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Jamie Winn NowPatientGreen tick
Updated on 26 Apr 2024

Learn more about COMIRNATY



COMIRNATY is the brand name for a mRNA COVID-19 Vaccine and is available as an intramuscular injection.

What dosages is COMIRNATY available in?

What dosages is COMIRNATY available in?

COMIRNATY is available as an intramuscular injection.

What is COMIRNATY used for?

What is COMIRNATY used for?

COMIRNATY is a mRNA vaccine and is sed for the following:
Prevention of COVID-19 infections in people ages 12 and older
Prevention of COVID-19 infections in children ages 6 months to 11 years – EUA only

How does COMIRNATY work?

How does COMIRNATY work?

COMIRNATY is a mRNA vaccine. This vaccine contains lab-made mRNA (genetic information) that teaches your body to make a part of the “spike protein” found on the virus that causes COVID-19. Your immune system recognizes that this harmless spike protein doesn’t belong in your body. This triggers your immune system to make antibodies against the protein. The antibodies tell other immune cells to get rid of it. Your immune system learns and remembers what the spike protein of the COVID-19 virus looks like. So when you get infected with the COVID-19 virus, your immune system is ready to fight and protect you from infection.

How do I take COMIRNATY?

How do I take COMIRNATY?

COMIRNATY is injected into the muscle by a healthcare provider. Each injection has 0.3 mL of medication.

  • Discuss with your healthcare provider about whether Comirnaty is appropriate for you and when to get your dose(s)
  • Primary series (for people who haven’t been previously vaccinated with any COVID-19 vaccine)
  • Adults and children 5 years and older: The typical dose is 1 injection into the muscle
  • Children 6 months to 4 years: In general, the typical dose is 1 injection into the muscle. This is followed by a second dose 3 weeks later. And finally, a third dose given 8 weeks after the second dose
  • Certain children with a weakened immune system: Speak with your healthcare provider about your child’s dosing schedule for Comirnaty. Sometimes, your child might need additional doses
  • Booster dose (for people who’ve been previously vaccinated with any COVID-19 vaccine): The typical dose is 1 injection into the muscle at least 2 months after your most recent COVID-19 vaccine dose

Note: The CDC recommendations about the timing of Comirnaty vaccine doses might be different. Ask your healthcare provider if you have any questions about how many Spikevax shots you need and when to get them.

Is it safe for me to take COMIRNATY?

Is it safe for me to take COMIRNATY?

COMIRNATY is a safe and effective treatment when used for FDA licensed indications. However, like all medications, they may give you unwanted side effects. You should always discuss potential side effects with your physician to ensure the medication is suitable and right for you.

COMIRNATY Common Side Effects

COMIRNATY Common Side Effects

Common side effects of COMIRNATY:

  • Pain at the injection site
  • Feeling tired
  • Headache
  • Chills
  • Muscle pain
  • Joint pain
  • Fever
COMIRNATY Serious Side Effects

COMIRNATY Serious Side Effects

Serious side effects are rare with COMIRNATY. Contact your healthcare provider immediately if you experience any of the following.

  • Heart inflammation (swelling): chest pain, shortness of breath, a racing heart
  • Serious allergic reactions: trouble breathing, throat tightness, fainting, hives, rash, swelling of your face, lips, tongue, or throat
Effects of other drugs, drug classes and over-the-counter products on COMIRNATY

Effects of other drugs, drug classes and over-the-counter products on COMIRNATY

There are no major drug interactions listed for COMIRNATY. However, always let your physician and pharmacist know about any other medications or supplements (including prescribed and over-the-counter medications, vitamins, and dietary or herbal supplements) that you are currently taking.

Who makes COMIRNATY?

Who makes COMIRNATY?


Is COMIRNATY safe in pregnancy?

Is COMIRNATY safe in pregnancy?

It is not known if COMIRNATY can harm your unborn baby. COMIRNATY should only be used during pregnancy if the benefit to you is worth the possible risk to your baby. There is a pregnancy exposure registry that monitors pregnancy outcomes in women exposed to COMIRNATY during pregnancy. Women who are vaccinated with COMIRNATY during pregnancy are encouraged to enroll in the registry by visiting Mother to baby


What to do if you missed your COMIRNATY dose

The FDA's medical product safety reporting program for health professionals, patients and consumers.

Learn more about reporting side effects
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Medical Disclaimer

NowPatient has taken all reasonable steps to ensure that all material is factually accurate, complete, and current. However, the knowledge and experience of a qualified healthcare professional should always be sought after instead of using the information on this page. Before taking any drug, you should always speak to your doctor or another qualified healthcare provider.

The information provided here about medications is subject to change and is not meant to include all uses, precautions, warnings, directions, drug interactions, allergic reactions, or negative effects. The absence of warnings or other information for a particular medication does not imply that the medication or medication combination is appropriate for all patients or for all possible purposes.

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