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COVID-19 VACCINE (koh-vid 19 vak SEEN) reduces the risk of COVID-19. It does not treat COVID-19. It is still possible to get COVID-19 after receiving this vaccine, but the symptoms may be less severe or not last as long. It works by helping your immune system learn how to fight off a future infection. The FDA has allowed the emergency use of this vaccine.
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Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission. We do not endorse non-Cleveland Clinic products or services. Policy
This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.
COMMON BRAND NAME(S): Janssen COVID-19 Vaccine
They need to know if you have any of these conditions:
This vaccine is injected into a muscle. It is given by your care team.
Booster doses may be needed after finishing the primary series. Talk to your care team about your vaccination schedule.
A copy of the Fact Sheet for Recipients and Caregivers will be given before each vaccination. Be sure to read this information carefully each time. This sheet may change often.
Talk to your care team about the use of this vaccine in children. Special care may be needed.
Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once.
NOTE: This medicine is only for you. Do not share this medicine with others.
This does not apply. This medication is not for regular use.
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This medication may interact with the following:
This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.
Visit your care team regularly.
This vaccine can cause a blood clotting problem called thrombosis with thrombocytopenia syndrome (TTS). TTS is a rare but serious medical condition that can be deadly. Get medical help right away if you have a severe headache, change in vision, stomach pain, nausea, vomiting, back pain, chest pain, trouble breathing, pain, swelling, or warmth in leg, or unusual bruising or bleeding.
This vaccine, like all vaccines, may not fully protect everyone. Continue to follow all guidelines to prevent exposure.
Side effects that you should report to your care team as soon as possible:
Side effects that usually do not require medical attention (report these to your care team if they continue or are bothersome):
This list may not describe all possible side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
This vaccine is only given by your care team. It will not be stored at home.
NOTE: This sheet is a summary. It may not cover all possible information. If you have questions about this medicine, talk to your doctor, pharmacist, or health care provider.
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Note: Introduction and Additional Common Questions written and medically approved by Cleveland Clinic professionals.