Janssen COVID-19 Vaccine (PF) 0.5 Ml Intramuscular Suspension (EUA) (SARS-Cov-2) Vaccines Side Effects by Likelihood and Severity

COMMON side effects


If experienced, these tend to have a Less Severe expression

  • Headache
  • Injection Site Pain
  • Low Energy
  • Muscle Pain

INFREQUENT side effects


If experienced, these tend to have a Less Severe expression

  • Fever
  • Injection Site Erythema
  • Local Fluid Collection
  • Nausea

RARE side effects


If experienced, these tend to have a Severe expression

  • A Blood Clot
  • A Clot In The Lung
  • A Hypersensitivity Reaction To A Drug
  • A Significant Type Of Allergic Reaction Called Anaphylaxis
  • Bell's Palsy Paralysis Of One Side Of The Face
  • Blockage Or Narrowing Of The Portal Vein By A Blood Clot
  • Capillary Leak Syndrome, A Condition Where Fluid Leaks Out Of Small Blood Vessels
  • Formation Of Blood Clots In The Leg Veins
  • Guillain-Barre Syndrome
  • Inflammation Of The Covering Of The Heart Or Pericardium
  • Inflammation Of The Middle Tissue Heart Muscle
  • Inflammation Of The Spinal Cord
  • Low Platelet Count And Bleeding From Immune Response
  • Obstruction Of A Blood Vessel By A Blood Clot
  • Paralysis Of Nerves For The Face
  • Seizures
  • Thrombosis With Thrombocytopenia Syndrome

If experienced, these tend to have a Less Severe expression

  • A Feeling Of Pins And Needles On Skin
  • Anxious Feelings
  • Diarrhea
  • Fainting
  • Hives
  • Numbness
  • Ringing In The Ears
  • Vomiting

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CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.