Generic Name: epinephrine (Injection route)
The Twinject brand name has been discontinued in the U.S. If generic versions of this product have been approved by the FDA, there may be generic equivalents available.
Commonly used brand name(s)
In the U.S.
- Adrenalin Chloride
- Epipen Jr
Available Dosage Forms:
Therapeutic Class: Anaphylaxis Agent
Pharmacologic Class: Adrenergic
Chemical Class: Alkylarylamine
Uses For Twinject
Epinephrine injection is used for emergency treatment of severe allergic reactions (including anaphylaxis) to insect bites or stings, medicines, foods, or other substances. It is also used to treat anaphylaxis caused by unknown substances or triggered by exercise.
This medicine is available only with your doctor's prescription.
Before Using Twinject
In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For this medicine, the following should be considered:
Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.
Appropriate studies performed to date have not demonstrated pediatric-specific problems that would limit the usefulness of epinephrine injection in children.
No information is available on the relationship of age to the effects of epinephrine injection in geriatric patients. However, elderly patients are more likely to have age-related heart disease which may require caution in patients receiving epinephrine injection.
|All Trimesters||C||Animal studies have shown an adverse effect and there are no adequate studies in pregnant women OR no animal studies have been conducted and there are no adequate studies in pregnant women.|
There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.
Interactions with Medicines
Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking this medicine, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.
Using this medicine with any of the following medicines is not recommended. Your doctor may decide not to treat you with this medication or change some of the other medicines you take.
Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
- Iobenguane I 123
Using this medicine with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
Interactions with Food/Tobacco/Alcohol
Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco.
Other Medical Problems
The presence of other medical problems may affect the use of this medicine. Make sure you tell your doctor if you have any other medical problems, especially:
- Angina pectoris (severe chest pain) or
- Asthma or
- Blood vessel problems or
- Depression, history of or
- Diabetes or
- Heart attack or
- Heart disease (eg, coronary artery disease, organic heart disease) or
- Heart rhythm problems (eg, arrhythmia) or
- Hypertension (high blood pressure) or
- Hyperthyroidism (overactive thyroid) or
- Parkinson's disease—Use with caution. May make these conditions worse.
Proper Use of epinephrine
This section provides information on the proper use of a number of products that contain epinephrine. It may not be specific to Twinject. Please read with care.
Use this medicine only as directed by your doctor. Do not use more of it, do not use it more often, and do not use it for a longer time than your doctor ordered.
If you are using this medicine at home, make sure you or any of your family members understand exactly how to give them. Also, tell your doctor if you or your caregiver has severe arthritis of the hands. If you have any questions about this, check with your doctor.
This medicine is injected into the muscle of your outer thigh only. Do not inject this medicine into a vein, into the muscle of your buttocks, or into your fingers, toes, hands, or feet. To do so, may increase the chance of having serious side effects.
This medicine comes with patient information and instructions leaflet. Read and follow these instructions carefully. Ask your doctor or pharmacist if you have any questions.
This medicine comes in 2 forms:an autoinjector syringe and needle kit or a prefilled syringe. This contains the correct dose of medicine your doctor has prescribed.
This medicine comes with an autoinjector trainer and a separate trainer instructions for use. Be sure to practice first with your autoinjector trainer before an allergy emergency happens to make sure you are ready to use the real Adrenaclick®, EpiPen®, or EpiPen Jr® autoinjector in an actual emergency. The autoinjector trainer has a grey color (for EpiPen® or EpiPen Jr®) or beige color (for Adrenaclick®) and does not contain any medicine or needle.
Do not remove the blue safety release (EpiPen® or EpiPen Jr®) or the gray end caps (Adrenaclick®) on the autoinjector until you are ready to use it. Do not put your thumb, fingers, or hand over the orange (EpiPen® or EpiPen Jr®) or red (Adrenaclick®) tip of the autoinjector or over the needle of the Symjepi® prefilled syringe. This is to avoid an accidental injection.
If you use the Symjepi® prefilled syringe:
- Do not remove the needle cap until you are ready to use it.
- Slowly inject the syringe into the thigh while sitting down.
- Push the plunger all the way down until you hear a "clicking" sound. Hold it for 2 seconds.
- Remove the syringe and massage the area for 10 seconds.
- Call your medical provider right away after injection.
You may need to use more than one injection if your allergic reaction does not get better after the first shot. If more than 2 injections are needed for 1 reaction, however, those should be given only under medical supervision.
If you are using the epinephrine injection in a child, make sure to hold his leg firmly in place and limit movement before and during an injection.
Carry this medicine with you at all times for emergency use in case you have a severe allergic reaction.
Check the injection kits regularly to make sure that the liquid has not changed its color. It should be clear and colorless. Do not use this medicine if the liquid has changed its color (pinkish or brown in color), has become cloudy, or if there are particles in it.
Do not reuse the remaining portion of the medicine that is left in the autoinjector or prefilled syringe. Throw away the autoinjector or prefilled syringe after you have used it.
The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.
The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.
- For injection dosage form:
- For allergic reactions:
- Adults and children weighing more than 30 kilograms (kg)—0.3 milligram (mg) injected under the skin or into the muscle of your thigh.
- Children weighing 15 to 30 kg—0.15 mg injected under the skin or into the muscle of your thigh.
- Children weighing less than 15 kg—Use and dose must be determined by your doctor.
- For allergic reactions:
Keep out of the reach of children.
Do not keep outdated medicine or medicine no longer needed.
Ask your healthcare professional how you should dispose of any medicine you do not use.
Store the injection kits at room temperature, away from heat, moisture, and direct light. Do not store the medicine in the refrigerator or freezer, or into your vehicle's glove box.
Keep the autoinjector or prefilled syringe in its carrier tube or case to protect from damage. However, this tube or case is not waterproof. If you accidentally drop it, check for damage or leakage.
Precautions While Using Twinject
Anaphylaxis is a life-threatening reaction and requires immediate medical attention. Check with your doctor right away, or go to an emergency room as soon as possible, even if you feel better after using this medicine.
Tell your doctor if you develop symptoms of an infection (such as redness that does not go away, swelling, warmth, or tenderness) at the injection site.
This medicine may affect blood sugar levels. If you notice a change in the results of your blood or urine sugar tests or if you have any questions, check with your doctor.
Do not inject this medicine into your buttocks. Epinephrine may not work as well and may cause gas gangrene. Check with your doctor or go to the hospital emergency room right away to get additional treatment.
Do not inject this medicine into your hands or feet. There is already less blood flow to the hands and feet, and epinephrine could make that worse and cause damage to these tissues. If you accidentally inject epinephrine into your hands or feet, check with your doctor or go to the hospital emergency room right away.
This medicine may worsen the condition of patients with heart disease or heart rhythm problems. Check with your doctor right away if you have chest pain or tightness, decreased urine output, dilated neck veins, extreme fatigue, irregular heartbeat, swelling of the face, fingers, feet, or lower legs, troubled breathing, or weight gain. You might also feel dizzy or faint, or you might have a fast, pounding, or uneven heartbeat.
Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements.
Twinject Side Effects
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur:Incidence not known
- Abnormal or decreased touch sensation
- arm, back, or jaw pain
- bleeding, blistering, burning, coldness, discoloration of the skin, feeling of pressure, hives, infection, inflammation, itching, lumps, numbness, pain, rash, redness, scarring, soreness, stinging, swelling, tenderness, tingling, ulceration, or warmth at the injection site
- blurred vision
- chest pain or discomfort
- chest tightness or heaviness
- cold, pale, or bluish color of the skin of the fingers or toes
- fast, slow, irregular, pounding, or racing heartbeat or pulse
- fear or nervousness
- nausea or vomiting
- numbness, tingling, or pain in the fingers
- paleness of the skin
- pounding in the ears
- shakiness in the legs, arms, hands, or feet
- trembling or shaking of the hands or feet
- troubled breathing
- unusual tiredness or weakness
Get emergency help immediately if any of the following symptoms of overdose occur:Symptoms of overdose
- coldness of the skin
- decreased awareness or responsiveness
- decreased urine output
- lightheadedness, dizziness, fainting
- muscle twitching
- rapid weight gain
- rapid, deep breathing
- severe sleepiness
- stomach cramps
- swelling of the face, ankles, or hands
- unusual drowsiness, dullness, tiredness, weakness, or feeling of sluggishness
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.
See also: Side effects (in more detail)
The information contained in the Truven Health Micromedex products as delivered by Drugs.com is intended as an educational aid only. It is not intended as medical advice for individual conditions or treatment. It is not a substitute for a medical exam, nor does it replace the need for services provided by medical professionals. Talk to your doctor, nurse or pharmacist before taking any prescription or over the counter drugs (including any herbal medicines or supplements) or following any treatment or regimen. Only your doctor, nurse, or pharmacist can provide you with advice on what is safe and effective for you.
The use of the Truven Health products is at your sole risk. These products are provided "AS IS" and "as available" for use, without warranties of any kind, either express or implied. Truven Health and Drugs.com make no representation or warranty as to the accuracy, reliability, timeliness, usefulness or completeness of any of the information contained in the products. Additionally, TRUVEN HEALTH MAKES NO REPRESENTATION OR WARRANTIES AS TO THE OPINIONS OR OTHER SERVICE OR DATA YOU MAY ACCESS, DOWNLOAD OR USE AS A RESULT OF USE OF THE THOMSON REUTERS HEALTHCARE PRODUCTS. ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE OR USE ARE HEREBY EXCLUDED. Truven Health does not assume any responsibility or risk for your use of the Truven Health products.
Copyright 2017 Truven Health Analytics, Inc. All Rights Reserved.
More about Twinject (epinephrine)
- Side Effects
- During Pregnancy or Breastfeeding
- Dosage Information
- Drug Interactions
- Support Group
- 0 Reviews – Add your own review/rating
- Drug class: adrenergic bronchodilators