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Prevnar Side Effects

Generic Name: pneumococcal 7-valent vaccine

Note: This page contains side effects data for the generic drug pneumococcal 7-valent vaccine. It is possible that some of the dosage forms included below may not apply to the brand name Prevnar.

Applies to pneumococcal 7-valent vaccine: intramuscular suspension

As well as its needed effects, pneumococcal 7-valent vaccine (the active ingredient contained in Prevnar) may cause unwanted side effects that require medical attention.

Severity: Major

If any of the following side effects occur while taking pneumococcal 7-valent vaccine, check with your doctor immediately:

Symptoms of allergic reaction
  • Difficulty with breathing or swallowing
  • hives
  • itching, especially of the feet or hands
  • reddening of the skin, especially around the ears
  • swelling of the eyes, face, or inside of the nose
  • unusual tiredness or weakness (sudden and severe)

Severity: Moderate

If any of the following side effects occur while taking pneumococcal 7-valent vaccine, check with your doctor or nurse as soon as possible:

Less common:
  • Fever over 39 °C (102.2 °F)
  • Collapse or shock-like state
  • convulsions

Severity: Minor

Some pneumococcal 7-valent vaccine side effects may not need any medical attention. As your body gets used to the medicine these side effects may disappear. Your health care professional may be able to help you prevent or reduce these side effects, but do check with them if any of the following side effects continue, or if you are concerned about them:

More common:
  • Decreased appetite
  • diarrhea
  • drowsiness
  • fever of less than 39 °C (102.2 °F)
  • irritability
  • redness, soreness, hard lump, swelling, or pain at the injection site
  • restless sleep
  • vomiting
Less common:
  • Skin rash or hives

It is possible that some side effects of Prevnar may not have been reported. These can be reported to the FDA here. Always consult a healthcare professional for medical advice.

More about Prevnar (pneumococcal 7-valent vaccine)

Consumer resources

Professional resources

Other formulations

Related treatment guides

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