FLUOXetine QUADmix™ Tablet
FLUOXetine is a compounded formulation containing FLUOXetine, prepared by Mixlab for veterinary use. Available by prescription.
QUADmix Tablets are special pills that can be split into 4 equal parts. They have a cross-shaped score line, so you can easily break them into halves or quarters for precise dosing.
These tablets work just like regular medication – they just give you more flexibility for giving the exact dose your pet needs.
Use as directed by your veterinarian.
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.
Veterinarians most commonly consider fluoxetine when a patient is presented with clinical signs of separation anxiety, compulsive disorders or inappropriate elimination in cats. It is frequently a point of discussion for managing localized tissue stress caused by psychogenic behaviors, such as acral lick granulomas or over-grooming. By modulating the chemical signaling within the central nervous system, your veterinarian can manage the patient’s emotional environment while concurrent behavior modification protocols are implemented.At a pharmacological level, fluoxetine acts by selectively inhibiting the reabsorption (reuptake) of serotonin by the presynaptic neuron. This mechanism increases the concentration of serotonin available in the synaptic cleft, enhancing serotonergic neurotransmission. Serotonin is a vital neurotransmitter studied for its role in regulating mood, sleep and impulse control. Unlike some older behavioral medications, fluoxetine has minimal activity at adrenergic, histaminergic or muscarinic receptors, which shapes its specific clinical profile. Your veterinarian will determine whether fluoxetine is appropriate for your pet based on species, weight and the specific behavioral diagnostic criteria.
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 of fluoxetine administration include a temporary decrease in appetite, lethargy and mild gastrointestinal changes such as vomiting or loose stools. Some animals may exhibit transient behavioral shifts, such as increased restlessness or irritability, during the initial phase of therapy. Because fluoxetine requires several weeks to reach steady-state levels in the system, veterinarians typically discuss an adjustment period before the full clinical context can be evaluated. If you observe significant tremors, persistent refusal of food or signs of physical distress, contact your veterinarian promptly.
This medication is typically used with extra caution or avoided in patients with a history of seizures or significant liver impairment, as the liver is the primary site for the metabolic processing of fluoxetine. It is also carefully evaluated in pregnant or lactating animals, as the safety profile for developing offspring is a point of professional consideration. Before starting a protocol, ensure your veterinarian has a complete history of all other prescriptions and supplements your pet is receiving, as fluoxetine is associated with a high risk of interactions with other serotonergic agents or MAO inhibitors. Your veterinarian is the right person to design a comprehensive monitoring plan and provide guidance on the necessary duration of use to ensure the management approach remains suitable for your pet's individual needs.
Yes. Fluoxetine is a prescription medication and can only be dispensed by a licensed pharmacy upon receipt of a valid authorization from a licensed veterinarian. Mixlab verifies all authorizations before any medication is prepared or shipped to your home.
Yes. While fluoxetine is available in various commercial tablet and capsule formats, Mixlab can compound this medication into specialized strengths or alternative flavored dosage forms—such as oral liquids, chews or treats—if your veterinarian determines a customized preparation better suits your pet's needs. The decision between a commercial and compounded product rests with the prescribing veterinarian.
Veterinarians discuss fluoxetine as a long-term management approach because it typically requires four to eight weeks of consistent administration before significant physiological changes are observed. It is not intended for the management of acute, situational stress events that require immediate onset.
Serotonin syndrome is a serious condition that can occur if fluoxetine is combined with other medications that also increase serotonin levels. Your veterinarian will monitor for signs such as tremors, high body temperature or extreme agitation to ensure your pet’s behavioral management plan remains safe.
