Medications Toxicity Guide for Dogs and Cats

Extremely toxic. Severe GI signs, neurotoxicity, bone marrow suppression. Fatal from licking treated skin.

EXTREMELY toxic to dogs even in trace amounts. Chewing tube can be rapidly fatal.

Extremely toxic to cats (one tablet can be fatal). Causes liver damage and red blood cell damage.

Stimulants. Extremely dangerous. Even small amounts fatal.

Stimulants cause severe cardiovascular and neurological signs. Even small doses fatal.

Punctured inhaler releases massive dose causing severe cardiac effects and potassium disturbances.

Cause serotonin syndrome in pets. Severe neurological, cardiovascular, thermoregulatory effects.

Can cause serotonin syndrome. Even one pill is serious.

Antihistamines can cause serious side effects in pets. Cats are especially sensitive.

Stomach ulcers and kidney damage. Cats especially sensitive.

Cause severe CNS depression. Paradoxically can cause agitation.

Cause severe drop in heart rate and blood pressure. Single tablet can be life-threatening.

Can cause dangerous drops in blood pressure and heart rate.

Can cause severe hypotension, kidney failure, electrolyte imbalances.

Blood thinners prevent clotting. Even small overdoses cause severe bleeding.

Highly concentrated caffeine. A single pill can be lethal to small dogs. Causes severe cardiac and CNS stimulation.

Cause severe hypotension and bradycardia. Small doses life-threatening for small pets.

Often contain xylitol for sweetening. Iron-containing add iron toxicity.

Causes severe hypotension and sedation. Very potent - small doses dangerous.

Cough syrups often contain dextromethorphan and/or xylitol. Both dangerous.

Imidazolines cause severe vasoconstriction, hypertension, and bradycardia. Tiny amounts dangerous.

Cause life-threatening hypoglycemia.

Very narrow therapeutic window. Overdose causes severe cardiac arrhythmias.

Permethrin flea treatments for dogs HIGHLY TOXIC to cats.

Ibuprofen is highly toxic to pets. Even one pill can cause serious kidney damage or stomach ulcers.

Insulin overdose causes severe hypoglycemia. Life-threatening emergency.

Iron toxicity causing liver damage and metabolic acidosis.

Cause severe GI corrosion and cellular toxicity. Can be fatal.

Narrow therapeutic index. Overdose causes severe neurological and renal toxicity.

Causes severe hypoglycemia and lactic acidosis. Especially dangerous in cats.

Very toxic especially to cats. Even small ingestions cause severe hypotension and heart failure.

More toxic to dogs than ibuprofen. Severe GI ulceration, kidney damage, neurological effects.

Cause severe sedation, respiratory depression. Can be fatal.

Stimulants causing hypertension, tachycardia, agitation, tremors, hyperthermia.

Decongestants cause severe stimulation - hyperactivity, tremors, seizures, tachycardia.

Vitamin D analogs cause severe hypercalcemia and kidney failure. Highly toxic in small amounts.

Severe sedation and incoordination.

Potent opioid. Causes severe respiratory depression and can be fatal in small pets.

Thyroid hormone overdose causes severe metabolic and cardiac symptoms.

Transdermal hormone creams absorbed through pet skin contact. Can cause bone marrow suppression and feminization.

Extremely toxic to cats - licking small amount can cause fatal kidney failure.

Vitamin D overdose causes dangerous hypercalcemia leading to kidney failure and soft tissue calcification.

Overdose causes dangerous calcium levels. Kidney failure.

Causes sedation, ataxia, and paradoxical excitation. Cats may become agitated.

May contain stimulants (caffeine, ephedra) causing cardiac and neurological toxicity.

SNRI causing serotonin syndrome: agitation, tremors, elevated HR. Cats especially sensitive.

Cause profound sedation and weakness. Baclofen especially dangerous: can cause coma.

Causes GI irritation and in large amounts zinc toxicity leading to hemolytic anemia.

Low-dose modern pills rarely acutely toxic. Mild GI upset possible.

Prescribed to pets for pain/anxiety. Overdose causes sedation and ataxia. Generally safe.

Prescribed to pets for heart/kidney disease. Overdose causes low BP but rarely life-threatening.

Sometimes prescribed for pets. Overdose causes GI upset. Generally safe.

Prescribed to pets. Overdose causes serotonin syndrome: agitation, tremors, elevated HR.

GI upset if licked. Some contain NSAIDs/steroids.

Small ingestion causes mild GI upset. Chronic ingestion can cause Cushingoid symptoms.

Prescribed to pets for pain. Overdose causes sedation, agitation, tremors, possible seizures.

Commonly prescribed to pets for anxiety/sedation. Overdose causes excessive sedation and ataxia.

Prescribed to pets for anxiety. Overdose causes profound sedation. Large doses: respiratory depression.