MethimAZOLE Oral Suspension (Anhydrous)
MethimAZOLE is a compounded formulation containing MethimAZOLE, prepared by Mixlab for veterinary use. Available by prescription.
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.
Methimazole is an antithyroid agent utilized extensively in veterinary medicine for the management of thyroid hormone synthesis. It is a prescription medication available for use in feline patients, requiring professional guidance and monitoring by a licensed veterinarian. It is frequently considered in the context of feline hyperthyroidism for cats presented with elevated T4 levels.
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 is considered to influence the production of thyroid hormones by inhibiting the thyroid peroxidase enzyme. Commonly observed effects include localized digestive changes such as vomiting or a temporary decrease in appetite and behavioral shifts like lethargy. Because it can influence liver function and blood cell counts, your veterinarian will monitor for observational signs of sensitivity, such as intense scratching around the face. Owners should monitor for pale gums or yellowing of the skin (jaundice) and contact their veterinarian promptly.
Yes. Methimazole is a prescription medication and requires a valid authorization from a licensed veterinarian. Mixlab verifies all legal requirements before any medication is prepared or shipped.
Yes. Mixlab specializes in compounding methimazole into customized formats, such as transdermal gels for the inner ear or flavored oral liquids, to suit the specific needs of your cat.
Veterinarians recommend periodic blood work to monitor thyroid hormone concentrations. This provides a method for ensuring the dose remains appropriate for managing your cat's specific metabolic needs.
Intense scratching of the face or neck is an observational sign of methimazole sensitivity in some cats. If you notice this behavioral shift, contact your veterinarian immediately for a clinical review of the management plan.
Veterinarians discuss methimazole in the context of hyperthyroidism, where elevated thyroid hormone levels are associated with an increased metabolic rate. Addressing hormone levels provides a method for supporting a more stable metabolism and healthy weight.
