ampicillin (cont.)
SIDE EFFECTS: Common side effects of ampicillin include nausea,
vomiting,
loss of appetite, diarrhea, abdominal pain, rash, itching, headache, confusion
and dizziness. Patients with a history of allergic reactions to other
penicillins should not receive ampicillin. Persons who are allergic to the
cephalosporin class of antibiotics, which are related to the penicillins, for
example,
cefaclor (Ceclor), cephalexin (Keflex), and cefprozil (Cefzil), may or may not
be allergic to penicillins. Serious but rare reactions include
seizures, severe
allergic reactions (anaphylaxis), and low platelet or red blood cell count.
Ampicillin can alter the normal bacteria in the colon and encourage overgrowth
of some bacteria such as Clostridium difficile which causes inflammation of the
colon (pseudomembranous colitis). Patients who develop signs of pseudomembranous
colitis after starting ampicillin (diarrhea, fever, abdominal pain, and possibly
shock) should contact their physician immediately.
Reference: FDA Prescribing Information
Last Editorial Review: 1/9/2009
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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