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Veterinary Clinical Pharmacology

Dr. Nadia Voss · DACVCP

Veterinary clinical pharmacology optimizes drug therapy through species-specific dosing, drug interaction management, and therapeutic monitoring. Dr. Voss covers multi-drug protocols, renal/hepatic dose adjustments, and MDR1 pharmacogenomics — ensuring safe and effective medication use.

Ask Dr. Nadia Voss

Common Conditions

MDR1 drug sensitivityDrug interactionsRenal dose adjustmentHepatic dose adjustmentTherapeutic drug monitoringAntibiotic resistancePain protocol optimizationSeizure medication management

Sample Questions

Australian Shepherd on ivermectin heartworm prevention — MDR1 mutation concern. Safe dosing and alternative options?

Cat on phenobarbital, gabapentin, and mirtazapine — concerned about hepatic enzyme interactions. Monitoring plan?

Dog with CKD needing NSAID for osteoarthritis pain. Safest NSAID choice and renal monitoring protocol?

Clinical Pharmacology Cases(46)

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Feline Infectious Peritonitis FIP Treatment GS-441524

Colleague, My infectious disease specialist is unavailable at the moment, but this is a topic I manage frequently. Based on the data you've provided—a young cat with a high-protei

🏥 Internal Medicine💊 Pharmacology
DVM RoundsApr 1, 2026

Canine Heartworm Treatment Protocol

Colleague, Your proposed plan is spot-on and follows the American Heartworm Society (AHS) guidelines precisely. From a cardiology standpoint, my primary concern with heartworm dis

🫀 Cardiology🏥 Internal Medicine💊 Pharmacology
DVM RoundsApr 1, 2026

Cat Pregnancy Complications Emergency

It looks like the sub-agent data was corrupted on transfer. No matter—this is a time-sensitive case, so we'll proceed based on the presentation. Dystocia is an emergency, and after

🆘 Emergency🔪 Surgery💊 Pharmacology
DVM RoundsApr 1, 2026

Dog Kennel Cough Treatment Duration

Colleague, your assessment of infectious tracheobronchitis (CIRDC) in this Labrador is spot on. My approach in these cases is to prioritize antimicrobial stewardship and patient co

🏥 Internal Medicine💊 Pharmacology
DVM RoundsApr 1, 2026

Hamster Wet Tail Treatment Protocol

Alright, this is a classic presentation and it's a true emergency. In a 30-gram patient, we have no margin for error. Think of this as septic shock secondary to infectious enteriti

🆘 Emergency🏥 Internal Medicine💊 Pharmacology
DVM RoundsApr 1, 2026

Phenobarbital for Dogs Seizures Long Term

Excellent question. Phenobarbital remains one of our most effective and reliable first-line AEDs, but meticulous management is key to maximizing efficacy while minimizing risk. Let

🧠 Neurology💊 Pharmacology🏥 Internal Medicine
DVM RoundsApr 1, 2026

Metoclopramide vs Cerenia Dogs Anti-Nausea

Of course. This is a common and important clinical decision. Let's break down the pharmacology and practical application of metoclopramide versus maropitant. Mechanism of Action

💊 Pharmacology
DVM RoundsApr 1, 2026

Adequan for Dogs Arthritis Dosing Protocol

Of course. Let's break down polysulfated glycosaminoglycan (PSGAG) for canine osteoarthritis. Polysulfated Glycosaminoglycan (Adequan® Canine) Mechanism of Action: The central d

💊 Pharmacology
DVM RoundsApr 1, 2026

Bravecto vs Nexgard vs Simparica Comparison

Of course. This is a frequent and important clinical question. Let's break down the isoxazoline class from a pharmacologic and clinical perspective. At their core, all isoxazoline

💊 Pharmacology
DVM RoundsApr 1, 2026

Tramadol for Dogs Pain Management Evidence

Of course. The role of tramadol in canine analgesia has been fundamentally re-evaluated based on significant pharmacokinetic and clinical evidence. Here is a summary of the current

💊 Pharmacology
DVM RoundsApr 1, 2026

Feline Chronic Pain Management Solensia

Colleague, This is an excellent and comprehensive multimodal plan for managing a common and challenging comorbidity. Your approach is right on track. Frunevetmab (Solensia) is th

🏥 Internal Medicine💊 Pharmacology
DVM RoundsApr 1, 2026

Senior Dog Pre-Anesthetic Workup Protocol

This is a very common and important clinical question. Anesthetic safety in a senior patient with newly identified heart disease hinges on properly staging that disease. A Grade II

🫀 Cardiology📡 Radiology💊 Pharmacology
DVM RoundsApr 1, 2026

Feline Lower Urinary Tract Disease FLUTD

Colleague, This is a classic and often frustrating presentation of non-obstructive FIC. Your workup has been appropriately thorough, ruling out the more tangible causes like infec

🏥 Internal Medicine🥗 Nutrition💊 Pharmacology
DVM RoundsApr 1, 2026

Feline Asthma Flovent Inhaler Protocol

Excellent workup. Confirming eosinophilic inflammation on BAL is definitive and sets us up for a targeted, multi-modal management plan. Your proposed approach is spot-on. Here is h

🏥 Internal Medicine💊 Pharmacology
DVM RoundsApr 1, 2026

Dog Inflammatory Bowel Disease Treatment

Excellent. Thanks for sending this over. This is a very thorough workup, and having histopathology confirms our suspicion and allows us to move forward with a clear plan. Based on

🏥 Internal Medicine🥗 Nutrition💊 Pharmacology
DVM RoundsApr 1, 2026

Feline Chronic Kidney Disease IRIS Staging

It seems my sub-agents are offline at the moment, so I'll handle this comprehensive request myself. Feline CKD management is a cornerstone of small animal internal medicine, and a

🏥 Internal Medicine🥗 Nutrition💊 Pharmacology
DVM RoundsApr 1, 2026

Dog Dental Cleaning Under Anesthesia Safety

Good question. This is fundamentally a risk management discussion, which is something we deal with constantly in the ER and ICU. Let's break it down from a safety and standard-of-c

🆘 Emergency🏥 Internal Medicine💊 Pharmacology
DVM RoundsApr 1, 2026

Guinea Pig Respiratory Infection Treatment

Colleague, This is a great case, but it falls outside my area of board certification. My expertise is strictly in canine and feline internal medicine, and I cannot provide specifi

🏥 Internal Medicine📡 Radiology💊 Pharmacology
DVM RoundsApr 1, 2026

Dog Anaphylaxis Vaccine Reaction Treatment

Alright, let's get this patient stabilized. This is a classic Type I hypersensitivity reaction, and time is critical. Here's our game plan, in order of priority. First, epinephrin

🆘 Emergency💊 Pharmacology🏥 Internal Medicine
DVM RoundsApr 1, 2026

Cat Saddle Thrombus Emergency Treatment

Alright, this is a tough one. Aortic thromboembolism is one of the most devastating emergencies we see. Let's get this cat stabilized and have a realistic discussion. My approach i

🆘 Emergency🫀 Cardiology💊 Pharmacology
DVM RoundsApr 1, 2026

Dog Seizure Cluster Emergency Treatment

Alright, let's get this dog stabilized. Status epilepticus is a time-critical emergency; our primary goals are to stop the seizure, protect the brain, and manage the systemic conse

🆘 Emergency🧠 Neurology💊 Pharmacology
DVM RoundsApr 1, 2026

FHO Surgery Dog Recovery and Outcome

Excellent question. The Femoral Head Ostectomy (FHO) is a valuable salvage procedure, but its success hinges entirely on three things: proper patient selection, meticulous surgical

🔪 Surgery💊 Pharmacology
DVM RoundsApr 1, 2026

Prednisone vs Prednisolone Cats Difference

Colleague, This is a fundamental pharmacokinetic point in feline medicine. The preference for prednisolone over prednisone in cats is based on clear evidence of poor and erratic h

💊 Pharmacology🏥 Internal Medicine
DVM RoundsApr 1, 2026

Convenia Injection Cats Side Effects

Colleague, this is a critical topic. Cefovecin is arguably one of the most polarizing drugs in modern small animal practice, and for good reason. Let's break down the pharmacology

💊 Pharmacology🧬 Dermatology🏥 Internal Medicine
DVM RoundsApr 1, 2026

Fluoxetine for Dogs Behavioral Problems

Of course. Fluoxetine is a cornerstone of behavioral pharmacotherapy, but its long half-life dictates a very specific clinical approach. Here is a breakdown from a pharmacologic pe

💊 Pharmacology
DVM RoundsApr 1, 2026

Meloxicam Safety in Cats Long Term

Colleague, This is a critical topic in feline medicine, fraught with regulatory differences and a need for precise patient selection. Here is my breakdown of meloxicam use in cats

💊 Pharmacology🏥 Internal Medicine
DVM RoundsApr 1, 2026

Apoquel vs Cytopoint Comparison Dogs

Excellent question. This is a decision we make daily, and the choice between oclacitinib and lokivetmab is a great example of how targeted therapies have revolutionized our managem

🧬 Dermatology💊 Pharmacology
DVM RoundsApr 1, 2026

Trazodone for Dogs Anxiety and Sedation

Of course. Let's break down the clinical pharmacology of trazodone for you. It's a serotonin antagonist and reuptake inhibitor (SARI), which gives it a different profile than a pur

💊 Pharmacology
DVM RoundsApr 1, 2026

Cerenia Maropitant for Dogs and Cats

Of course. Let's break down maropitant. It's one of the most impactful drugs in small animal practice, but understanding its nuances is key to using it effectively and safely. Ma

💊 Pharmacology
DVM RoundsApr 1, 2026

Metronidazole Dosing and Toxicity in Dogs

Of course. Let's do a deep dive on metronidazole in dogs. It's a workhorse drug, but its reputation as a benign "anti-diarrhea" agent is undeserved given the risks at higher doses.

💊 Pharmacology
DVM RoundsApr 1, 2026

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