VANCOMYCIN

Vancomycin

What it is

Vancomycin is a powerful antibiotic used to treat serious bacterial infections, particularly those caused by Gram-positive organisms such as methicillin-resistant Staphylococcus aureus (MRSA). It works by inhibiting bacterial cell wall synthesis, leading to the death of susceptible bacteria. Vancomycin can be given intravenously for systemic infections or orally to treat Clostridioides difficile (C. diff) colitis.

Uses

This medication is prescribed to manage severe infections like bloodstream infections, endocarditis, bone and joint infections, pneumonia, and skin infections when other antibiotics are ineffective. It is also a mainstay treatment for C. diff-associated diarrhea when taken orally, as it is not absorbed through the gut and works locally in the intestines.

Symptoms That May Lead to the Prescription

Doctors may prescribe vancomycin if you present with persistent fever, chills, abscesses, wound infections, pneumonia symptoms (such as cough, chest pain, or shortness of breath), or severe diarrhea linked to antibiotic use. It is typically reserved for confirmed or suspected resistant bacterial infections.

Abnormal Results or Considerations

Low Drug Levels: May lead to ineffective treatment and bacterial resistance. Inadequate dosing is a risk in patients with rapid drug clearance.

High Drug Levels: Can cause kidney damage (nephrotoxicity) or hearing loss (ototoxicity). Blood levels are often monitored (therapeutic drug monitoring) to maintain safe and effective dosing.

Risks and Side Effects

Possible risks include infusion-related reactions such as “red man syndrome” (flushing, rash, low blood pressure), kidney injury, hearing problems, and allergic reactions. Careful monitoring is needed, especially in patients with preexisting kidney disease or those receiving other nephrotoxic medications.