Antibiotics Home > Ceftazidime Dosage

Ceftazidime is given intravenously (through an IV) or injected into a muscle, typically once every 8 or 12 hours. Your particular dosage of ceftazidime will be based on how old you are, what type of infection you have, and many other factors. The standard amount for adults varies widely -- for example, an adult dose can range from 500 mg to 2000 mg.

An Introduction to Dosing With Ceftazidime

The dosage of ceftazidime (Fortaz®, Tazicef®) your healthcare provider recommends will vary, depending on factors such as:
  • Your age
  • Your weight
  • The type and seriousness of the infection being treated
  • How well your kidneys are functioning
  • Other medical conditions you may have.
As is always the case, do not adjust your dose unless your healthcare provider specifically tells you to do so.

Ceftazidime Dosage for Infections

The standard recommended dose for ceftazidime varies widely depending on several factors, but amounts for adults typically range from 500 mg to 2 grams (2000 mg) every 8 or 12 hours. In general, the more serious the infection, the higher and more frequent the dose. Although ceftazidime can be injected into a muscle (intramuscularly) or given intravenously (by IV), the IV route is usually best when treating serious infections.
For children, the dosage is calculated based on the child's weight. Ceftazidime is approved for use in young children, even newborns. The medication should be given by IV, not intramuscularly, for children age 12 years and younger. Typical doses in children range from 30 to 50 mg per kg (about 13 to 23 mg per pound) every 8 or 12 hours.
If your kidneys are not functioning well, your healthcare provider may recommend a lower or less frequent ceftazidime dose.
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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