Pharm

Third Generation Broad-Spectrum Cephalosporins

Third Generation Broad-Spectrum Cephalosporins, Third Generation Cephalosporins, Ceftriaxone, Ceftizoxime, Cefotaxime, Cefpodoxime, Cefixime, Claforan, Rocephin, Vantin

See Also

Mechanism
Spectrum of Activity

Gram Positive Cocci
1. Less activity than First Generation Cephalosporins
EKP Gram Negative Bacteria
ESP Gram Negative Bacteria
1. Better activity than First Generation Cephalosporins
2. Better activity than Second Generation Cephalosporins
No Pseudomonas activity

Preparations
Oral agents

Cefixime (Suprax)
1. Adult
  1. Standard: 400 mg PO divided qd to bid
  2. Gonorrhea: 400 mg PO for single dose
2. Child: 8 mg/kg/day divided qd to bid
Cefpodoxime (Vantin)
1. Good activity Gram Positive organisms
  1. Covers Staphylococcus aureus
  2. Covers Pneumococcus
2. Adult: 100 to 400 mg PO bid
3. Child
  1. Pharyngitis: 10 mg/kg/day divided bid
  2. Otitis Media: 10 mg/kg/day divided qd

Preparations
Parenteral agents

Cefotaxime (Claforan)
1. Most Staphylococcus aureus and Anaerobic activity
2. Adult: 1 to 2 grams IM or IV every 6 to 8 hours
3. Child
  1. Standard: 50-150 mg/kg/day IM or IV divided q4-6h
  2. Meningitis: 200 mg/kg/day IV divided q6-8h
  3. Maximum dose: 2 grams
Ceftizoxime (Cefizox)
1. Moderate Staphylococcus aureus and Anaerobic Activity
2. Adult: 1 to 2 grams IV every 8 to 12 hours
3. Child: 50 mg/kg/dose IV every 6 to 8 hours
Ceftriaxone (Rocephin)
1. Least Staphylococcus and Anaerobic activity
2. Dilute in Lidocaine 1% for Intramuscular Injection
3. Adult
  1. Standard: 1-2 grams IM or IV every 24 hours
  2. Gonorrhea: 250 mg IM single dose
4. Child
  1. Standard: 50-75 mg/kg/day IV divide q12-24 hours
  2. Meningitis: 100 mg/kg/day IV divided q12-24 hours
  3. Otitis Media: 50 mg/kg IM single dose (max: 1g)
  4. Maximum Dose: 2 grams (4 grams for Meningitis)