Chloramphenicol Injection

• Type: Broad-spectrum antibiotic

• Drug Class: Amphenicol antibiotic

• Form: Sterile solution or powder for reconstitution, given intravenously (IV) or sometimes intramuscularly (IM)

How It Works

• Chloramphenicol works by blocking bacterial protein synthesis at the ribosome level.

• This stops bacteria from growing and multiplying, allowing the immune system to eliminate the infection.

• It has broad-spectrum activity, effective against many gram-positive and gram-negative bacteria.

Common Uses

Chloramphenicol injection is usually reserved for serious infections when other antibiotics are not suitable, such as:

• Typhoid fever (especially severe or drug-resistant cases)

• Meningitis caused by Haemophilus influenzae, Neisseria meningitidis, or Streptococcus pneumoniae

• Rickettsial infections when tetracyclines are contraindicated

• Anaerobic infections (in selected cases)

• Severe brain abscess or intra-abdominal infections (when no better alternative is available)

Advantages

• Effective against a wide variety of bacteria, including some resistant strains

• Good penetration into cerebrospinal fluid (CSF), making it useful in meningitis

• Can be life-saving in resource-limited settings or when first-line drugs fail

Possible Side Effects

Chloramphenicol has some serious potential side effects, which is why its use is limited:

• Bone marrow suppression (dose-related, reversible)

• Aplastic anemia (rare, but potentially fatal and not dose-related)

• Nausea, vomiting, diarrhea

• Rash or allergic reaction

• Gray baby syndrome (in newborns due to immature liver enzymes)

• Headache, blurred vision, or confusion (rare)

Precautions

• Blood counts must be monitored regularly during treatment

• Avoid long-term or unnecessary use due to risk of aplastic anemia

• Not recommended in newborns unless absolutely necessary

• Dose adjustment may be required in liver dysfunction

• Should only be used under strict medical supervision