Propionibacterium acnes injection
Also known as: Immunoregulin, Eqstim, Arthrokehlan A, Coparvax, Corymunun, Imunoparvum
### What is this medication? Your pet is receiving an injection of a biologic response modifier (often called an **immunostimulant**). It contains killed bacteria that act as a "wake-up call" to your pet's immune system, helping their body fight off chronic bacterial or viral infections. ### What to Expect * **Flu-like symptoms:** Because the immune system is being activated, it is common for pets to experience mild, temporary side effects within hours of the injection. These may include **tiredness (lethargy), a mild fever, chills, or a temporary loss of appetite**. * **Treatment timeline:** This medication is usually given as a series of injections over several weeks or months, often alongside traditional antibiotics or antiviral medications. ### When to Contact Your Veterinarian > **Emergency Warning:** Rarely, pets can have a severe allergic reaction (anaphylaxis) to the injection. Seek immediate veterinary care if your pet develops facial swelling, hives, severe vomiting/diarrhea, difficulty breathing, or sudden collapse shortly after the injection.
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
- Adjunctive therapy of feline retrovirus infections
- Adjunctive therapy of feline retrovirus infections
- Antiviral immunostimulant to increase hematopoiesis in FeLV-positive cats
- Immunostimulant for adjunctive therapy of primary or secondary viral or bacterial respiratory tract infections
- Immunostimulant for adjunctive therapy of primary or secondary viral or bacterial respiratory tract infections
- Adjunctive treatment to improve fertility in mares with endometritis
- Adjunct to antibiotic therapy in the treatment of chronic recurring canine pyoderma
- Adjunctive therapy of chronic recurrent canine pyoderma
How it is given
Possible side effects
- Lethargy
- Hyperthermia (fever)
- Chills
- Anorexia
- Anaphylactic reactions
- Local tissue inflammation (if extravasated)
- Vomiting (long-term use)
- Malaise (long-term use)
- Acidosis (long-term use)
- Increased water consumption (long-term use)
- Hepatitis (long-term use)
Cautions & contraindications
- Hypersensitivity to the compound
- Canine lymphoma
- Leukemias with CNS involvement
- FIV or FIP in cats (according to some sources)
- Use with caution in patients with cardiac dysfunction. Safe use during pregnancy has not been established. Ensure strict intravenous administration, as extravasation may cause severe local tissue inflammation.
Drug interactions
- Glucocorticoids: May compromise immunostimulant effects; manufacturer recommends discontinuing steroids at least 7 days prior to initiating therapy.
- Immunosuppressive drugs: May compromise immunostimulant effects.
Frequently asked questions
What is Propionibacterium acnes injection used for in pets?
### What is this medication? Your pet is receiving an injection of a biologic response modifier (often called an **immunostimulant**). It contains killed bacteria that act as a "wake-up call" to your pet's immune system, helping their body fight off chronic bacterial or viral infections. ### What to Expect * **Flu-like symptoms:** Because the immune system is being activated, it is common for pets to experience mild, temporary side effects within hours of the injection. These may include **tiredness (lethargy), a mild fever, chills, or a temporary loss of appetite**. * **Treatment timeline:** This medication is usually given as a series of injections over several weeks or months, often alongside traditional antibiotics or antiviral medications. ### When to Contact Your Veterinarian > **Emergency Warning:** Rarely, pets can have a severe allergic reaction (anaphylaxis) to the injection. Seek immediate veterinary care if your pet develops facial swelling, hives, severe vomiting/diarrhea, difficulty breathing, or sudden collapse shortly after the injection.
Is Propionibacterium acnes injection 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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