Budesonide/FLUOXetine Oral Suspension (Anhydrous)
Budesonide/FLUOXetine is a compounded formulation containing Budesonide, FLUOXetine, 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.
This compounded formulation combines budesonide, a corticosteroid, with fluoxetine, a selective serotonin reuptake inhibitor (SSRI) — two different drug classes. In compounding practice, clinicians may consider a combination like this for a multi-targeted approach. Your veterinarian determines whether it is appropriate based on your animal's diagnostic findings.
At a pharmacological level, this medication functions through two distinct pathways. Budesonide acts by binding to glucocorticoid receptors, which help address the transcription of pro-inflammatory cytokines and enzymes; it is specifically valued for its high first-pass metabolism, which minimizes systemic steroid exposure. Fluoxetine acts by inhibiting the reuptake of serotonin at the presynaptic neuronal membrane. This leads to increased serotonin levels in the synaptic cleft, which manages the neurological environment associated with anxiety and obsessive-compulsive behaviors. Your veterinarian will determine the clinical appropriateness of this combination based on your pet's diagnostic history and behavioral profile.
This description reflects the general pharmacology of the active ingredient's drug class; your veterinarian determines whether this approach is appropriate for your animal.
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.
Commonly observed effects following the administration of budesonide/fluoxetine include mild gastrointestinal shifts, a temporary decrease in appetite or localized changes in energy levels. Because fluoxetine influences serotonin levels, some pets may exhibit behavioral shifts including lethargy or, conversely, increased agitation during the initial stages of use. While budesonide is selected in the context of addressing systemic influence, owners should watch for classic steroid-related behaviors such as increased thirst or urination and contact their veterinarian promptly if these occur.
This medication is typically used with extra caution or avoided in patients with a history of seizures, severe hepatic impairment or known hypersensitivity to either active ingredient. It is also carefully evaluated in pets receiving other prescriptions that influence serotonin levels to avoid the risk of serotonin syndrome. Before starting a protocol, ensure your veterinarian has a complete history of all other medications your pet is receiving, especially monoamine oxidase inhibitors (MAOIs) or certain antifungal agents. Your veterinarian is the right person to provide guidance on the necessary duration of use and the most commonly considered monitoring schedule to ensure the management approach remains suitable for your pet's individual health status.
Yes. Budesonide/fluoxetine is a combination of prescription medications and can only be dispensed by a licensed pharmacy upon receipt of a valid authorization from a licensed veterinarian. Mixlab verifies all veterinarian-client-patient relationships before any medication is prepared or shipped.
Yes. Because this specific two-drug combination is not available as a single commercial product, Mixlab specializes in compounding it into customized strengths and flavored dosage forms—such as oral liquids or capsules—to suit your pet's specific needs. The decision to use a compounded formulation rests with the prescribing veterinarian.
Veterinarians discuss this combination for pets where physical inflammation, often in the gut, is complicated by anxiety or stress. By managing the physical swelling with budesonide and the emotional stress with fluoxetine, the medication provides a comprehensive approach to the pet's overall well-being.
While the budesonide component may influence localized inflammation relatively quickly, the fluoxetine component typically requires several weeks of consistent use before behavioral shifts are observed. Your veterinarian will discuss the expected onset timing and monitoring plan specific to your pet's condition.
