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Details for: COVIFENZ - COVID-19


DIN DIN name Active Ingredient(s) Strength Dosage Form Route of Administration

Summary Reports

Regulatory Decision Summary
Product Monograph

Consumer Information

This information was provided by the drug’s manufacturer when this drug product was approved for sale in Canada. It is designed for consumers and care givers. It is a summary of information about the drug and will not tell you everything about the drug. Contact your doctor or pharmacist if you have any questions about the drug.

What the medication is used for

COVIFENZ is a vaccine used to prevent COVID-19 caused by the SARS-CoV-2 virus. COVIFENZ can be given to people from 18 to 64 years of age.

What it does

COVIFENZ works by helping your body to protect itself against COVID-19 by producing both antibodies and immune cells that recognize the virus, helping to prevent you from getting COVID-19 entirely or limiting how sick you become.

COVIFENZ is made of proteins in the form of Virus-Like Particles (VLP) from plants that produce these particles. The VLP in COVIFENZ looks like the SARS-CoV-2 virus to your immune system. COVIFENZ does not contain the virus that cause COVID-19 so you cannot catch COVID-19 from this vaccine.

As with any vaccine, COVIFENZ may not fully protect all those who receive it. Even after you have had both doses of the vaccine, continue to follow the recommendations of local public health officials to prevent spread of COVID-19.

When it should not be used

You should not receive COVIFENZ if:

  • you are allergic to any of the ingredients in this vaccine (see What the medicinal ingredient is or What the non-medicinal ingredients are)
  • you had an allergic reaction after a previous dose of this vaccine
  • you have any symptoms that could be due to COVID-19. Talk with your healthcare professional about your symptoms and getting a COVID-19 test. Your healthcare professional will advise you when you are able to receive the vaccine.
What the medicinal ingredient is

Medicinal ingredient: Virus-Like Particles (made in plants).

What the non-medicinal ingredients are

Non-medicinal ingredients:

  • Polysorbate 80
  • Potassium Phosphate Monobasic Anhydrous
  • Sodium Chloride
  • Sodium Phosphate Dibasic Anhydrous
  • Water for Injection.

May contain trace amounts of polyethylene glycol, kanamycin and carbenicillin.

The AS03 adjuvant used with COVIFENZ makes the immune response stronger and contains naturally occurring molecules (squalene and vitamin E) plus an emulsifier (polysorbate 80) and phosphate buffered saline. The vaccine does not contain any live viruses, egg proteins, preservatives, or human-derived materials.

What dosage form it comes in

The mixed vaccine is a whitish to yellowish homogeneous milky liquid emulsion in a multidose vial. Each dose is 0.5 mL and contains 0.25 mL (3.75 mcg) of virus-like particles (VLP) SARS-CoV-2 spike protein, adjuvanted with 0.25 mL of AS03.

Warnings and precautions

To help avoid side effects and ensure proper use, talk to your healthcare professional before you receive COVIFENZ. Talk about any health conditions or problems you may have, including if you:

  • have had any problems following previous administration of COVIFENZ such as an allergic reaction or breathing problems
  • have any other allergies
  • have a weakened immune system due to a medical condition or are on a medicine that affects your immune system
  • are feeling nervous about the vaccination process or have ever fainted in association with an injection
  • have a bleeding problem, bruise easily or use a blood thinning medication
  • are pregnant, think you may be pregnant, or plan to become pregnant
  • are breastfeeding.

Other warnings you should know about:

It may take at least 7 days after the second dose of COVIFENZ to develop an optimal protection against COVID-19. As with any vaccine, COVIFENZ may not fully protect all those who receive it.

Interactions with this medication

Tell your healthcare professional about all the medicines you take, including any drugs, vitamins, minerals, natural supplements, or alternative medicines.

There is no information on the use of COVIFENZ with other vaccines.

Tell your healthcare professional if you have recently received any other vaccine.

Proper use of this medication

How COVIFENZ is given:

Usual Dose:

COVIFENZ is given as an injection of 0.5 mL into a muscle of your upper arm.

You will receive 2 injections, given 21 days apart. It is very important that you return for the second injection, or the vaccine may not work as well. If you have received a first dose of COVIFENZ, you should receive COVIFENZ as a second dose to complete the vaccination series.

If you have any further questions on the use of COVIFENZ, ask your healthcare professional.


In the event of suspected overdose with COVIFENZ, contact your regional poison control centre.

Missed Dose

If you forget to go back to your healthcare professional at the scheduled time for your next dose, ask your healthcare professional for advice.

Side effects and what to do about them

Like all vaccines, COVIFENZ may cause side effects, although not everybody gets them.

The following are common or very common side effects. Most of these side effects are mild and do not last long. Tell your doctor if you have side effects that bother you:

Very common (may affect more than 1 in 10 people)

  • injection site pain, swelling, redness
  • headache
  • fatigue (feeling tired)
  • generally feeling unwell or uneasy
  • muscle or joint aches / pain
  • chills
  • joint aches/pain
  • swelling in the neck
  • swelling in the armpit

Common (may affect more than 1 in 100 people and up to 1 in 10 people)

  • fever

These are not all the possible side effects that you may have when taking COVIFENZ. If you experience any side effects not listed here, tell your healthcare professional.

Your vaccination provider may ask you to stay at the place where you received your vaccine for at least 15 minutes to 30 minutes for monitoring.

Should you develop any serious symptoms or symptoms that could be an allergic reaction, seek medical attention right away. Symptoms of an allergic reaction may include:

  • hives (bumps on the skin that are often very itchy)
  • swelling of the face, tongue, or throat
  • difficulty breathing
  • a fast heartbeat
  • dizziness and weakness

There is a remote chance that COVIFENZ could cause an allergic reaction. If you experience a severe allergic reaction, call 9-1-1 or go to the nearest hospital.

How to store

COVIFENZ should be stored, supplied, and administered by a healthcare professional.

Keep out of reach and sight of children.

Reporting side effects

Reporting Suspected Side Effects for Vaccines

For the general public: Should you experience a side effect following immunization, please report it to your healthcare professional.

Should you require information related to the management of the side effect, please contact your healthcare professional. The Public Health Agency of Canada, Health Canada and Medicago Inc. cannot provide medical advice.

For healthcare professionals: If a patient experiences a side effect following immunization, please complete the Adverse Events Following Immunization (AEFI) Form appropriate for your province/territory ( and send it to your local Health Unit.

More information

If you want more information about COVIFENZ:

This leaflet was prepared by Medicago Inc.

Last Revised: February 24, 2022

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