Vancomycin
Also known as: Vancocin
Vancomycin is a highly specialized antibiotic reserved for very serious infections. * **Hospital Care (IV):** If your pet is receiving this medication by injection, it will be done in the hospital because it must be given slowly into a vein to prevent severe reactions. * **Home Care (Oral):** If you are sent home with oral vancomycin, it is specifically to treat a severe intestinal infection (like *C. difficile*). * **Administration:** Give the oral medication exactly as prescribed by your veterinarian. Do not skip doses or stop early, even if your pet seems better, to prevent the bacteria from becoming resistant. * **Food:** You may give the oral capsules/liquid with a small amount of food if it upsets your pet's stomach. * **Side Effects:** Watch for and report any signs of nausea, loss of appetite, vomiting, or changes in urination.
Dosage must be set by your veterinarian for your specific pet. Never give human medication or another pet’s prescription without veterinary guidance.
What it is used for
- Confirmed bacteremia/septicemia for enterococci or staphylococci resistant to other commonly used antibiotics
- Serious infections
- Confirmed bacteremia/septicemia for enterococci or staphylococci resistant to other commonly used antibiotics
- Serious infections
- C. difficile enterocolitis
- Skin, urinary, soft tissue infections
- Systemic infections, bacteremia
How it is given
Possible side effects
- Nephrotoxicity (especially with concurrent nephrotoxic drugs)
- Ototoxicity (hearing loss/vestibular signs)
- Thrombophlebitis (if given IV too rapidly)
- Severe hypotension or cardiac arrest (rare, associated with rapid IV bolus)
- Severe tissue damage and pain (if given IM, SC, or IP)
- Nausea and inappetence (with oral administration)
- Reversible neutropenia (with high/prolonged dosing)
- Hypersensitivity/dermatologic reactions (known in humans as 'Red Man Syndrome' due to histamine release)
Cautions & contraindications
- Infections susceptible to other, lower-tier antibiotics
- Intramuscular (IM), Subcutaneous (SC), or Intraperitoneal (IP) administration
- Rapid IV bolus administration
- Must be administered IV over at least 30-60 minutes as a dilute solution to prevent thrombophlebitis and severe hypotension. Dosages must be reduced or dosing intervals increased in patients with renal dysfunction. Therapeutic drug monitoring (trough levels) is highly recommended. Strictly reserve for multi-drug resistant infections to prevent the emergence of Vancomycin-Resistant Enterococci (VRE) or Staphylococci (VRSA).
Drug interactions
- Aminoglycosides (e.g., gentamicin, amikacin): Synergistic antibacterial effect, but significantly increases the risk of ototoxicity and nephrotoxicity. Enhanced monitoring is required.
- Anesthetic agents: May cause erythema and histamine-like flushing (reported in human pediatric patients).
- Nephrotoxic drugs (e.g., amphotericin B, cisplatin): Increased risk of severe nephrotoxicity; use together with extreme caution.
Frequently asked questions
What is Vancomycin used for in pets?
Vancomycin is a highly specialized antibiotic reserved for very serious infections. * **Hospital Care (IV):** If your pet is receiving this medication by injection, it will be done in the hospital because it must be given slowly into a vein to prevent severe reactions. * **Home Care (Oral):** If you are sent home with oral vancomycin, it is specifically to treat a severe intestinal infection (like *C. difficile*). * **Administration:** Give the oral medication exactly as prescribed by your veterinarian. Do not skip doses or stop early, even if your pet seems better, to prevent the bacteria from becoming resistant. * **Food:** You may give the oral capsules/liquid with a small amount of food if it upsets your pet's stomach. * **Side Effects:** Watch for and report any signs of nausea, loss of appetite, vomiting, or changes in urination.
Is Vancomycin safe for my pet?
Dosage must be set by your veterinarian for your specific pet. Never give human medication or another pet’s prescription without veterinary guidance.
This article is for general education and is not a substitute for professional veterinary advice. If your pet is unwell, please consult a veterinarian.
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