Azactam (generic name: ceftazidime) is a third‑generation cephalosporin antibiotic used to treat a variety of bacterial infections. It works by inhibiting bacterial cell wall synthesis, leading to bacterial death. Below is a quick guide to its typical uses, dosing, precautions, and common side effects.
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1. What it’s for
| Indication | Typical infections | Common bacteria covered |
|------------|--------------------|------------------------|
| Severe Gram‑negative infections | Pneumonia, meningitis, urinary tract infections, intra‑abdominal infections, septicemia | Pseudomonas aeruginosa, Klebsiella, E. coli, Enterobacter, Proteus, Acinetobacter |
| Complicated intra‑abdominal and biliary tract infections | | |
| Complicated urinary tract infections | | |
| Skin and soft‑tissue infections | | |
| Infections with documented or suspected Pseudomonas | | |
Ceftazidime is not effective against MRSA or most Gram‑positive organisms; it’s specifically chosen when a Gram‑negative coverage is needed.
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2. How it’s given
- IV (most common); the drug is water‑soluble and usually diluted in a suitable IV fluid.
- Dosage is weight‑based in pediatrics and depends on infection severity in adults. A typical adult dose is 1 g IV every 8 hours, but can be increased to 2 g q8h for severe infections or when renal function is reduced.
- Route & frequency: Intravenous infusion over 30‑60 min; usually every 8–12 hours.
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3. Key precautions
| Category | Points |
|----------|--------|
| Allergies | Avoid if you have a history of severe allergic reaction to penicillins, cephalosporins, or ceftazidime. |
| Renal impairment | Dose adjustment needed. For creatinine clearance <30 mL/min, reduce dose to 1 g q12h (or use alternative therapy). |
| Pregnancy & lactation | Category B. Use only if clearly needed; consult your prescribing clinician. |
| Liver disease | Generally safe; no dose adjustment needed. |
| History of seizure | Ceftazidime can lower seizure threshold; monitor closely. |
| Recent antibiotic use | May alter normal flora; risk of C. difficile infection. |
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4. Common side effects
| Class | Symptoms |
|-------|----------|
| GI | Nausea, vomiting, diarrhea, abdominal pain |
| Allergic | Rash, pruritus, urticaria, anaphylaxis (rare) |
| Hematologic | Leukopenia, thrombocytopenia (rare) |
| Neuro | Seizures (particularly in renal failure) |
| Renal | Interstitial nephritis (rare) |
If you develop a severe rash, swelling, wheezing, or difficulty breathing, seek emergency medical help immediately.
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5. Drug interactions
| Drug | Interaction |
|------|-------------|
| Vancomycin | Synergistic activity; monitor renal function closely. |
| Dialysis | Ceftazidime is cleared by dialysis; adjust dosing. |
| Other beta‑lactams | Increased risk of allergic reactions. |
| Probenecid | Increases serum levels; monitor for toxicity. |
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6. How to take it
- Administration: Should be administered by a healthcare professional.
- Storage: Store in a cool, dry place; keep out of reach of children.
- Missed dose: If you miss an infusion, contact your clinician; you cannot self‑dose.
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7. What to tell your prescriber
1. Allergies: Any past reactions to penicillin, other cephalosporins, or ceftazidime.
2. Current medications: Include over‑the‑counter meds and supplements.
3. Kidney & liver function: Provide recent labs.
4. Pregnancy status: If applicable.
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8. Bottom line
- Azactam (ceftazidime) is a potent, third‑generation cephalosporin mainly used for serious Gram‑negative infections.
- Administered IV under medical supervision.
- Watch for allergic reactions and renal issues—especially in elderly or those with kidney disease.
- Ask your doctor if you have any concerns about side effects or interactions.
If you’re starting this medication, your clinician will give you a specific plan tailored to your infection and overall health. Feel free to ask any follow‑up questions!