Acetaminophen, commonly known as Tylenol, can be taken to decrease pain at the site of a pneumonia shot, according to RxList. Acetaminophen may also ease muscle aches, joint aches, fever and swelling associated with the shot. Patients should consult with their physicians before taking any pain reliever.
If side effects such as nausea, fainting, vision changes, numbness or seizure-like movements occur, a patient should contact his physician immediately, as RxList explains. More severe and serious side effects from a pneumonia shot include weakness, bruising or bleeding, or swollen glands. Allergic reactions to the shot may include rash, swelling of the face and trouble breathing. While these reactions are rare, they all require emergency medical treatment.