider and is not for distribution, expect as may be authorized by the applicable terms of use.

    CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.

    More about Drugs and Medications

    Newsletters

    Subscribe to free WebMD newsletters.

    • WebMD Daily

      WebMD Daily

      Subscribe to the WebMD Daily, and you'll get today's top health news and trending topics, and the latest and best information from WebMD.

    • Men's Health

      Men's Health

      Subscribe to the Men's Health newsletter for the latest on disease prevention, fitness, sex, nutrition, and more from WebMD.

    • Women's Health

      Women's Health

      Subscribe to the Women's Health newsletter for the latest on disease prevention, fitness, sex, diet, anti-aging, and more from WebMD.

    By clicking Submit, I agree to the WebMD Terms & Conditions & Privacy Policy and understand that I may opt out of WebMD subscriptions at any time.

    URAC: Accredited Health Web Site TRUSTe online privacy certification HONcode Seal AdChoices