Caffeine Toxicity Calculator
Clinical judgment required. This calculator is a decision-support tool, not a substitute for veterinary consultation. For poisoning emergencies, call the ASPCA Animal Poison Control Center at 888-426-4435 or your nearest emergency veterinary hospital.
Caffeine Toxicity CalculatorCanineFeline
Calculate caffeine toxicity risk in dogs and cats. Estimates total caffeine dose in mg/kg based on product type and amount ingested. Covers brewed coffee, espresso, black tea, energy drinks (Red Bull, Monster), caffeine pills (NoDoz, Vivarin), and coffee beans. Caffeine is a methylxanthine that causes tachycardia, tremors, seizures, and cardiac arrhythmias in dogs and cats. Mild signs at 15 mg/kg, moderate toxicity (tremors, tachycardia) at 40 mg/kg, severe signs (seizures) above 60 mg/kg, and potentially lethal above 140 mg/kg. Used for toxicology triage, caffeine ingestion emergencies, and poison control assessment. Common queries: 'my dog drank coffee', 'dog ate caffeine pill', 'cat drank energy drink'.
oz / pills
Total Caffeine
—mg
Dose per Body Weight
—mg/kg
15 mg/kg
40 mg/kg
60 mg/kg
140 mg/kg
Mild
High
Lethal