
What is Epinephrine?
Epinephrine is a hormone naturally made by the adrenal glands, which sit on top of the kidneys. It is also known as adrenaline.
This hormone helps the body respond to stressful situations by increasing heart rate, improving breathing, and tightening blood vessels. In healthcare, epinephrine is available as an epinephrine injection or epinephrine auto-injector for emergency use.
People often buy epinephrine in Canada or Buy Epinephrine online to keep it on hand for severe allergic reactions.
The epinephrine price can vary depending on the brand, injector type, and epinephrine injection dose. Many people use an epinephrine coupon to help reduce the cost.
Indications and Benefits of Epinephrine
Epinephrine is approved for use in several emergency and clinical situations. It is mainly used to treat severe allergic reactions called anaphylaxis, which can occur after insect stings, certain foods, medications, or latex exposure.
It is also used to treat very low blood pressure caused by septic shock, a serious infection that affects the whole body. During eye surgeries, epinephrine may be used to help widen the pupils.
Doctors may also use epinephrine for off-label purposes, such as during cardiac arrest (when the heart stops), severe asthma attacks that do not respond to regular treatments, croup (a condition that causes breathing difficulty in children), or when used together with local anesthesia to reduce bleeding during surgery.
The dose of epinephrine depends on the person’s condition and age. The epinephrine dose for adults is usually higher than that for children.
What Are the Benefits of Epinephrine?
- Epinephrine quickly reverses severe allergic reactions by opening airways, easing breathing, and improving blood flow.
- It raises dangerously low blood pressure during septic shock, helping organs receive enough oxygen.
- It restarts the heart in people experiencing cardiac arrest when used as part of emergency resuscitation.
- It reduces swelling and itching from insect stings or food allergies.
- It helps stop severe asthma attacks when inhalers or other treatments do not work.
- It can prolong the effect of local anesthesia and reduce bleeding during minor surgeries.
- It provides life-saving support when used through an epinephrine injection or epinephrine auto-injector in emergencies.
- It is fast-acting, making it essential for people with a history of anaphylaxis or severe allergies.
- The epinephrine administration process is simple with an auto-injector, allowing even non-medical users to act quickly during an emergency.
- Though rare, epinephrine side effects such as nervousness, headache, or rapid heartbeat may occur. Anyone experiencing a side effect of epinephrine should seek medical advice.
- Using the correct epinephrine injection dose prevents epinephrine overdose, which can cause high blood pressure or irregular heartbeat.
Fact Table
| Fact Category | Fact Details |
| Generic Name | Epinephrine (also known as Adrenaline) |
| Epinephrine Class | Sympathomimetic; Alpha- and Beta-Adrenergic Agonist |
| Primary Use | Emergency treatment of severe allergic reactions called anaphylaxis caused by insect stings, certain foods, medications, or latex |
| Additional Benefit | Helps manage life-threatening low blood pressure during septic shock, severe asthma attacks, and cardiac arrest in emergency settings |
| Available Form | Auto-injector such as EpiPen, Auvi-Q, Adrenaclick, injection solution, and nasal spray |
| Method of Administration | Injected into the outer thigh muscle using an epinephrine auto-injector; in hospitals, it may be given into a vein or under the skin by healthcare professionals |
| Frequency | Used right away at the first sign of a serious allergic reaction; a second dose may be given after five to fifteen minutes if symptoms continue |
| Storage Instructions | Store at room temperature between twenty and twenty-five degrees Celsius. Keep away from light, heat, and moisture. Do not refrigerate or freeze. Keep in the original case and out of reach of children. |
| Pregnancy and Breastfeeding | Generally considered safe when medically necessary. The benefits usually outweigh the risks. Consult a healthcare provider before use. |
| Drug Interactions | May interact with beta-blockers, tricyclic antidepressants, monoamine oxidase inhibitors, and some heart or asthma medications. Always inform your doctor about all medications and supplements you take. |
| Manufacturer | Produced by several companies including Mylan, Teva, Pfizer, and Amphastar Pharmaceuticals |
How It Works
Epinephrine works by activating certain receptors in the body called alpha and beta receptors. These receptors are found in the heart, lungs, and blood vessels.
When epinephrine attaches to them, it causes several quick reactions that help the body handle emergencies.
It tightens blood vessels to raise blood pressure, makes the heart beat faster and stronger, and relaxes the muscles in the airways to make breathing easier.
This action helps during severe allergic reactions, asthma attacks, or very low blood pressure.
Epinephrine also helps reduce swelling and keeps blood flowing to vital organs like the heart and brain during life-threatening situations.
Brand Name Options
- Adrenaclick
- Adrenalin
- Auvi-Q
- EpiPen Auto-Injector
- EpiPen Jr Auto-Injector
- Symjepi
- Twinject (no longer available, but generic versions may be found)
Dosage
The dose of epinephrine depends on the person’s age, weight, and medical condition. It is most often used during emergencies such as severe allergic reactions, asthma attacks, or cardiac arrest.
The correct epinephrine injection dose is very important to make sure it works safely and effectively. Using the incorrect amount can lead to an epinephrine overdose, which may cause serious side effects.
Follow your doctor’s instructions when using an epinephrine auto-injector or when given epinephrine administration in a hospital.
What Dosage Strengths Does Epinephrine Come In?
- 0.1 milligram per milliliter injection (1 mg in 10 mL)
- 0.3 milligram auto-injector (standard adult strength)
- 0.15 milligram auto-injector (for children)
- 1 milligram per milliliter solution (for hospital use, often diluted before injection)
Epinephrine Dosage Chart
The amount or dose of epinephrine changes based on the situation. The chart below shows the recommended epinephrine dosage for different age groups and medical conditions. Always check with your doctor or pharmacist to confirm the right epinephrine injection dose before use.
| Condition | Population | Recommended Dose | Route | Frequency |
| Anaphylaxis (Severe Allergy) | Adults and children weighing 30 kilograms or more | 0.3 to 0.5 milligram | Inject into the outer thigh muscle | May repeat every 5 to 15 minutes if symptoms continue |
| Anaphylaxis (Severe Allergy) | Children weighing 15 to 30 kilograms | 0.15 milligram | Inject into the outer thigh muscle | May repeat every 5 to 15 minutes if needed |
| Anaphylaxis (Severe Allergy) | Children weighing under 15 kilograms | 0.01 milligram per kilogram (doctor to decide exact dose) | Inject into the outer thigh muscle | As directed by the doctor |
| Asthma or Breathing Emergency | Adults | 0.3 to 0.5 milligram | Under the skin or into the muscle | Every 20 minutes as needed, up to 3 doses |
| Asthma or Breathing Emergency | Children | 0.01 milligram per kilogram (maximum 0.3 mg per dose) | Under the skin or into the muscle | Every 20 minutes as needed |
| Cardiac Arrest | Adults | 1 milligram | Into a vein or bone (IV or IO) | Every 3 to 5 minutes during resuscitation |
| Cardiac Arrest | Children | 0.01 milligram per kilogram (maximum 1 mg per dose) | Into a vein or bone (IV or IO) | Every 3 to 5 minutes during resuscitation |
Usage Guide
Using epinephrine the right way during an emergency can save a life. It is important to know how to use your epinephrine auto-injector before an allergic reaction happens. Always follow your doctor’s instructions and practice with a trainer device if one is provided.
How do you take Epinephrine?
- Use epinephrine immediately at the first sign of a severe allergic reaction, such as swelling, difficulty breathing, or dizziness.
- Inject epinephrine into the middle of the outer thigh; it can be given through clothing if needed.
- Hold the injector in place for several seconds to make sure the full dose is delivered.
- Do not inject into veins, hands, feet, or buttocks, as this may cause serious side effects.
- After injecting, massage the injection area gently for about 10 seconds.
- Call emergency services right after using epinephrine, even if you start to feel better.
- Use a second dose after 5 to 15 minutes if symptoms continue or return.
- Always carry two epinephrine auto-injectors with you in case another dose is needed.
- Check the liquid in the injector regularly; it should be clear and colorless.
- Replace the device if it has expired, is discolored, or contains particles.
- Never reuse an auto-injector; each one is for single use only.
- If using epinephrine for a child, hold their leg steady during the injection to prevent injury.
- Practice using the trainer device so you know how to respond quickly in an emergency.
Epinephrine injection is a fast-acting treatment for severe allergic reactions and low blood pressure emergencies. It does not replace medical care, so emergency help should always be called after use.
Knowing how to use the epinephrine auto-injector properly can prevent delays and increase safety during an allergic reaction.
Side Effects
Epinephrine is an important emergency treatment for severe allergic reactions and very low blood pressure.
However, like any medication, it may cause certain side effects. Most side effects are mild and short-lived, but some can be serious and require immediate medical attention.
It is important to know what to expect and to talk to your doctor if you experience any unusual reactions.
When you buy epinephrine online or use an epinephrine auto-injector, always follow your doctor’s advice and report any concerns about possible side effects.
Common Side Effects
- Feeling nervous, anxious, or restless
- Fast or irregular heartbeat
- Headache or dizziness
- Nausea or vomiting
- Sweating or feeling warm
- Weakness or trembling in the hands
- Pale skin or flushing
- Redness, swelling, or tenderness at the injection site
Severe Side Effects
- Chest pain or tightness
- Severe or long-lasting increase in blood pressure
- Difficulty breathing or shortness of breath
- Confusion or agitation
- Vision changes or a severe headache
- Swelling of the face, tongue, or throat
- Irregular heartbeat or palpitations that do not go away
- Cold or pale fingers and toes due to poor blood flow
- Signs of infection or gangrene at the injection site
- Excessive weakness or fatigue after injection
Missed Dose
Epinephrine is used only during emergencies, such as a severe allergic reaction. It is not a medication that you take on a regular schedule.
If you forget to use it when symptoms appear, inject it right away as soon as you notice signs of a serious allergic reaction.
Call for emergency medical help after using epinephrine, even if you start to feel better.
Overdose
Using too much epinephrine can be dangerous. An epinephrine overdose may cause a very fast or irregular heartbeat, high blood pressure, severe headache, dizziness, or confusion.
In some cases, it can lead to a stroke, heart attack, or fluid in the lungs. If you think too much medication has been used, get emergency help right away.
Storage Information
Store Epinephrine in its original plastic carrying tube, tightly closed, and keep it out of reach of children.
Keep it at room temperature and away from light, heat, and moisture. Do not store it in the bathroom, refrigerator, or car.
Avoid exposing it to extreme temperatures. If the injector is dropped, check if it is cracked or leaking.
Do not use damaged injectors and make sure to replace them right away. When disposing, do not throw it in the toilet or trash.
Use a local take-back program or ask your pharmacist about safe disposal options.
Warnings
Epinephrine is a life-saving medication, but it must be used with care. It can affect the heart, blood pressure, and other organs, so always follow your doctor’s instructions closely.
Before using this medication, tell your doctor about your medical history, allergies, and other medications you are taking.
Using epinephrine correctly can prevent serious complications and reduce the risk of side effects.
- Tell your doctor if you are allergic to epinephrine or any of its ingredients before use, even though it is usually safe during emergencies.
- Do not inject epinephrine into fingers, toes, nose, or genitals because it may block blood flow and damage the tissue.
- Use caution if you have heart disease, high blood pressure, chest pain, or irregular heartbeat, as epinephrine may worsen these conditions.
- Inform your doctor if you have asthma, diabetes, thyroid problems, or Parkinson’s disease, as the dose of epinephrine may need careful adjustment.
- Tell your doctor about all other medications, vitamins, or herbal supplements you are taking, since some may interact with epinephrine and increase the chance of side effects.
- Avoid using certain over-the-counter allergy medications like diphenhydramine or chlorpheniramine without your doctor’s approval when using epinephrine.
- Always use epinephrine as instructed by your healthcare provider and seek emergency help right after using it, even if your symptoms improve.
- Use caution during pregnancy or breastfeeding. Your doctor will help you decide when and how to use epinephrine safely.
- Be careful during injection to avoid leaks under the skin, as this can cause pain or tissue damage around the injection site.
Boxed Warning and Precautions for Epinephrine
| Epinephrine should only be used under proper medical guidance and in emergencies such as severe allergic reactions or cardiac arrest. The medication can cause strong effects on the heart and blood vessels, including a fast heartbeat, high blood pressure, or chest pain. Improper use may lead to complications like tissue damage or irregular heart rhythms. Always use the prescribed epinephrine injection dose and follow your doctor’s instructions carefully. Patients with heart problems, glaucoma, or severe hypertension should use epinephrine with extra caution. Proper training and immediate medical follow-up after every use are important to ensure safety and prevent an epinephrine overdose or misuse. |
Contraindications
- Do not use epinephrine if you have a known allergy to its ingredients unless it is a life-threatening emergency and no other option is available.
- Use caution if you have heart disease or an irregular heartbeat because the epinephrine injection dose can increase heart rate and blood pressure.
- Avoid using epinephrine if you have severe high blood pressure, as it may worsen your condition.
- People with closed-angle glaucoma should use epinephrine carefully because it can raise eye pressure.
- Do not use epinephrine in areas such as fingers, toes, nose, or genitals to avoid reduced blood flow and tissue damage.
- Patients with Parkinson’s disease should use epinephrine with care, as it may increase tremors or muscle stiffness.
- People with diabetes should be cautious because epinephrine can raise blood sugar levels.
- Those with thyroid problems, especially an overactive thyroid, should use epinephrine carefully under medical supervision.
- Older adults may be more sensitive to the effects of epinephrine and have a higher risk of irregular heartbeat or high blood pressure.
- Pregnant and breastfeeding individuals can use epinephrine in emergencies, but they should inform a healthcare provider right after use.
Interactions
- Propranolol
- Amitriptyline
- Nortriptyline
- Doxazosin
- Rasagiline
- Digoxin
- Dihydroergotamine
- Albuterol
- Fluticasone
- Furosemide
- Hydrochlorothiazide
- Levothyroxine
Alternatives
- Generic epinephrine auto-injectors
- Auvi-Q
- Adrenaclick
- Symjepi
- Neffy
- Epinephrine injection vials
- Xolair
- Cetirizine
- Omlyclo
Price & Coupons
Use code PGSAVE10 at checkout and get 10% off your first epinephrine auto-injector order.
Savings on Bulk Purchases
You can save more by buying epinephrine auto-injectors in larger quantities. The pricing options below show how much you can save:
| Dosage | Quantity | Price (CAD) | Average US Price |
| 1mg/mL | 10 vials | $115.00 | $300.00 |
| 1mg/mL | 20 vials | $220.00 | $600.00 |
| 1mg/mL | 30 vials | $315.00 | $900.00 |
Pharma Giant’s Guarantee
At Pharma Giant, your health, safety, and savings always come first. We only work with licensed Canadian pharmacies to offer high-quality epinephrine at prices lower than those in the United States.
You can order a 3-month supply to save even more. Every prescription is doctor-approved and pharmacist-verified. We never ship any product without making sure it is safe, authentic, and right for you.
Pharma Giant gives you trusted service, real savings, and peace of mind all in one place.
Frequently Asked Questions
Disclaimer
Pharma Giant provides medical information to help you better understand medications and medical conditions.This content is for informational use only and does not replace advice from a licensed medical practitioner. Consult your doctor or pharmacist before starting or changing any medication. All our partners follow strict safety standards set by their country’s health authorities to make sure you receive safe and high-quality medications.





