Cephalosporins

Drug

Common Uses

Some Potential Side Effects

1st generation

Mainly skin and soft-tissue infections

Given before surgical procedures to prevent infections

Gastrointestinal upset and diarrhea*

Nausea

Allergic reactions (more likely in people allergic to penicillin)

2nd generation

Some respiratory infections

Abdominal infections

Gastrointestinal upset and diarrhea*

Nausea

Allergic reactions (more likely in people allergic to penicillin)

3rd generation

Cefditoren

Cefoperazone

Ceftibuten

Given by mouth: Broad coverage of many bacteria for people with mild-to-moderate infections, including skin and soft-tissue infections

Given by injection: Serious infections (such as meningitis or infections acquired in a hospital)

Gastrointestinal upset and diarrhea*

Nausea

Allergic reactions (more likely in people allergic to penicillin)

4th generation

Serious infections (including Pseudomonas infections), particularly in people with a weakened immune system, and infections due to susceptible bacteria that are resistant to other antibiotics

Gastrointestinal upset and diarrhea*

Nausea

Allergic reactions (more likely in people allergic to penicillin)

5th generation

Infections due to susceptible bacteria, such as methicillin-resistant Staphylococcus aureus (MRSA) and Enterococcus faecalis

Gastrointestinal upset and diarrhea*

Nausea

Allergic reactions (more likely in people allergic to penicillin)

Ceftobiprole†

Infections due to susceptible bacteria, such as methicillin-resistant Staphylococcus aureus (MRSA) and Enterococcus faecalis

Gastrointestinal upset and diarrhea*

Nausea

Allergic reactions (more likely in people allergic to penicillin)

Novel cephalosporins

Urinary tract infections due to susceptible bacteria, such as Escherichia coliKlebsiella pneumoniae, Proteus mirabilis, Pseudomonas aeruginosa, and Enterobacter, in people over 18 years of age who have limited or no alternative treatment options

Gastrointestinal upset and diarrhea*

Nausea

Allergic reactions (more likely in people allergic to penicillin)

Ceftolozane plus tazobactam

Complicated urinary tract or abdominal infections, or hospital-acquired pneumonia or ventilator-associated pneumonia due to sensitive organisms

Gastrointestinal upset and diarrhea*

Nausea

Allergic reactions (more likely in people allergic to penicillin)

Kidney and liver problems

* Almost any antibiotic can cause Clostridioides difficile–induced diarrhea

† Ceftobiprole is not available in the United States.