Pyrimethamine Oral Suspension (Anhydrous)
Pyrimethamine is a veterinary antiprotozoal medication used to treat infections such as toxoplasmosis and coccidiosis in a variety of animals. By interfering with parasite folic acid metabolism, it helps control the spread of infection and supports recovery. Commonly prescribed for cats, dogs, horses, and small ruminants under veterinary guidance.
How to Give Anhydrous Oral Suspension
Oral Suspension (Anhydrous) is a liquid medication that does not contain water in its base. This might be an oil-based or other special base to help stabilize the medicine. It will look like a regular liquid medication, but often needs a good shake because the drug can settle. Here's how to give it:
- Shake well each time to mix the medication (5-10 seconds).
- Measure the dose using the syringe/dropper provided or one recommended by your vet. Insert the top of the oral syringe into the bottle adapter. Turn the bottle upside down and pull the plunger until the medicine reaches the volume required
- Hold your pet steady: a towel or helper can assist with squirmy pets.
- Administer the dose slowly into the side of the mouth. Allow small pauses if needed for swallowing.
- Raise the head slightly to help the medication go down and clean any spills with a little water or tissue.
- Praise your pet and offer a treat or water (unless advised against feeding right after).
- Clean the syringe with water immediately after use. Store the bottle as directed, out of sunlight.
- Consistency is key: Shake each time, measure accurately, and contact your vet if any issues arise.
The uses and pharmacology described below reflect the FDA-approved labeling for this active ingredient; your veterinarian determines whether and how they apply to your animal's treatment plan.
Pyrimethamine is an antiprotozoal agent utilized in veterinary medicine for managing intracellular parasites. It is a prescription medication available for use in multiple species, including horses and cats. It is frequently considered in the context of infectious diseases such as Toxoplasmosis or Equine Protozoal Myeloencephalitis (EPM).
Prescription only. Use only under the direction of a licensed veterinarian. This information is not a substitute for veterinary diagnosis, prescribing or monitoring. Compounded drugs are not approved by the FDA for safety or effectiveness.
At a pharmacological level, it manages protozoal populations by inhibiting the enzyme dihydrofolate reductase, supporting disrupting folate synthesis. Commonly observed effects include localized digestive changes and behavioral shifts like lethargy. Because it can influence blood cell counts, your veterinarian will monitor for observational signs of bone marrow suppression through regular blood work. Owners should monitor for pale gums and contact their veterinarian promptly.
Yes. Pyrimethamine is a prescription medication and requires a valid authorization from a licensed veterinarian. Mixlab verifies all legal requirements before dispensing.
Yes. Mixlab specializes in compounding pyrimethamine into customized strengths and flavored oral formats, such as flavored oral liquids or treats, to suit your pet's needs.
Veterinarians discuss pyrimethamine because it targets the protozoa responsible for neurological challenges in horses. This may be considered in the context of managing recovery from EPM.
Your veterinarian will recommend periodic blood work to monitor for observational signs of anemia or other blood cell changes. This monitoring ensures the management approach remains safe.
Yes, pyrimethamine is sometimes used for specific feline infections. Your veterinarian will determine the appropriate dose and provide guidance on the necessary duration of the course.
