Side effects may include:

• diarrhea, nausea, vomiting
• stomach cramps, loss of appetite
• rash, itching
• pain, tenderness or a hardened mass at the injection site
• vaginal and anal itching

Cefazolin is a cephalosporin antibiotic which kills certain types of bacteria.  This information will discuss its use in pneumonia.

Do not use Cefazolin:

• you have had an allergic reaction to cefazolin or other cephalosporin antibiotics

Use cefazolin with caution if you:

• have had an allergic reaction to penicillins
• have a history of bowel disease, particularly colitis
• have gallbladder problems
• have kidney problems

Drug interactions. 

• probenecid

Safety in pregnancy: Cefazolin is considered compatible with pregnancy

Safety in breastfeeding: Cefazolin is considered compatible with breatfeeding.